led-sphere-wifi-control | ESP wifi controlled LED sphere allowing you to choose

Plenty of things can go wrong here, but if you are using an ESP8266 and this project, I've narrowed it down a bit for you. When you plug the Sphere in, if your on windows you should hear a new device has plugged in, or a new mount on linux. Once that happens, you have a limited amount of time to talk to it before it might be too busy to respond. I say might, as often you can just do the upload at anytime anyway. It's easiest if you unplug, plug in and then click upload and monitor. In the console window you will get indications on what has gone wrong. Common reasons are "Port is in use" (you need to close the serial monitor from a previous session), or no device found (its busy doing other things and got sick of waiting). You can awkwardly press the reset buttons on the esp, or you can uncomment this code in main.ccp. and upload and run it to have a fresh system ready to connect. I know, I know. This code has been written on the ESP8266. It's a sturdy chip with wifi and bluetooth, and plenty of pins for GPIO/Controlling things. It should be fairly quick to adapt to it's successor the ESP32, with some minor fudging in the notification delay amounts.