PropMag-2008-03
Title:
PropMag-2008-03
Author:
216.193.149.248
Published:
Mon, 30 Jun 2008 16:05:46 GMT
Prop Magazine - March 2008
Next issue
April 2008
The Prop Magazine, with many thanks to the work put in by Fred Hawkins.
http://forums.parallax.com/forums/default.aspx?f=25&m=256872
Shock News
DeSilva Tosses Towel (or takes Sabbatical)
http://forums.parallax.com/forums/default.aspx?f=25&m=256944
Sabbitical seems likely, see book below
Basics
bookmarked Propeller manual pdf, w/ google search tips, Ray's logic link
http://forums.parallax.com/forums/default.aspx?f=25&m=254507
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/forums/default.aspx?f=25&m=251102
book: DeSilva outlines his How to start Microcontrolling using the Parallax Propeller,
http://forums.parallax.com/forums/default.aspx?f=25&m=257218
cognew or coginit and kiss thoughts. (IE don't make stuff hard to do)
http://forums.parallax.com/forums/default.aspx?f=25&m=257791
clear thinking is possible -- kiss
http://forums.parallax.com/forums/default.aspx?f=25&m=255146
division, spin,
with tips for flogging integer math to do floating point work
http://forums.parallax.com/forums/default.aspx?f=25&m=258422
spin instruction timing
http://forums.parallax.com/forums/default.aspx?f=25&m=259389
variables between cogs
http://forums.parallax.com/forums/default.aspx?f=25&m=257464
Spin, global variables across cogs and objects: discussion.
http://forums.parallax.com/forums/default.aspx?f=25&m=254609
bit masking, in spin and assembly
http://forums.parallax.com/forums/default.aspx?f=25&m=256775
spin, bit masking. Code fragments included.
http://forums.parallax.com/forums/default.aspx?f=25&m=260279
controlling servos, using Beau's servo32v3.spin (in Prop Tool, starting with version 1.06).
http://forums.parallax.com/forums/default.aspx?f=25&m=255594
lots to chew on -- laptop serial to prop, robot fits where?
http://forums.parallax.com/forums/default.aspx?f=25&m=258177
prop plug and reset avoidance, w/ nested links to previous threads.
http://forums.parallax.com/forums/default.aspx?f=25&m=258255
mosquito's timer module
http://forums.parallax.com/forums/default.aspx?f=25&m=258441
Prop Demo board's tv clipping
http://forums.parallax.com/forums/default.aspx?f=25&m=259567
prop UI theory discussion
http://forums.parallax.com/forums/default.aspx?f=25&m=259991
Basics and Beyond
CommentedFullDuplexSerial.spin (grasshopper's collation of Mike Green's wisdom)
http://forums.parallax.com/forums/default.aspx?f=25&m=258162
Assembly: Sample code that uses a cog's $1f0-1ff special purpose registers as part of the program space.
http://forums.parallax.com/forums/default.aspx?f=25&m=256591
Assembly, ina is source only. Plus nice code minimalization discussion. (w/ examples)
http://forums.parallax.com/forums/default.aspx?f=25&m=258143
assembly, remember sign of cnt when comparing. (w/ code sample.)
http://forums.parallax.com/forums/default.aspx?f=25&m=260776
synchronizing cogs, program counter
http://forums.parallax.com/forums/default.aspx?f=25&m=257095
PropMonitor, PropTerminal links
http://forums.parallax.com/forums/default.aspx?f=25&m=257718
hyperterminal settings
http://forums.parallax.com/forums/default.aspx?f=25&m=259697
Spin, 1 second timers:
http://forums.parallax.com/forums/default.aspx?f=25&m=254589
event timestamping, spin
http://forums.parallax.com/forums/default.aspx?f=25&m=256874
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/forums/default.aspx?f=25&m=256547
spin and assembly, towards a micro-stepping controller program.
http://forums.parallax.com/forums/default.aspx?f=25&m=261026
more simple ADC in spin.
http://forums.parallax.com/forums/default.aspx?f=25&m=256645
bare bones adc links and Perry's vid capture code
http://forums.parallax.com/forums/default.aspx?f=25&m=260159
spin execution speed, profiling
http://forums.parallax.com/forums/default.aspx?f=25&m=256763
on FloatMath timing (a bit). & Stevenmess' remark on Float pdf error.
http://forums.parallax.com/forums/default.aspx?f=25&m=260417
towards closed loop controller (industrial)
http://forums.parallax.com/forums/default.aspx?f=25&m=257608
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/forums/default.aspx?f=25&m=256295
"Is my propeller dead?", troubleshooting gambits. Not mentioned, low 9v battery on ed kit
http://forums.parallax.com/forums/default.aspx?f=25&m=255083
spin, LOCKSET, LOCKNEW review
http://forums.parallax.com/forums/default.aspx?f=25&m=259235
spin, LOOKDOWN LOOKUP discussion
http://forums.parallax.com/forums/default.aspx?f=25&m=259987
spin, ascii string to integer conversions and, marginally, gps/rtc stuff.
