About 20 years ago when my state (Wisconsin) held a contest for a slogan to put on our license plates, we got a bunch of the usual "Vacationland" and "America's Dairyland", but some wag suggested "Famous Potatoes".
Re. the "IPad" name, why can't you use it? Seems like everyone else does.
Are you planning to populate the board with all the headers? if so, and I hate to bring this up, but the clearance between a MoBo daughtercard and the host board is only 5/16". A standard 100-mil header will be too tall to fit underneath. You can view the dimension requirements here:
The daughterboard size is 1.35" x 1.35" and extends to the end of the MB (left and right). (There is a 0.05" gap between DBs when two are installed on a MB.) Any external interface will be on the end opposite the the 12-pin header. If you were to include mounting holes for the standoffs, the two opposite the header would suffice. The two that straddle the header are unnecessary.
thanks for the image. Do I have the pins correctly labeled on the image?
Are there many boards that use both headers? It would be dificult to get both onto this board.
As for populating. i plan to sell this as kit. You can easily solder the headers you need. I will for sure rotate the header though to allow it to fit better.
The daughterboards use just one header apiece. Attached below is a better drawing that also shows the connector pinout. Typically, the top edge (in the drawing) of the board will be flush with an edge of the host board. That way, if it's put in a housing, any protruding connectors can fit through openings in the housing.
A0-A7 is the preferred bank for pin assignments. Some daughterboards may also expect the A0 and A1 pins to have ADC capability. But neither is a hard and fast requirement. At the very least, a contiguous bank of eight pins on an eight-pin boundary, in the order indicated will work for most daughterboards. The four msb pins (e.g. A4-A7, A12-A15, etc.) should be pulled up to Vdd with 4.7K resistors. The schematic for the Propeller Backpack in this document is a good reference.
Thanks,
-Phil
Post Edited (Phil Pilgrim (PhiPi)) : 1/31/2010 1:07:44 AM GMT
I am a little confused. I thought the mobo standard included rx,tx,scl,sda + 4 io pins. I chose the top 8 since that would give you 8 consecutive pins where the bottom would not.
Ok I get it now. Page 19 makes it very clear. I will shift the backlight on the LCD from A to B and put the MOBO on A using B for ADC as shown in the schematic.
This way both an LCD and Mobo can be used. or Digital mobo and spin b-d
Anyone needing ADC and/or pull ups on the MOBO will need to solder some 0603 components on.
mctrivia said...
I thought the mobo standard included rx,tx,scl,sda + 4 io pins.
No. That was only for David Carrier's web dev board. Since it had only four unused pins (A24-A27), it made sense to add A28-A31 to the header, since they fell into sequence and worked well grouped like that. You could do it that way if you want (or if you didn't want to connect pullups to another group of four pins). It just limits the function of the four highest pins and precludes the use of some daughterboards. For example, a daughterboard that provides a VGA connector would use all eight pins and would not be able to share pins with SDA, SCL, TX, and RX. Any of A0-A7, A8-A15, A16-A23, or A24-A31 will work; but A0-A7 is preferred, with A4-A7 pulled up to Vdd via 4.7K.
ok I now have 4 0603 pull ups optional. They can not be installed at the same time as the protoboard A adapter though. I also added 4 V3.3 pads betweeb spin studio A and spin studio B so through hole resisters could be used as pull ups to the Prop Platform Header.
LCD and Mobo take up the same space and both can not be populated together. I used the same anchor points for the LCD and Mobo also to save another large hole.
You can use both at the same time if you solder the LCD to the bottom side.
I did not update the mask but LCD is B,C,D now. I will be adding an I2C ADC IC also. the normal circuit will not work do to trace lengths.
That is a great drawing of the MoBo daughter board specifications. I was looking for something like this the other day when Phil mentioned the MoBo header in the Prop Web Server thread. Perhaps this drawing can be posted official on the Parallax MoBo page? Also, I would recommend adding a part number for the possible headers to use on a MoBo design.
