"Hi Bill, Thanks for your suggestions. As soon as I get home, I'll surely try on low voltage power supply. The strange thing that I've haven't already figured out, is why input 1 and 2 had no problem at all! I know that the first 2…"

"Hi Bill, I really need some assistance. I've tested so far 4(!!) different red boards, but no one seemed to correctly parse the signal on input 3 and 4. I tested them using stock sparkfun self-test firmware and also with self-compiled test…"

"Hi bill! Thanks for your response. We were testing the board with the self-test firmware, so i think we should contact sparkfun for an exchange. Bye!"

"Hi Bill, We recently bought a UAV Dev Board from sparkfun, but we noticed that inputs 3 and 4 don't work... Even debugging the application resulted in associated variables equals to 0 (counted pwm pulse length). Inputs 1 and 2 instead are…"