http://forums.parallax.com/forums/default.aspx?f=25&m=258771
spin to assembly, advice
http://forums.parallax.com/forums/default.aspx?f=25&m=259580
spin niceties: i/o pin notation () versus subscript declaration []
http://forums.parallax.com/forums/default.aspx?f=25&m=260027
spin, writing long variables (remember: byte by byte transfer from @address)
http://forums.parallax.com/forums/default.aspx?f=25&m=260064
spin strings, function referencing (misleading metaphor) Links to workarounds
http://forums.parallax.com/forums/default.aspx?f=25&m=260504&p=1
Possible? guitar to midi conversion
http://forums.parallax.com/forums/default.aspx?f=25&m=260907
Sine wave generation
http://forums.parallax.com/forums/default.aspx?f=25&m=261056
PropDOS 1.6 released by Oldbitcollector
http://forums.parallax.com/forums/default.aspx?f=25&p=1&m=224206
and then a full text editor for PropDOS -- "Think of this as NOTEPAD"
http://forums.parallax.com/forums/default.aspx?f=25&m=255771
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/forums/default.aspx?f=25&m=242685
Oldbitcollector's PropBBS for Ethernet
http://forums.parallax.com/forums/default.aspx?f=25&m=257661
and now, FemtoBASIC in Color
http://forums.parallax.com/forums/default.aspx?f=25&m=231506
tvIRC client for propeller
http://forums.parallax.com/forums/default.aspx?f=25&m=258073
Games
Spinpong
http://forums.parallax.com/forums/default.aspx?f=25&m=256210
Hardware
Beau troubleshoots his 3axis H48C module's prop code
http://forums.parallax.com/forums/default.aspx?f=25&m=225297
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/forums/default.aspx?f=25&m=151211
position sensing, kicks around using a LVDT (Linear Variable Differential Transformer) to measure an physical movement.
http://forums.parallax.com/forums/default.aspx?f=25&m=255994
{ 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/forums/default.aspx?f=25&m=138059
towards implementing ADS8341 16 bit 4 channel A/D converter
http://forums.parallax.com/forums/default.aspx?f=25&m=257373
links to chinese caliper threads
http://forums.parallax.com/forums/default.aspx?f=25&m=255194
towards interfacing with vinculum vdrive 2 from FTDI to USB memory stick
http://forums.parallax.com/forums/default.aspx?f=25&m=257357
messing w/magnets (railguns and why one needs a blockhouse on range)
http://forums.parallax.com/forums/default.aspx?f=25&m=253606
on XBee modules, briefly. Link to Martin's site. Demo I/O programs added.
http://forums.parallax.com/forums/default.aspx?f=25&m=258257
Ping, briefly w/ links. Mike Green's ground plane discussion.
http://forums.parallax.com/forums/default.aspx?f=25&m=257936
managing ground traces
http://forums.parallax.com/forums/default.aspx?f=25&m=260436
Handy GPS search link for prop forum.
http://forums.parallax.com/forums/default.aspx?f=25&m=258918
tips for pulling protoboard prop chip
http://forums.parallax.com/forums/default.aspx?f=25&m=259005
shhh, let sleeping props lie: power down alternatives.
http://forums.parallax.com/forums/default.aspx?f=25&m=258976
about qfn chips. with Ti's qfn.pdf (nice!)
http://forums.parallax.com/forums/default.aspx?f=25&m=260015
technochip's Vinculum SPI, with spec sheet corrections.
http://forums.parallax.com/forums/default.aspx?f=25&m=260159
sinking 5v to the prop, discussion only no schematics.
http://forums.parallax.com/forums/default.aspx?f=25&m=259960
Ymodem: transfer files from prop's SD to a pc
http://forums.parallax.com/forums/default.aspx?f=25&m=260146
towards USB hosting. Nifty proposal: making a sniffer first.
http://forums.parallax.com/forums/default.aspx?f=25&m=260298
PCA9555 IO expander driver. W/link to deSilva's Small I2c Driver
http://forums.parallax.com/forums/default.aspx?f=25&m=260896
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/forums/default.aspx?f=25&m=260892
advice on making pcbs with cnc's, and alternatives. (w/ links.)
http://forums.parallax.com/forums/default.aspx?f=25&m=254578
Images & displays
text over camera image
http://forums.parallax.com/forums/default.aspx?f=25&m=259649
spudview: displays ppm images
http://forums.parallax.com/forums/default.aspx?f=25&m=259578
Tim's assembly graphics driver for µOLED-96-Prop (eeprom bin release). In Object Exchange.
http://forums.parallax.com/forums/default.aspx?f=25&m=258383
(Subtext: Beat this to win the contest.)
