Prop Magazine, March 2008
Fred Hawkins
Posts: 997
Careful readers may recall that I have been pushing for a magazine that summarizes the more interesting of this forum's threads.
What I mean by "magazine" is a link and text thumbnail guide back to the threads. Think of it as a windy (and current) version of Graham's Good Thread Index.
I tipped into a more active mode this morning after I read the CPM thread.
The most recent comeback on a magazine was to put it on wiki, but I am reluctant to force yet another url on people. If someone else wants to do that be my guest but I, for one, am not interested in contributing or frankly reading a wiki.
I did take·a look at the size of the "problem" this morning. Since Jan 1, there are about 750 active threads. That's a lot of material to commit to memory even if one strips it down to the best of the best. Having three messages that do that -- January, February and here, March -- would be much simpler than scanning those 8 pages of 100 topic titles.
Using google search lets us find particular topics but it's not useful for organizing the state of the art.
So here's my proposal.
This start message will be edited by me to summarize this month's threads based upon both my reading of the forum and replies to this message. Importantly: If you feel that a thread is worthwhile ("aha!" or "Works for me!") please add·a reply message and I will add it to the magazine.
Fred
ps: reminder to the commercially-minded. Notice the 'advertising' possibilities. Just don't promote something that has been introduced a couple months back and has no material change since.
Prop Magazine
March 2008
DeSilva Tosses Towel (or takes Sabbatical) http://forums.parallax.com/showthread.php?p=715250
·Sabbitical seems likely, see book below
.
___________________________
basics,
·.
bookmarked Propeller manual pdf, w/ google search tips, Ray's logic link
·http://forums.parallax.com/showthread.php?p=712856
.
external web pages: "Building blocks"
Useful information for new propeller users.
Simple audio interface boards get a mention with two pictures.
http://forums.parallax.com/showthread.php?p=709508
.
book: DeSilva outlines his How to start Microcontrolling using the Parallax Propeller,
http://forums.parallax.com/showthread.php?p=715521
.
cognew or coginit and kiss thoughts. (IE don't make stuff hard to do)
http://forums.parallax.com/showthread.php?p=716082
.clear thinking is possible -- kiss
http://forums.parallax.com/showthread.php?p=713485
.
division, spin,
with tips for flogging integer math to do floating point work
http://forums.parallax.com/showthread.php?p=716696
.
spin instruction timing
http://forums.parallax.com/showthread.php?p=717647
.
variables between cogs
http://forums.parallax.com/showthread.php?p=715763
.
Spin, global variables across cogs and objects: discussion.
http://forums.parallax.com/showthread.php?p=712958
.
bit masking, in spin and assembly
http://forums.parallax.com/showthread.php?p=715083
.
spin, bit masking. Code fragments included.
http://forums.parallax.com/showthread.php?p=718523
.
controlling servos, using Beau's servo32v3.spin (in Prop Tool, starting with version 1.06).
http://forums.parallax.com/showthread.php?p=713922
.
lots to chew on -- laptop serial to prop, robot fits where?
http://forums.parallax.com/showthread.php?p=716456
.
prop plug and reset avoidance, w/ nested links to previous threads.
http://forums.parallax.com/showthread.php?p=716533
.
mosquito's timer module
http://forums.parallax.com/showthread.php?p=716715
.
Prop Demo board's tv clipping
http://forums.parallax.com/showthread.php?p=717821
.
prop UI theory discussion
http://forums.parallax.com/showthread.php?p=718238
.
________________
basics and beyond,
.
CommentedFullDuplexSerial.spin (grasshopper's collation of Mike Green's wisdom)
http://forums.parallax.com/showthread.php?p=716441
.
Assembly: Sample code that uses a cog's $1f0-1ff special purpose registers as part of the program space.·
http://forums.parallax.com/showthread.php?p=714901
.
Assembly,·ina is source only. Plus nice code minimalization discussion. (w/ examples)
http://forums.parallax.com/showthread.php?p=716424
.
assembly, remember sign of cnt when comparing. (w/ code sample.)
http://forums.parallax.com/showthread.php?p=719011
.
synchronizing cogs, program counter
http://forums.parallax.com/showthread.php?p=715400
.
PropMonitor, PropTerminal links
http://forums.parallax.com/showthread.php?p=716012
.
hyperterminal settings
http://forums.parallax.com/showthread.php?p=717949
.
Spin, 1 second timers:
http://forums.parallax.com/showthread.php?p=712938
.
event timestamping,· spin
http://forums.parallax.com/showthread.php?p=715181
.
simple ADC, link to rayman's web page with program zip, schematic and resistor calculator applet.
sending serial data· (to Pololu Micro Dual Serial Motor Controller)·
http://forums.parallax.com/showthread.php?p=714861
.
spin and assembly, towards a micro-stepping controller program.
http://forums.parallax.com/showthread.php?p=719259
.
more simple ADC in spin.
http://forums.parallax.com/showthread.php?p=714954
.
bare bones adc links and Perry's vid capture code
http://forums.parallax.com/showthread.php?p=718404
.
spin execution speed, profiling
http://forums.parallax.com/showthread.php?p=715071
.
on FloatMath timing (a bit). & Stevenmess' remark on Float pdf error.
http://forums.parallax.com/showthread.php?p=718658
.
towards closed loop controller (industrial)
http://forums.parallax.com/showthread.php?p=715907
.
