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Forum Index : Microcontroller and PC projects : Spotpear RP2350A-Linux-Pro Board

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fred777
Senior Member

Joined: 01/07/2021
Location: United Kingdom
Posts: 103
Posted: 02:03pm 09 Oct 2026
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Hi all,
i have just received this nice little RP2350A board from China (alixexpress) called "Spotpear RP2350A-Linux-Pro Board" for 11GBP (so under 15USD).





First impressions are very positive, it has the "normal" Pico formactor but adds a SDCard slot and 8MB PSRAM.
Seems to run fine @384Mhz




> option list
PicoMite MMBasic RP2350A V7.0.00b6
OPTION FLASH SIZE 16777216
OPTION COLOURCODE ON
OPTION CASE UPPER
OPTION PICO OFF
OPTION CPUSPEED (KHz) 384000
OPTION DISPLAY 36, 100
OPTION SDCARD GP21, GP22, GP23, GP20
OPTION COMPILE ON
OPTION PSRAM PIN GP19

> list pins
GP0      1      OFF
GP1      2      OFF
GP2      4      OFF
GP3      5      OFF
GP4      6      OFF
GP5      7      OFF
GP6      9      OFF
GP7      10     OFF
GP8      11     OFF
GP9      12     OFF
GP10     14     OFF
GP11     15     OFF
GP12     16     OFF
GP13     17     OFF
GP14     19     OFF
GP15     20     OFF
GP16     21     OFF
GP17     22     OFF
GP18     24     OFF
GP19     25     Boot Reserved : PSRAM CS
GP20     26     Boot Reserved : SD MISO
GP21     27     Boot Reserved : SD CS
GP22     29     Boot Reserved : SD CLK
GP23     41     Boot Reserved : SD MOSI
GP24     42     OFF
GP25     43     HEARTBEAT
GP26     31     OFF
GP27     32     OFF
GP28     34     OFF
GP29     44     OFF

docs and schematics are here: docs

I have only tested the "basic" version of mmbasic, no hdmi/vga/usb testing done yet.
Will do some more testing but I really like this board so far.
 
Volhout

Guru

Joined: 05/03/2018
Location: Netherlands
Posts: 6168
Posted: 02:11pm 09 Oct 2026
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Cannot use HDMI. You need access to GP19 (HDMI connects to GP12...19).
And GP19 is used for PSRAM.

Volhout
Edited 2026-10-10 00:11 by Volhout
PicomiteVGA PETSCII ROBOTS
 
matherp
Guru

Joined: 11/12/2012
Location: United Kingdom
Posts: 11974
Posted: 02:14pm 09 Oct 2026
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Won't work for HDMI without removing the psram and won't work for VGA with standard pins so you can't plug it into the sc board for example. Otherwise really nice, perfect for a data-logger etc. Good find!
 
Mixtel90

Guru

Joined: 05/10/2019
Location: United Kingdom
Posts: 9173
Posted: 03:55pm 09 Oct 2026
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Nice board. Unfortunate choice of pin for PSRAM select though. :(  Perhaps a mod might be possible to change it to GP0.
Mick

Zilog Inside! nascom.info for Nascom & Gemini
 
fred777
Senior Member

Joined: 01/07/2021
Location: United Kingdom
Posts: 103
Posted: 12:15pm 10 Oct 2026
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Bodge done, PSRAM CS is now on GP0. A bit ugly but I'm happy with it  
Will add some glue to keep the bodge wire fixed. And I kept GP12-19 free for a HDMI adapter.



Edited 2026-10-10 22:16 by fred777
 
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