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Timothy D. Swieter, E.I. www.brilldea.com - Prop Blade, LED Painter, RGB LEDs, 3.0" LCD Composite video display, eProto for SunSPOT www.tdswieter.com
"Shizfits" (from shiznit= "that is the s**t, isn't it" to shizfits: "that fits all kinds of s**t doesn't it")
Graham
p.s. I preferred it when "famous potatoes" was just surreal [noparse]:([/noparse] In the same way I thought the phrase "if the cat fits wear it" was hilarious until I realised my mistake [noparse]:)[/noparse]
Post Edited (Graham Stabler) : 2/1/2010 12:29:31 AM GMT
sure it could be. I just think there are lots of better options.
Keep the names coming. The prize has just gotten better. Now you will get the adapter board and a proppeller platform also. Thanks Nick McClick for the extra prize.
Comments
Spinboard
FreeProp
UnSpun
ReSpun
SPINit
Propellerized
Plug 'n' Prop
PropMAX
XProp
PropX
PROPer Connections (
Propeller Universal Adapter Board
Ok, I'm all through now.
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Computers are microcontrolled.
Robots are microcontrolled.
I am microcontrolled.
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Post Edited (microcontrolled) : 1/29/2010 7:02:07 PM GMT
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I have made a name summery in the first post. Boy are there a lot. sylvie369 I don't get yours "Famous Potatoes"
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24 bit LCD Breakout Board now in. $24.99 has backlight driver and touch sensitive decoder.
If you have not already. Add yourself to the prophead map
Propular connectors
thing-a-ma-jig
Not-a-shield
Lobbyboard
OBC
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Computers are microcontrolled.
Robots are microcontrolled.
I am microcontrolled.
SX Spinning light display·
http://designedbymemicros.blogspot.com/
http://www.platesusa.com/Merchant2/merchant.mvc?Screen=PROD&Product_Code=ID01&Category_Code=I2I
About 20 years ago when my state (Wisconsin) held a contest for a slogan to put on our license plates, we got a bunch of the usual "Vacationland" and "America's Dairyland", but some wag suggested "Famous Potatoes".
Re. the "IPad" name, why can't you use it? Seems like everyone else does.
Prop Multi Access
PMB
Prop Multilangual Board
Had one for PMS but didn't want to go there.
Jim
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Arguing with myself--sometimes me, myself, and I don't always agree.
(Former) Caterpillar product support technician
Jonathan
P.S. alternate name for The Tick fans: "Propazog, from dimension 13-B" [noparse][[/noparse]8^)
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lonesock
Piranha are people too.
My favorite plane, other than the XB-70.
Jim
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Signature space for rent!
Send $1 to CannibalRobotics.com.
Babelprop - wjsteele
Babelfish - localroger
PropBridge - OakGraphics
Propeller Extender Board - Cheyenne
Propeller Universal Adapter Board - microcontrolled
PropFormer - MagIO2
RosettaProp - Shmoopy
TheBorg - Bill Henning
Transmogrifier - BradC
UHURU(Swahili for freedom) - WBA Consulting
VersaBoard - blittled
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24 bit LCD Breakout Board now in. $24.99 has backlight driver and touch sensitive decoder.
If you have not already. Add yourself to the prophead map
▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
24 bit LCD Breakout Board now in. $24.99 has backlight driver and touch sensitive decoder.
If you have not already. Add yourself to the prophead map
Are you planning to populate the board with all the headers? if so, and I hate to bring this up, but the clearance between a MoBo daughtercard and the host board is only 5/16". A standard 100-mil header will be too tall to fit underneath. You can view the dimension requirements here:
www.parallax.com/Portals/0/Downloads/docs/prod/boards/MoboStamp-pe_dim.pdf.