Spin syntax, OR's in Cases: Peter's Ladder Logic thread (below) spun out of this thread
where Ron suggests the CASE construct is much like PLC's.
http://forums.parallax.com/showthread.php?p=714616
.
"Is my propeller dead?", troubleshooting gambits. Not mentioned, low 9v battery on ed kit
http://forums.parallax.com/showthread.php?p=713426
.
spin, LOCKSET, LOCKNEW review
http://forums.parallax.com/showthread.php?p=717497
.
spin, LOOKDOWN LOOKUP discussion
http://forums.parallax.com/showthread.php?p=718234
.
spin, ascii string to integer conversions and, marginally, gps/rtc stuff.
http://forums.parallax.com/showthread.php?p=717042
.
spin to assembly, advice
http://forums.parallax.com/showthread.php?p=717834
.
spin niceties:· i/o pin notation () versus subscript declaration [noparse]/noparse
http://forums.parallax.com/showthread.php?p=718274
.
spin, writing long variables (remember: byte by byte transfer from @address)
http://forums.parallax.com/showthread.php?p=718310
.
spin strings,· function referencing (misleading metaphor) Links to workarounds
http://forums.parallax.com/showthread.php?p=718743
.
Possible? guitar to midi conversion
http://forums.parallax.com/showthread.php?p=719141
.
Sine wave generation
http://forums.parallax.com/showthread.php?p=719289
.
_______________________________________________
.
PropDOS 1.6 released by Oldbitcollector
http://forums.parallax.com/showthread.php?p=683157
.
and then a full text editor for PropDOS -- "Think of this as NOTEPAD"
http://forums.parallax.com/showthread.php?p=714097
.
Mirror releases current code for Gear
This is the current Gear thread including the stimulus plug-in. Also links backward to the original version.
http://forums.parallax.com/showthread.php?p=701256
.
Oldbitcollector's PropBBS for Ethernet
http://forums.parallax.com/showthread.php?p=715958
.
and now, FemtoBASIC in Color
http://forums.parallax.com/showthread.php?p=690283
.
tvIRC client for propeller
http://forums.parallax.com/showthread.php?p=716355
.
______________________________________________________
games,
.
Spinpong
http://forums.parallax.com/showthread.php?p=714531
.
_______________________________________________
hardware,
.
Beau troubleshoots his 3axis H48C module's prop code
http://forums.parallax.com/showthread.php?p=684219
.
a different 3axis sensor: LIS3LV02DQ test program by JoMo
(nice chip, no external adc needed, runs on 2v to 3.6v, qfn package though)
http://forums.parallax.com/showthread.php?p=611856
.
position sensing,
kicks around using a LVDT (Linear Variable Differential Transformer) to measure an physical movement.
http://forums.parallax.com/showthread.php?p=714320
{ LVDT: http://en.wikipedia.org/wiki/Linear_variable_differential_transformer }
Also Beau points back to his July 31 2006 post for a homemade LVDT joystick, an overlooked wonder. Good stuff.
http://forums.parallax.com/showthread.php?p=598919
.
towards implementing ADS8341 16 bit 4 channel A/D converter
http://forums.parallax.com/showthread.php?p=715673
.
links to chinese caliper threads
http://forums.parallax.com/showthread.php?p=713533
.
towards interfacing with vinculum vdrive 2 from FTDI to USB memory stick
http://forums.parallax.com/showthread.php?p=715658
.
messing w/magnets (railguns and why one needs a blockhouse on range)
http://forums.parallax.com/showthread.php?p=711966
.
on XBee modules, briefly. Link to Martin's site. Demo I/O programs added.
http://forums.parallax.com/showthread.php?p=716535
.
Ping, briefly w/ links. Mike Green's ground plane discussion.
http://forums.parallax.com/showthread.php?p=716219
.
managing ground traces
http://forums.parallax.com/showthread.php?p=718677
.
Handy GPS search link for prop forum.
http://forums.parallax.com/showthread.php?p=717183
.
tips for pulling protoboard prop chip
http://forums.parallax.com/showthread.php?p=717270
.
shhh, let sleeping props lie: power down alternatives.
http://forums.parallax.com/showthread.php?p=717241
.
about qfn chips. with Ti's qfn.pdf (nice!)
http://forums.parallax.com/showthread.php?p=718262
.
technochip's Vinculum SPI, with spec sheet corrections.
http://forums.parallax.com/showthread.php?p=718404
.
sinking 5v to the prop, discussion only no schematics.
http://forums.parallax.com/showthread.php?p=718207
.
Ymodem: transfer files from prop's SD to a pc
http://forums.parallax.com/showthread.php?p=718391
.
towards USB hosting. Nifty proposal: making a sniffer first.
http://forums.parallax.com/showthread.php?p=718542
.
PCA9555 IO expander driver. W/link to deSilva's Small I2c Driver
http://forums.parallax.com/showthread.php?p=719130
.
