I'm trying to use the"Raspberry Pi Relay Board v1.0"in a little project of mine. I'm using a Raspberry Pi model 1 B running Raspbian GNU/Linux 8 (jessie). Whilst it was on the bench, i managed to set up and test all my peripherals successfully. However now I'm running it in it's installation, the Relay Board will disappear from the bus after a period of time (~1 hour) (Most of my testing was only over a shorter period of time).
Power cycle (reboot or unplug/replug) the board is visible to i2cdetect.
What I've tried:
Unplugging and reseated
Initially it was on a ribbon cable and now mounted directly on the Pi - no difference
What I've yet to try:
Different Power Supply (Current one is rated at 5v 10w/2A so should be up to it)