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Arduino Nano RP2040 Connect

 

Does anyone know whether the Arduino Nano in the uBitx 6 could be replaced with an Arduino Nano RP2040 Connect without any other hardware changes? I realize the software would have to be adjusted, but are there any pin conflicts that can't be resolved in code?
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73,
Mark, N8ME
 

Looking at the pinout diagrams, I don't see any conflicts there. But watch out for the voltage; the Nano is usually operated at 5V, while the RP2040 is a 3V3 chip and its inputs are not 5V tolerant.


On Mon, Nov 14, 2022 at 9:49 PM Mark Erbaugh <mark.election@...> wrote:
Does anyone know whether the Arduino Nano in the uBitx 6 could be replaced with an Arduino Nano RP2040 Connect without any other hardware changes? I realize the software would have to be adjusted, but are there any pin conflicts that can't be resolved in code?
--
73,
Mark, N8ME

 

Yes, the software and voltage are the real issues. You might also worry about the pull-up voltage on the i2c bus.?


I have actually designed a Raduino board that could take nano,nano every, nano IoT, nano ble and the rp2040. See gitHub.com/aj6cu. ?I have a jumper for 5v vs 3.3 and another set for the Nextion display d8/d9 vs rx1/tx1.?

?


The main challenge is the software. The software serial library is a problem (the teeny serial provided by kd8cec doesn¡¯t compile and at least one of those platforms doesn¡¯t support the real software serial) so I moved the Nextion connection to hardware serial 1 with the required pin changes.?

Also the kd8cec uBITX memory manager doesn¡¯t work with the rp2060. So I am rewriting it¡­


73
Mark
AJ6CU

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This one has been tested in a v6 and it fits (best not to include the lcd socket).?




Have not tried to fit the one with the external i2c connection into a v6 so there could be mechanical issues.?


73
Mark
AJ6CU

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