FTDI ComPort to Propeller: 2M baud, 3M still theoretical. (w/ link to FTDI app notes)
No code yet, but one can hope.· Exploits on Stephen's blog: http://propcandev.blogspot.com/
Discursive prose about probs and props, yes! (de-obscurify: probs ~ problems)
http://forums.parallax.com/showthread.php?p=719126
.
advice on making pcbs with cnc's, and alternatives. (w/ links.)
http://forums.parallax.com/showthread.php?p=712927
.
_________________________________________
images & displays,
.
text over camera image
http://forums.parallax.com/showthread.php?p=717902
.
spudview: displays ppm images
http://forums.parallax.com/showthread.php?p=717832
.
Tim's assembly graphics driver for µOLED-96-Prop (eeprom bin release)
In Object Exchange.
http://forums.parallax.com/showthread.php?p=716659
(Subtext: Beat this to win the contest.)
.
___________________________________________________
resurgent threads,
.
steppers in assembly. Alberto adds a driver.
http://forums.parallax.com/showthread.php?p=699712
.
'Objects' module for PE Kit Labs -- hyperterminal alternative.
http://forums.parallax.com/showthread.php?p=629665
.
new vid of Alberto's led curtain. (follow more-vids-from to see his mp3 player)
http://forums.parallax.com/showthread.php?p=639825
___________________________________________________
advanced,
.
cogstop, coginit and cognew considerations. (Use cogstop....or not; nor CASE)
and finally, add a wait so that a new stack settles down.
http://forums.parallax.com/showthread.php?p=709225
.
assembly, towards programs bigger than cog memory.
A rudimentary introduction to this topic but has links to LMM and prior threads
http://forums.parallax.com/showthread.php?p=712474
.
notes on high speed sampling (25MHz), towards low rez vision. [noparse][[/noparse]no code, schematic, just theory]
sidebars: assembly 8x8 font routine (w/ bugs, more or less squashed), size· & alignment issues
http://forums.parallax.com/showthread.php?p=714090
.
Malloc memory manager, version 011.
http://forums.parallax.com/showthread.php?p=714377
.
advanced skinny branches, Forth: Peter Jakacki offers up a droll implementation of Ladder Logic
http://en.wikipedia.org/wiki/Ladder_logic
used typically by Programmable Logic Controllers (PLC's)
http://en.wikipedia.org/wiki/Programmable_logic_controller
The discussion delves into the how-to but not so much the why-do-it.
http://forums.parallax.com/showthread.php?p=714712
.
high frequency synthesis, with link back to a 2006 thread· with Chip's teaser about
a quickie microphone to fm transmitter (no specifics alas, shall we pester him?)
http://forums.parallax.com/showthread.php?p=713417
.
towards a prop mp3 player (or just an UI frontend -- that's doable)
http://forums.parallax.com/showthread.php?p=717520
.
TV object color limitations
http://forums.parallax.com/showthread.php?p=716855
.
Prop VGA IRC Client
http://forums.parallax.com/showthread.php?p=718862
.
adjusting video refresh rates with crystals
http://forums.parallax.com/showthread.php?p=718687
.
towards FFT, DFT implementation. Links to past work.
http://forums.parallax.com/showthread.php?p=718164
.
networking props. Links back to transfer speeds, Phil's reverse LMM.
http://forums.parallax.com/showthread.php?p=718470
.
_____________________________________________________
fundamentalists,
.
Skinning the onion -- any further and you're scraping hardware.
Chip Gracey releases ROM source code. Booter, spin interpreter and runner.
http://forums.parallax.com/showthread.php?p=711064
.
programming advanced, towards developing an independent spin compiler
Some solid ground here too, with fundamental text links. Sourceforge details too.
http://forums.parallax.com/showthread.php?p=711419
.
spawning eeproms for the prop
http://forums.parallax.com/showthread.php?p=715568
.
under development, Ale's Large Memory Model assembler
http://forums.parallax.com/showthread.php?p=692062
.
______________________________________________________
esoterica,
.
CP/M operating system on a prop. Still handy. (links to reference sites)
http://forums.parallax.com/showthread.php?p=711157
.
JVM (Java Virtual Machine) for the prop. Long thread documenting
its implementation. Latest entries have best/stable/working code.
http://forums.parallax.com/showthread.php?p=703261
.
England, props, importers and VAT, egads!
http://forums.parallax.com/showthread.php?p=719010
.
______________________
schedule,
.
Prop Graphics Workshop at ATEA (April 2 - 4)
http://forums.parallax.com/showthread.php?p=691974
.
µOLED-96-Prop design contest (April 30)
http://forums.parallax.com/showthread.php?p=706801
.
2008 Prop design contest (September 1, 2008)
http://www.parallax.com/Default.aspx?tabid=603
.
IRC Saturdays at 17:00 gmt
http://forums.parallax.com/showthread.php?p=710731
.
IRC Thursdays at 8pm to 10pm Eastern Australia (Canberra) time. (GMT+10?)
http://forums.parallax.com/showthread.php?p=711429
.
Unofficial NE Prop Expo in Sandusky, Ohio (tentative Aug 22-23, 2008)
http://forums.parallax.com/showthread.php?p=705027
.
_____________________
Propeller Tool,
.
Running multiple tools simultaneously now possible
http://forums.parallax.com/showthread.php?p=714091
.
