I have a wireless project so I have two arduino pro minis as a receiver and transmitter. both are powered the same through an AMS1117 5V regulator which is good to 1A going to VCC directly (not vcc raw)
I use the FTDI programmer. one of the arduinos works perfect. The other only works when the programmer is connected. With or without power going to VCC it works fine.
I am testing wow with the blink program.
When I unplug the FTDI programmer, or rather don't have it connected, the LED blinks rapidly (the one on pin 1). It doesn't matter what sketch I upload it does this same thing when powered by VCC only.
For the messed up one, I can upload sketches etc just fine as long as the programmer is connected.
I understand there is an issue here on my part but what does this strange behavior mean? Just stumped because I would think if there is a short it wouldn't work with the programmer installed.