Resurgent threads
steppers in assembly. Alberto adds a driver.
http://forums.parallax.com/forums/default.aspx?f=25&m=241108
'Objects' module for PE Kit Labs -- hyperterminal alternative.
http://forums.parallax.com/forums/default.aspx?f=25&m=169419
new vid of Alberto's led curtain. (follow more-vids-from to see his mp3 player)
http://forums.parallax.com/forums/default.aspx?f=25&p=5&m=179824
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/forums/default.aspx?f=25&p=2&m=250812
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/forums/default.aspx?f=25&m=254117
notes on high speed sampling (25MHz), towards low rez vision. [no code, schematic, just theory]. sidebars: assembly 8x8 font routine (w/ bugs, more or less squashed), size & alignment issues
http://forums.parallax.com/forums/default.aspx?f=25&p=1&m=255764
Malloc memory manager, version 011.
http://forums.parallax.com/forums/default.aspx?f=25&m=256052
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/forums/default.aspx?f=25&m=256393
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/forums/default.aspx?f=25&m=255074
towards a prop mp3 player (or just an UI frontend -- that's doable)
http://forums.parallax.com/forums/default.aspx?f=25&m=259258
TV object color limitations
http://forums.parallax.com/forums/default.aspx?f=25&m=258584
Prop VGA IRC Client
http://forums.parallax.com/forums/default.aspx?f=25&m=260624
adjusting video refresh rates with crystals
http://forums.parallax.com/forums/default.aspx?f=25&m=260446
towards FFT, DFT implementation. Links to past work.
http://forums.parallax.com/forums/default.aspx?f=25&m=259917
networking props. Links back to transfer speeds, Phil's reverse LMM.
http://forums.parallax.com/forums/default.aspx?f=25&m=260226
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/forums/default.aspx?f=25&p=1&m=252691
programming advanced, towards developing an independent spin compiler. Some solid ground here too, with fundamental text links. Sourceforge details too.
http://forums.parallax.com/forums/default.aspx?f=25&p=1&m=253050
spawning eeproms for the prop
http://forums.parallax.com/forums/default.aspx?f=25&m=257265
under development, Ale's Large Memory Model assembler
http://forums.parallax.com/forums/default.aspx?f=25&m=233324
Esoterica
CP/M operating system on a prop. Still handy. (links to reference sites)
http://forums.parallax.com/forums/default.aspx?f=25&p=2&m=252784
JVM (Java Virtual Machine) for the prop. Long thread documenting its implementation. Latest entries have best/stable/working code.
http://forums.parallax.com/forums/default.aspx?f=25&p=001&m=244721
England, props, importers and VAT, egads!
http://forums.parallax.com/forums/default.aspx?f=25&m=260775
Schedule
Prop Graphics Workshop at ATEA (April 2 - 4)
http://forums.parallax.com/forums/default.aspx?f=25&m=233234
uOLED-96-Prop design contest (April 30)
http://forums.parallax.com/forums/default.aspx?f=25&m=248327
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/forums/default.aspx?f=25&m=252351
IRC Thursdays at 8pm to 10pm Eastern Australia (Canberra) time. (GMT+10?)
http://forums.parallax.com/forums/default.aspx?f=25&p=1&m=253060
Unofficial NE Prop Expo in Sandusky, Ohio (tentative Aug 22-23, 2008)
http://forums.parallax.com/forums/default.aspx?f=25&p=1&m=246525
Propeller Tool
Running multiple tools simultaneously now possible
http://forums.parallax.com/forums/default.aspx?f=25&m=255765
Propeller Tool 1.1 re-released. Near bulletproof prop programming.
http://forums.parallax.com/forums/default.aspx?f=25&m=244899
Prop Tool 1.1 problems
http://forums.parallax.com/forums/default.aspx?f=25&m=260734
http://forums.parallax.com/forums/default.aspx?f=25&m=260683
http://forums.parallax.com/forums/default.aspx?f=25&m=260801
linux flavored wine:
http://forums.parallax.com/forums/default.aspx?f=25&m=261123
DYI tales
automobile lcd (rca input) from ebay
http://forums.parallax.com/forums/default.aspx?f=25&m=249064
on Printed Circuit Boards, shops and tools (link to toner technique)
http://forums.parallax.com/forums/default.aspx?f=25&m=258070
Outside apps
character (cursor) bitmap encoder for Windows
http://forums.parallax.com/forums/default.aspx?f=25&m=257207
Luggable towtruck. Get one for your trunk today, because you never know
http://forums.parallax.com/forums/default.aspx?f=25&m=258479
STM32 Primer
http://forums.parallax.com/forums/default.aspx?f=25&m=259602
Projects
two player game console
http://forums.parallax.com/forums/default.aspx?f=25&p=1&m=251914
Alberto's homemade mp3 player. (using Vmusic2 chip) With code.
http://forums.parallax.com/forums/default.aspx?f=25&m=259540
Remote control props. With recursion sidebar discussion.
http://forums.parallax.com/forums/default.aspx?f=25&p=2&m=256003
Adverts
guitar effects pedal, Howler goes metal
http://forums.parallax.com/forums/default.aspx?f=25&m=252772
prop powered stickers
http://forums.parallax.com/forums/default.aspx?f=25&p=1&m=242622
PropGFX Lite DIP40 almost ready
http://forums.parallax.com/forums/default.aspx?f=25&p=1&m=248778
PropGFX: new modes
http://forums.parallax.com/forums/default.aspx?f=25&p=1&m=259544
almost here: ImageCraft C
http://forums.parallax.com/forums/default.aspx?f=25&p=1&m=254114
ImageCraft C alpha is here
http://forums.parallax.com/forums/default.aspx?f=25&m=260575