I figured this out and got a simple test working. Got there through more research, posting on reddit, and lots of trial and error. It also really helped to have the nRF Connect app for testing the bulb and to find the UUIDs. Posting here in case it can help someone in the future. // Write to Playbul...

I'm new to BLE on ESP32 and am trying to do something simple. Basically, I have an RGB bulb that uses BLE and I want to control it by writing a value to a characteristic. This is dead simple using gatttool on Linux. Once connected, it's just something like 'char-write-cmd 0x0016 00FF0000' where 0x00...