While that advice frequently is applicable it isn't always because:redhawk wrote:Cut the red wire inside your USB hub that would prevent backfeeding power into the Pi,
Get an I/O expansion board with an MCP23008, MCP23017 or PCF8574AP between you and the RPi GPIO pins. You can blow one of those chips to smithereens and it costs $1 (or £1) to replace it. They're the sort of chips used on the Quick2Wire, Gertboard, PiFace, etc.RandomPerson wrote:Wow. I will never use the GPIO pins ever. That is plain scary.