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Forum Index : Microcontroller and PC projects : Palm Pico - progress

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DigitalDreams
Regular Member

Joined: 03/05/2025
Location: United Kingdom
Posts: 62
Posted: 06:34pm 02 Feb 2026
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  matherp said  See this thread for the history.





Love this original black keyboard @matherp !, a possible alternative ? (even if I have to hack the case)
 
JulesO
Newbie

Joined: 08/09/2025
Location: France
Posts: 19
Posted: 07:12pm 02 Feb 2026
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  DigitalDreams said  
  matherp said  See this thread for the history.





Love this original black keyboard @matherp !, a possible alternative ? (even if I have to hack the case)


Indeed, this version looks really cool!

EDIT : I have my answers from the previous topic (about sound and code compatibility between picomite vga/palm pico). I missed this thread. The project is really cool.
Edited 2026-02-03 05:15 by JulesO
 
DaveC5
Newbie

Joined: 24/09/2025
Location: United Kingdom
Posts: 40
Posted: 07:32am 25 Apr 2026
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I'm tinkering with an idea using this circuit and have a question for @matherp. Looking at the v1.4 schematic, specifically the two sets of pins used on the keyboard header (6 + 10), which set are used as outputs for the keyboard matrix and which are inputs?

I appreciate this might be an out-of-date version of the Palm Pico schematic, but at this point I'm at the sanity-check stage.

Dave
 
matherp
Guru

Joined: 11/12/2012
Location: United Kingdom
Posts: 11247
Posted: 07:45am 25 Apr 2026
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Here is the latest circuit diagram supported by OPTION RESET PALM PICO
Keyboard outputs are GP31-GP40, Inputs GP26-GP30, i.e. 10x5 matrix

PalmPico.pdf

Keyboard.pdf
Edited 2026-04-25 17:48 by matherp
 
DaveC5
Newbie

Joined: 24/09/2025
Location: United Kingdom
Posts: 40
Posted: 07:48am 25 Apr 2026
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  matherp said  Here is the latest circuit diagram supported by OPTION RESET PALM PICO
Keyboard outputs are GP31-GP40, Inputs GP26-GP30, i.e. 10x5 matrix

PalmPico.pdf


Lovely, thanks!
 
matherp
Guru

Joined: 11/12/2012
Location: United Kingdom
Posts: 11247
Posted: 07:49am 25 Apr 2026
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I added the keyboard diagram for reference
 
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