A convenient way to display your entity state from Home Assistant on a beautiful VFD.
This project uses an ESP32C3 to drive a CU40026MCPB-S35A VFD over serial.
Edit config.rs to set the appropriate Wi-Fi and Home Assistant API settings as well as to set up the entities that you want to display.
GPIO 4 is used for serial TX.
If you want to control the luminance of the display from Home Assistant you can create a helper entity of type Number with the minimum value of 0 and the maximum value of 255 and set its entity ID in the config.
There is some space on the back of the display where you can use hot glue to attach an ESP32C3 Super Mini as shown below.
