Are you working in a static-safe environment? It sounds to me like you are building up a static charge on your body (nylon clothing or carpets?) and discharging it into static-sensitive electronics. Nope, I am not, and I think I shouldn't, because I am deploying 70 instances in the same environment...

[quote="davidcoton"]What was the other end of your hanging wire connected to? It initially happened when I wanted to connect a USB powered LCD screen to the Pi, but now that I am testing different scenarios, it happens even when the other end of the wire is not connected to anything. My guess is tha...

power supplies for the PI are normally of the double isolated type, and GND of the PI is NEVER connected to mains, (except perhaps via the HDMI cable) it could be your "mains ground" actually contains a large voltage contrary to EARTH, and that large voltage ends up on the PI. I actually had the pr...

Hi Everyone, I am using B+ Raspberry Pis for my master's thesis to build 70 devices and deploy them across campus. For the project, I have designed my own custom circuit and I have ordered test PCBs. The RPi is connected to my circuit through the 40pin connector (~20cm ribbon cable). I am supplying ...