Propeller Tool 1.1 re-released. Near bulletproof prop programming.
http://forums.parallax.com/showthread.php?p=703436
.
Prop Tool 1.1 problems
http://forums.parallax.com/showthread.php?p=718969
http://forums.parallax.com/showthread.php?p=718918
http://forums.parallax.com/showthread.php?p=719035
linux flavored wine: http://forums.parallax.com/showthread.php?p=719355
.
_____________________
DYI tales,
.
automobile lcd (rca input) from ebay
http://forums.parallax.com/showthread.php?p=707532
.
on Printed Circuit Boards, shops and tools (link to toner technique)
http://forums.parallax.com/showthread.php?p=716352
.
_____________________
outside apps,
.
character (cursor) bitmap encoder for Windows
http://forums.parallax.com/showthread.php?p=715511
.
Luggable towtruck. Get one for your trunk today, because you never know
http://forums.parallax.com/showthread.php?p=716752
.
STM32 Primer
http://forums.parallax.com/showthread.php?p=717856
_____________________
projects,
.
two player game console
http://forums.parallax.com/showthread.php?p=710310
.
Alberto's homemade mp3 player. (using Vmusic2 chip) With code.
http://forums.parallax.com/showthread.php?p=717795
.
Remote control props. With recursion sidebar discussion.
http://forums.parallax.com/showthread.php?p=714329
_____________________________
adverts,
.
guitar effects pedal, Howler goes metal
http://forums.parallax.com/showthread.php?p=711145
.
prop powered stickers
http://forums.parallax.com/showthread.php?p=701193
.
·PropGFX Lite DIP40 almost ready
http://forums.parallax.com/showthread.php?p=707247
.
PropGFX: new modes
http://forums.parallax.com/showthread.php?p=717799
.
almost here: ImageCraft C
http://forums.parallax.com/showthread.php?p=712471
.
ImageCraft C alpha is here
http://forums.parallax.com/showthread.php?p=718814
.
Post Edited (Fred Hawkins) : 4/1/2008 9:57:05 PM GMT
What I mean by "magazine" is a link and text thumbnail guide back to the threads. Think of it as a windy (and current) version of Graham's Good Thread Index.
I tipped into a more active mode this morning after I read the CPM thread.
The most recent comeback on a magazine was to put it on wiki, but I am reluctant to force yet another url on people. If someone else wants to do that be my guest but I, for one, am not interested in contributing or frankly reading a wiki.
I did take·a look at the size of the "problem" this morning. Since Jan 1, there are about 750 active threads. That's a lot of material to commit to memory even if one strips it down to the best of the best. Having three messages that do that -- January, February and here, March -- would be much simpler than scanning those 8 pages of 100 topic titles.
Using google search lets us find particular topics but it's not useful for organizing the state of the art.
So here's my proposal.
This start message will be edited by me to summarize this month's threads based upon both my reading of the forum and replies to this message. Importantly: If you feel that a thread is worthwhile ("aha!" or "Works for me!") please add·a reply message and I will add it to the magazine.
Fred
ps: reminder to the commercially-minded. Notice the 'advertising' possibilities. Just don't promote something that has been introduced a couple months back and has no material change since.
Prop Magazine
March 2008
DeSilva Tosses Towel (or takes Sabbatical) http://forums.parallax.com/showthread.php?p=715250
·Sabbitical seems likely, see book below
.
___________________________
basics,
·.
bookmarked Propeller manual pdf, w/ google search tips, Ray's logic link
·http://forums.parallax.com/showthread.php?p=712856
.
external web pages: "Building blocks"
Useful information for new propeller users.
Simple audio interface boards get a mention with two pictures.
http://forums.parallax.com/showthread.php?p=709508
.
book: DeSilva outlines his How to start Microcontrolling using the Parallax Propeller,
http://forums.parallax.com/showthread.php?p=715521
.
cognew or coginit and kiss thoughts. (IE don't make stuff hard to do)
http://forums.parallax.com/showthread.php?p=716082
.clear thinking is possible -- kiss
http://forums.parallax.com/showthread.php?p=713485
.
division, spin,
with tips for flogging integer math to do floating point work
http://forums.parallax.com/showthread.php?p=716696
.
spin instruction timing
http://forums.parallax.com/showthread.php?p=717647
.
variables between cogs
http://forums.parallax.com/showthread.php?p=715763
.
Spin, global variables across cogs and objects: discussion.
http://forums.parallax.com/showthread.php?p=712958
.
bit masking, in spin and assembly
http://forums.parallax.com/showthread.php?p=715083
.
spin, bit masking. Code fragments included.
http://forums.parallax.com/showthread.php?p=718523
.
controlling servos, using Beau's servo32v3.spin (in Prop Tool, starting with version 1.06).
http://forums.parallax.com/showthread.php?p=713922
.
lots to chew on -- laptop serial to prop, robot fits where?
http://forums.parallax.com/showthread.php?p=716456
.
prop plug and reset avoidance, w/ nested links to previous threads.
http://forums.parallax.com/showthread.php?p=716533
.
mosquito's timer module
http://forums.parallax.com/showthread.php?p=716715
.
Prop Demo board's tv clipping
http://forums.parallax.com/showthread.php?p=717821
.
prop UI theory discussion
http://forums.parallax.com/showthread.php?p=718238
.
