I have completed a project involving an Arduino Wifi rev2 connected to several sensors. The Arduino is powered on a 12V battery (in a boat) using a step down converter to 9.2V connected between the 12V battery and the 9V battery power input on the board. The Arduino connects to a local wifi network every 1.5 hours to send the sensor output readings to my webserver.
All worked fine for a couple of weeks ago, when it suddenly stopped sending data. When I push the reset button, one cycle of the program works fine, but then it stops again.
I have not changed the code since the time it all worked, the local wifi network has not changed (otherwise even the first cycle would probably not work either...).
In other words, I have no idea what could go wrong, and any input would be highly welcome. To be honest:I have nog yet been able to debug this situation using the monitor. That will be done tomorrow...