[Swlug] oddball microcontrollers

[Rhys Sage]

At the moment I'm playing with some oddball microcontrollers, The current trio are the Sumolink Erhu which is a Raspberry Pi clone, a Wis-Pi RP2040 which is a miniaturised Pi Pico and an ESP32-C3 SuperMini.

So far I've put the firmware on the WisPi and the Erhu. The ESP-32 isn't wanting to play. I'll work more on that.

As for the WisPi, that's just plain weird. It's full of I2C and Uart connections. I did my usual thing of connecting three LEDs to each of three GPIO pins with the other leg of each going to a common rail that went to a 1K resistor and then to GND. 

When I went through it with my traffic-light test program which worked on my real pi Pico, it made the red and green LEDs flash but the middle LED wouldn't light up. The pin assignments were correct. Interestingly, unplugging the red or green LED made the other function. Curiously power was not fully cut to the other two LEDs. There was enough residual power to make them light up quite a bit. 

I can see why people would want  to stick with mainstream microcontrollers such as the standard Arduino and Raspberry stuff but I want to play with new and different toys. 

Has anybody else here tried those microcontrollers? I picked them up off Temu last month.

Rhys Sage