________________
basics and beyond,
.
CommentedFullDuplexSerial.spin (grasshopper's collation of Mike Green's wisdom)
http://forums.parallax.com/showthread.php?p=716441
.
Assembly: Sample code that uses a cog's $1f0-1ff special purpose registers as part of the program space.·
http://forums.parallax.com/showthread.php?p=714901
.
Assembly,·ina is source only. Plus nice code minimalization discussion. (w/ examples)
http://forums.parallax.com/showthread.php?p=716424
.
assembly, remember sign of cnt when comparing. (w/ code sample.)
http://forums.parallax.com/showthread.php?p=719011
.
synchronizing cogs, program counter
http://forums.parallax.com/showthread.php?p=715400
.
PropMonitor, PropTerminal links
http://forums.parallax.com/showthread.php?p=716012
.
hyperterminal settings
http://forums.parallax.com/showthread.php?p=717949
.
Spin, 1 second timers:
http://forums.parallax.com/showthread.php?p=712938
.
event timestamping,· spin
http://forums.parallax.com/showthread.php?p=715181
.
simple ADC, link to rayman's web page with program zip, schematic and resistor calculator applet.
sending serial data· (to Pololu Micro Dual Serial Motor Controller)·
http://forums.parallax.com/showthread.php?p=714861
.
spin and assembly, towards a micro-stepping controller program.
http://forums.parallax.com/showthread.php?p=719259
.
more simple ADC in spin.
http://forums.parallax.com/showthread.php?p=714954
.
bare bones adc links and Perry's vid capture code
http://forums.parallax.com/showthread.php?p=718404
.
spin execution speed, profiling
http://forums.parallax.com/showthread.php?p=715071
.
on FloatMath timing (a bit). & Stevenmess' remark on Float pdf error.
http://forums.parallax.com/showthread.php?p=718658
.
towards closed loop controller (industrial)
http://forums.parallax.com/showthread.php?p=715907
.
Spin syntax, OR's in Cases: Peter's Ladder Logic thread (below) spun out of this thread
where Ron suggests the CASE construct is much like PLC's.
http://forums.parallax.com/showthread.php?p=714616
.
"Is my propeller dead?", troubleshooting gambits. Not mentioned, low 9v battery on ed kit
http://forums.parallax.com/showthread.php?p=713426
.
spin, LOCKSET, LOCKNEW review
http://forums.parallax.com/showthread.php?p=717497
.
spin, LOOKDOWN LOOKUP discussion
http://forums.parallax.com/showthread.php?p=718234
.
spin, ascii string to integer conversions and, marginally, gps/rtc stuff.
http://forums.parallax.com/showthread.php?p=717042
.
spin to assembly, advice
http://forums.parallax.com/showthread.php?p=717834
.
spin niceties:· i/o pin notation () versus subscript declaration [noparse]/noparse
http://forums.parallax.com/showthread.php?p=718274
.
spin, writing long variables (remember: byte by byte transfer from @address)
http://forums.parallax.com/showthread.php?p=718310
.
spin strings,· function referencing (misleading metaphor) Links to workarounds
http://forums.parallax.com/showthread.php?p=718743
.
Possible? guitar to midi conversion
http://forums.parallax.com/showthread.php?p=719141
.
Sine wave generation
http://forums.parallax.com/showthread.php?p=719289
.
_______________________________________________
.
PropDOS 1.6 released by Oldbitcollector
http://forums.parallax.com/showthread.php?p=683157
.
and then a full text editor for PropDOS -- "Think of this as NOTEPAD"
http://forums.parallax.com/showthread.php?p=714097
.
Mirror releases current code for Gear
This is the current Gear thread including the stimulus plug-in. Also links backward to the original version.
http://forums.parallax.com/showthread.php?p=701256
.
Oldbitcollector's PropBBS for Ethernet
http://forums.parallax.com/showthread.php?p=715958
.
and now, FemtoBASIC in Color
http://forums.parallax.com/showthread.php?p=690283
.
tvIRC client for propeller
http://forums.parallax.com/showthread.php?p=716355
.
______________________________________________________
games,
.
Spinpong
http://forums.parallax.com/showthread.php?p=714531
.
_______________________________________________
hardware,
.
Beau troubleshoots his 3axis H48C module's prop code
http://forums.parallax.com/showthread.php?p=684219
.
a different 3axis sensor: LIS3LV02DQ test program by JoMo
(nice chip, no external adc needed, runs on 2v to 3.6v, qfn package though)
http://forums.parallax.com/showthread.php?p=611856
.
position sensing,
kicks around using a LVDT (Linear Variable Differential Transformer) to measure an physical movement.
http://forums.parallax.com/showthread.php?p=714320
{ LVDT: http://en.wikipedia.org/wiki/Linear_variable_differential_transformer }
Also Beau points back to his July 31 2006 post for a homemade LVDT joystick, an overlooked wonder. Good stuff.
http://forums.parallax.com/showthread.php?p=598919
.
towards implementing ADS8341 16 bit 4 channel A/D converter
http://forums.parallax.com/showthread.php?p=715673
.
links to chinese caliper threads
http://forums.parallax.com/showthread.php?p=713533
.
towards interfacing with vinculum vdrive 2 from FTDI to USB memory stick
http://forums.parallax.com/showthread.php?p=715658
.
messing w/magnets (railguns and why one needs a blockhouse on range)
http://forums.parallax.com/showthread.php?p=711966
.
on XBee modules, briefly. Link to Martin's site. Demo I/O programs added.
http://forums.parallax.com/showthread.php?p=716535
.
