Photo of two custom PCBs joined in the centre. Each PCB has four small colour TFT displays arranged vertically in a line, one above the other. The overall effect is a 2x4 grid of small rectangular displays. Each display has some small magenta text on it.

Messing around driving up to eight small SPI displays from a Waveshare Zero format board.

It works. But it is getting a little warm :) Figuring out why is on the todo list!

diyelectromusic.com/2025/08/14/waveshare-zer...

#WaveshareZero #SPI #ST7735

Photo of a Waveshare ESP32S3 Zero independently driving two small SPI displays all plugged into two mini solderless breadboards and connected via jumper wires.

More multi-SPI display messing around. This time using Waveshare Zero format boards, finding a common way to drive them from a RP2040, ESP32S3 or ESP32C3.

I hadn't realised SPI on the ESP32S3 was so complex!

(or that finding some common physical pins across […]

[Original post on mastodon.social]

Photo of a stack comprising: Waveshare Zero format board, upside down at the bottom, plugged into a bespoke PCB in the middle with a Duppa small 24-RGB LED ring PCB on the top. There is a potentiometer poking through the centre of the Duppa board.

Photo of the same device, but this time in a cubic 3D printed case. There are 24 holes in a ring on the top for the LEDs and a black knob on the shaft of the potentiometer. A USB cable is plugged in on one side and a TRS socket can be seen slightly poking out another.

The designs are up for my single-knob, MIDI controller using a Duppa small RGB LED ring and in this case a Waveshare Zero RP2040 board.

diyelectromusic.com/2025/04/27/duppa-i2c-mid...

#MIDI #Duppa #SynthDIY #WaveshareZero