The daughterboard size is 1.35" x 1.35" and extends to the end of the MB (left and right). (There is a 0.05" gap between DBs when two are installed on a MB.) Any external interface will be on the end opposite the the 12-pin header. If you were to include mounting holes for the standoffs, the two opposite the header would suffice. The two that straddle the header are unnecessary.
-Phil
(Just because.)
Are there many boards that use both headers? It would be dificult to get both onto this board.
As for populating. i plan to sell this as kit. You can easily solder the headers you need. I will for sure rotate the header though to allow it to fit better.
▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
24 bit LCD Breakout Board now in. $24.99 has backlight driver and touch sensitive decoder.
If you have not already. Add yourself to the prophead map
The daughterboards use just one header apiece. Attached below is a better drawing that also shows the connector pinout. Typically, the top edge (in the drawing) of the board will be flush with an edge of the host board. That way, if it's put in a housing, any protruding connectors can fit through openings in the housing.
A0-A7 is the preferred bank for pin assignments. Some daughterboards may also expect the A0 and A1 pins to have ADC capability. But neither is a hard and fast requirement. At the very least, a contiguous bank of eight pins on an eight-pin boundary, in the order indicated will work for most daughterboards. The four msb pins (e.g. A4-A7, A12-A15, etc.) should be pulled up to Vdd with 4.7K resistors. The schematic for the Propeller Backpack in this document is a good reference.
Thanks,
-Phil
Post Edited (Phil Pilgrim (PhiPi)) : 1/31/2010 1:07:44 AM GMT
▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
24 bit LCD Breakout Board now in. $24.99 has backlight driver and touch sensitive decoder.
If you have not already. Add yourself to the prophead map
This way both an LCD and Mobo can be used. or Digital mobo and spin b-d
Anyone needing ADC and/or pull ups on the MOBO will need to solder some 0603 components on.
▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
24 bit LCD Breakout Board now in. $24.99 has backlight driver and touch sensitive decoder.
If you have not already. Add yourself to the prophead map
-Phil
LCD and Mobo take up the same space and both can not be populated together. I used the same anchor points for the LCD and Mobo also to save another large hole.
You can use both at the same time if you solder the LCD to the bottom side.
I did not update the mask but LCD is B,C,D now. I will be adding an I2C ADC IC also. the normal circuit will not work do to trace lengths.
▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
24 bit LCD Breakout Board now in. $24.99 has backlight driver and touch sensitive decoder.
If you have not already. Add yourself to the prophead map
▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
Timothy D. Swieter, E.I.
www.brilldea.com - Prop Blade, LED Painter, RGB LEDs, 3.0" LCD Composite video display, eProto for SunSPOT
www.tdswieter.com
-Phil
mezzanine dream
OSFA : "one size fits all"
COTB: "Chairman of the boards"
"The ambassador"
"The diplomat"
"Shizfits" (from shiznit= "that is the s**t, isn't it" to shizfits: "that fits all kinds of s**t doesn't it")
Graham
p.s. I preferred it when "famous potatoes" was just surreal [noparse]:([/noparse] In the same way I thought the phrase "if the cat fits wear it" was hilarious until I realised my mistake [noparse]:)[/noparse]
Post Edited (Graham Stabler) : 2/1/2010 12:29:31 AM GMT
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Style and grace : Nil point
Keep the names coming. The prize has just gotten better. Now you will get the adapter board and a proppeller platform also. Thanks Nick McClick for the extra prize.
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24 bit LCD Breakout Board now in. $24.99 has backlight driver and touch sensitive decoder.
If you have not already. Add yourself to the prophead map
The original, from the latin: "Entities should not be multiplied unnecessarily."
Most popular modern form: "If you have two equally likely solutions to a problem, choose the simplest."
The funniest (sounds like Yogi Berra): "Everything should be made as simple as possible, but not simpler."
Duffer
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Any technology, sufficiently developed, is indistinguishable from magic.· A.C. Clark(RIP)
RE A.Clark Did you read that directly from his writtings, or from YELLO ?
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Style and grace : Nil point