Ping, briefly w/ links. Mike Green's ground plane discussion.
http://forums.parallax.com/showthread.php?p=716219
.
managing ground traces
http://forums.parallax.com/showthread.php?p=718677
.
Handy GPS search link for prop forum.
http://forums.parallax.com/showthread.php?p=717183
.
tips for pulling protoboard prop chip
http://forums.parallax.com/showthread.php?p=717270
.
shhh, let sleeping props lie: power down alternatives.
http://forums.parallax.com/showthread.php?p=717241
.
about qfn chips. with Ti's qfn.pdf (nice!)
http://forums.parallax.com/showthread.php?p=718262
.
technochip's Vinculum SPI, with spec sheet corrections.
http://forums.parallax.com/showthread.php?p=718404
.
sinking 5v to the prop, discussion only no schematics.
http://forums.parallax.com/showthread.php?p=718207
.
Ymodem: transfer files from prop's SD to a pc
http://forums.parallax.com/showthread.php?p=718391
.
towards USB hosting. Nifty proposal: making a sniffer first.
http://forums.parallax.com/showthread.php?p=718542
.
PCA9555 IO expander driver. W/link to deSilva's Small I2c Driver
http://forums.parallax.com/showthread.php?p=719130
.
FTDI ComPort to Propeller: 2M baud, 3M still theoretical. (w/ link to FTDI app notes)
No code yet, but one can hope.· Exploits on Stephen's blog: http://propcandev.blogspot.com/
Discursive prose about probs and props, yes! (de-obscurify: probs ~ problems)
http://forums.parallax.com/showthread.php?p=719126
.
advice on making pcbs with cnc's, and alternatives. (w/ links.)
http://forums.parallax.com/showthread.php?p=712927
.
_________________________________________
images & displays,
.
text over camera image
http://forums.parallax.com/showthread.php?p=717902
.
spudview: displays ppm images
http://forums.parallax.com/showthread.php?p=717832
.
Tim's assembly graphics driver for µOLED-96-Prop (eeprom bin release)
In Object Exchange.
http://forums.parallax.com/showthread.php?p=716659
(Subtext: Beat this to win the contest.)
.
___________________________________________________
resurgent threads,
.
steppers in assembly. Alberto adds a driver.
http://forums.parallax.com/showthread.php?p=699712
.
'Objects' module for PE Kit Labs -- hyperterminal alternative.
http://forums.parallax.com/showthread.php?p=629665
.
new vid of Alberto's led curtain. (follow more-vids-from to see his mp3 player)
http://forums.parallax.com/showthread.php?p=639825
___________________________________________________
advanced,
.
cogstop, coginit and cognew considerations. (Use cogstop....or not; nor CASE)
and finally, add a wait so that a new stack settles down.
http://forums.parallax.com/showthread.php?p=709225
.
assembly, towards programs bigger than cog memory.
A rudimentary introduction to this topic but has links to LMM and prior threads
http://forums.parallax.com/showthread.php?p=712474
.
notes on high speed sampling (25MHz), towards low rez vision. [noparse][[/noparse]no code, schematic, just theory]
sidebars: assembly 8x8 font routine (w/ bugs, more or less squashed), size· & alignment issues
http://forums.parallax.com/showthread.php?p=714090
.
Malloc memory manager, version 011.
http://forums.parallax.com/showthread.php?p=714377
.
advanced skinny branches, Forth: Peter Jakacki offers up a droll implementation of Ladder Logic
http://en.wikipedia.org/wiki/Ladder_logic
used typically by Programmable Logic Controllers (PLC's)
http://en.wikipedia.org/wiki/Programmable_logic_controller
The discussion delves into the how-to but not so much the why-do-it.
http://forums.parallax.com/showthread.php?p=714712
.
high frequency synthesis, with link back to a 2006 thread· with Chip's teaser about
a quickie microphone to fm transmitter (no specifics alas, shall we pester him?)
http://forums.parallax.com/showthread.php?p=713417
.
towards a prop mp3 player (or just an UI frontend -- that's doable)
http://forums.parallax.com/showthread.php?p=717520
.
TV object color limitations
http://forums.parallax.com/showthread.php?p=716855
.
Prop VGA IRC Client
http://forums.parallax.com/showthread.php?p=718862
.
adjusting video refresh rates with crystals
http://forums.parallax.com/showthread.php?p=718687
.
towards FFT, DFT implementation. Links to past work.
http://forums.parallax.com/showthread.php?p=718164
.
networking props. Links back to transfer speeds, Phil's reverse LMM.
http://forums.parallax.com/showthread.php?p=718470
.
_____________________________________________________
fundamentalists,
.
Skinning the onion -- any further and you're scraping hardware.
