I have a project up and running that uses ESPNOW to allow multiple data gathering units to send telemetry, wirelessly, to a logging board that takes in everything and writes it to an SD card for later analysis. For the moment, I've hard-coded the MAC address of the gatherer into the code for the sen...

I have - or rather, had - the SerialToSerialBT example sketch working until my phone quit connecting to it. My eventual application won't require a phone or computer anyway, so I might as well go straight to solving the problem in hand: I need to have 3 boards talking to each other. One will be logg...

I got the SerialToSerialBT demo working - briefly. My android phone now connects to the device then immediately disconnects. No bother - using a phone or computer isn't my long-term intent, anyway. I need to get three boards talking to each other. One would be the primary and will be pulling data fr...