ESP32C3-Bluetooth-Example

I got some of the very cute XAIO ESP32C3 micro-controllers that support Bluetooth LE. I went looking for a code example. I found one in C++ and one in Python, but the Python one was obsolete and didn't work. So here is a simple example in Python that implements a URT device. Connect to it with a Bluetooth terminal and it will echo back what you send it. Nothing fancy but it will get something working for you.