Chip Gracey releases ROM source code. Booter, spin interpreter and runner.
http://forums.parallax.com/showthread.php?p=711064
.
programming advanced, towards developing an independent spin compiler
Some solid ground here too, with fundamental text links. Sourceforge details too.
http://forums.parallax.com/showthread.php?p=711419
.
spawning eeproms for the prop
http://forums.parallax.com/showthread.php?p=715568
.
under development, Ale's Large Memory Model assembler
http://forums.parallax.com/showthread.php?p=692062
.
______________________________________________________
esoterica,
.
CP/M operating system on a prop. Still handy. (links to reference sites)
http://forums.parallax.com/showthread.php?p=711157
.
JVM (Java Virtual Machine) for the prop. Long thread documenting
its implementation. Latest entries have best/stable/working code.
http://forums.parallax.com/showthread.php?p=703261
.
England, props, importers and VAT, egads!
http://forums.parallax.com/showthread.php?p=719010
.
______________________
schedule,
.
Prop Graphics Workshop at ATEA (April 2 - 4)
http://forums.parallax.com/showthread.php?p=691974
.
µOLED-96-Prop design contest (April 30)
http://forums.parallax.com/showthread.php?p=706801
.
2008 Prop design contest (September 1, 2008)
http://www.parallax.com/Default.aspx?tabid=603
.
IRC Saturdays at 17:00 gmt
http://forums.parallax.com/showthread.php?p=710731
.
IRC Thursdays at 8pm to 10pm Eastern Australia (Canberra) time. (GMT+10?)
http://forums.parallax.com/showthread.php?p=711429
.
Unofficial NE Prop Expo in Sandusky, Ohio (tentative Aug 22-23, 2008)
http://forums.parallax.com/showthread.php?p=705027
.
_____________________
Propeller Tool,
.
Running multiple tools simultaneously now possible
http://forums.parallax.com/showthread.php?p=714091
.
Propeller Tool 1.1 re-released. Near bulletproof prop programming.
http://forums.parallax.com/showthread.php?p=703436
.
Prop Tool 1.1 problems
http://forums.parallax.com/showthread.php?p=718969
http://forums.parallax.com/showthread.php?p=718918
http://forums.parallax.com/showthread.php?p=719035
linux flavored wine: http://forums.parallax.com/showthread.php?p=719355
.
_____________________
DYI tales,
.
automobile lcd (rca input) from ebay
http://forums.parallax.com/showthread.php?p=707532
.
on Printed Circuit Boards, shops and tools (link to toner technique)
http://forums.parallax.com/showthread.php?p=716352
.
_____________________
outside apps,
.
character (cursor) bitmap encoder for Windows
http://forums.parallax.com/showthread.php?p=715511
.
Luggable towtruck. Get one for your trunk today, because you never know
http://forums.parallax.com/showthread.php?p=716752
.
STM32 Primer
http://forums.parallax.com/showthread.php?p=717856
_____________________
projects,
.
two player game console
http://forums.parallax.com/showthread.php?p=710310
.
Alberto's homemade mp3 player. (using Vmusic2 chip) With code.
http://forums.parallax.com/showthread.php?p=717795
.
Remote control props. With recursion sidebar discussion.
http://forums.parallax.com/showthread.php?p=714329
_____________________________
adverts,
.
guitar effects pedal, Howler goes metal
http://forums.parallax.com/showthread.php?p=711145
.
prop powered stickers
http://forums.parallax.com/showthread.php?p=701193
.
·PropGFX Lite DIP40 almost ready
http://forums.parallax.com/showthread.php?p=707247
.
PropGFX: new modes
http://forums.parallax.com/showthread.php?p=717799
.
almost here: ImageCraft C
http://forums.parallax.com/showthread.php?p=712471
.
ImageCraft C alpha is here
http://forums.parallax.com/showthread.php?p=718814
.
Post Edited (Fred Hawkins) : 4/1/2008 9:57:05 PM GMT
Comments
I think that is a great idea !
With so many threads to go Thu, it would be hard to organize them in small groups or chapters with more post's added daily.
I was thinking about your idea. It's a great one and one I think many readers will benefit from, so I'm going to throw this idea at you.
Maybe, you can pick a topic of the week, let's say and we (the readers) can review that one. Changing the topic every week or whenever you would like.
For the newbies it would be something new to learn and for the die hard prop users is would be a great review or refresher.
Maybe spawning new idea's ? or just finally working on that project I haven't gone around to getting at.
Just a thought and my two cents worth.
This month, how about?:
Servo control motion with the Prop.
How to move servos with the Parallax Propeller.
Rob 7
Post Edited (Rob7) : 3/12/2008 2:38:53 PM GMT
And if you spot one that ought to be mentioned, just reply here with its link and some prose that let's people know what's being promoted.
F
propeller.splendora.com/
This *cannot* be a permanent home for this project, but we can play around a bit for now. Feel free to make a login and post links / comments.
Stuff that works:
1) Front page - mashup of all content.
2) Link exchange - List of links in a monthly format. Links are tagged and tags are searchable I believe.
3) Blogs and blog posts with comments.
Stuff that could be improved:
1) The look of it. I'm no designer [noparse]:)[/noparse] But I do know how to theme Drupal very well so if someone helps with the design I can implement it.
2) Entering links could be simplified.
3) It could have a tag cloud and possibly other ways to navigate tagged content.
