We have an erle copter, which runs on a raspberry pi 3 with frambuesa image on it. I have connected to the wifi that it generates (erlerobotics-frambuesa) before, but suddenly it stopped working and I cannot see that wifi anymore. I did a fresh install of frambuesa but still the wifi just doesn't show up. Which is a big problem for us as deadlines are approaching for the project and we really, really need the wifi.
Can you please tell me what went wrong and how to fix it?