This pertains to the Firmata Integration for HA.
I flashed StandardFirmata to my Arduino Nano and it created an entity that gave me a reading of 670ish with my DHT22. I then realized that Standard Firmata is not compatible with digital sensors. It was great to have an entity (proof of concept) but it wasn't useful.
But Firmata Express claims to have implemented a fix, so I flashed the .ino file from the Firmata Express example folder. I added all the library dependencies for Firmata Express, and the sketch uploaded fine.
I changed the Firmata serial baud rate in my HA config to 115200, as indicated in the Firmata Express GitHub page. I am not getting any entities in HA. Am I missing something?