So let me know if anyone's interested in continuing with this! I'll donate what I have so far and help it to grow if someone provides a nice permanent home for it!
▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
Join us in the Un-Official Propeller IRC channel: irc.freenode.net #propeller
Newbies, oldies, programmers, math professors, and everyone in-between welcome!
Propeller IRC howto
spinc - open source Spin compiler
Post Edited (dfletch) : 3/13/2008 3:34:15 AM GMT
▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
JMH
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www.madlabs.info - Home of the Hydrogen Fuel Cell Robot
Essentially all that will be interesting about each "issue" will be the first message with the links and summaries.
So reading them serially should be easy.
The process breaks down, sort of, when no one suggests any threads to be added. (Then an issue is as good as it's editor).
However, there's no time limit on when a thread can be added to the magazine.
Notice that·anyone can be·the editor by starting the "Prop Magazine, [noparse][[/noparse]month year]" message.
Btw, can someone explain how to get an image embedded in a message as opposed to merely adding an attachment?
Post Edited (Fred Hawkins) : 3/13/2008 2:16:29 PM GMT
Oh well seems Fred is not interested. It's on the back burner until someone resurrects it with some interest :P
▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
Join us in the Un-Official Propeller IRC channel: irc.freenode.net #propeller
Newbies, oldies, programmers, math professors, and everyone in-between welcome!
Propeller IRC howto
spinc - open source Spin compiler
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New to the Propeller?
Getting started with the Protoboard? - Propeller Cookbook 1.4
Updates to the Cookbook are now posted to: Propeller.warrantyvoid.us
Got an SD card? - PropDOS
A Living Propeller FAQ - The Propeller Wiki
(Got the Knowledge? Got a Moment? Add something today!)
Just knocked this one out as proof of concept. It's another URL, but very easy to read, post, etc.. The advantage is news over time archives. I'm happy to toss it, or add others to it for posting, etc...
Was gonna do it earlier, and the thread bump triggered it now.
propellertimes.blogspot.com/
Edit: Nice work Fred! I like it too. Didn't want to / mean to trump that. [noparse]:)[/noparse]
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Propeller Wiki: Share the coolness!
Chat in real time with other Propellerheads on IRC #propeller @ freenode.net
Post Edited (potatohead) : 3/17/2008 8:25:36 PM GMT
I actually think it is something Parallax might consider, some sort of news letter emailed out once a month, could contain new products etc as well.
Graham
▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
Propeller Wiki: Share the coolness!
Chat in real time with other Propellerheads on IRC #propeller @ freenode.net
Har! You should like it, I lifted the idea totally from your insider magazine.
Fred
PropGFX updates, Howler (Hardware projects)
LCARS, TVirc (Software projects)
"Easy 5v Interface" (useful chip that Rayman came up with)
@Fred, if you continue this, I plan to take a PDF snapshot at the
end of the month and post it to a accessible location.
(A sample of what I have in mind is attached.)
Awesome work! After seeing this, it's becoming obvious why
it's so easy to loose information in this forum--March being a
typical month theres a *LOT* going on with Propeller.
BTW: Has anyone noticed the message stats compared to
BASIC stamp recently? Incredible.
OBC
▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
New to the Propeller?
Getting started with the Protoboard? - Propeller Cookbook 1.4
Updates to the Cookbook are now posted to: Propeller.warrantyvoid.us
Got an SD card? - PropDOS
A Living Propeller FAQ - The Propeller Wiki
(Got the Knowledge? Got a Moment? Add something today!)
If you like, I can send you my text file at month's end.
Fred
I will probably will break out the assembly, spin, and prop innards into separate sub categories within the basic, b and beyond, advanced headings.
Plus add a category for programming with solder.
Depending upon whether it makes sense (enough material to warrant the bother) I may add a section labeled objects.
On length -- once this magazine is done, I will go back and use formatting to make it a faster scan. That should help, as long as the formatting is spare.
On why blogs and wiki's are not a good alternative -- for the sake of·incremental updates, categorization is made much harder. ·
If anyone wants to try their hand at being April's editor, just start a thread named 'Prop Magazine, April 2008' and I will relax for a month.
Post Edited (Fred Hawkins) : 4/1/2008 10:02:33 PM GMT
Having said that completeness is good but can anyone really keep this up?
Graham
The issue does sprawl a bit, but I was interested in providing each level of reader -- noobie, can swim with the fishes, and the big fishes -- something to read. The beginner threads will always look more or less the same, but out on the skinny branches the forum does make progress. Compilers, anyone?
Maybe six months from now, it'll be enough of a memory jog to make March's threads come back to life.
Making this magazine was pretty simple. I just used Notepad to maintain a text file and alt-tab to add a line and link as I kept up with the Forum. Really, anyone could 'edit' an 'issue'.
Formerly I used my browser to bookmark interesting threads. That resulted in a two huge folders called "Propeller" that I hardly can bear to look in.
On keep this up, maybe. After lurking on the Forum for eight months, I found that my grasp of topics was turning to mush. Making this magazine refocused my attention on what I was reading. So, I find making an issue useful, to me. Would anyone else be interested in publicly sharing their 'grasp'? I don't know.
Fred
ps, care to edit my txt file? That could work too.