Flash Wio Node to ESPHome or Tasmota
Wio Nodes are tiny wireless controller boards built by Seeed Studio as part of the Grove system which supports hundreds of hardware widgets and sensors . The nodes were designed to be configured with the Wio app and linked through a Wio server. It's unclear if the Seeed Studio Wio service is just down temporarily or entirely deprecated, but the Wio server displayed an error while trying to setup some old Wio Nodes I had sitting in a box. I assumed these nifty little boards were rendered useless by service deprecation, and none of my favorite open source firmwares mentioned support for the "ESP-WROOM-02" chip on the board. It wasn't until a few days ago when I learned that "ESP-WROOM-02" is not the chip but an assembly, which uses the popular ESP8266 chip at its core. Now the question was not if but how can I flash it? Seeed Studio's Github repo didn't include flashing instructions but did include the board schematics which held the key to flas