I'm wanting to make a simple stand alone device to record the mains voltage and store it to memory. I'd like to be able to record the voltage every minute and then be able to download the data at a later stage onto my PC. At this stage i don't need multiple readings and averaging over the minute etc. Just a simple instantaneous reading every 60s.
Any help on where to start? Thoughts on this?
I've only got the Arduino UNO, but I am happy to purchase some memory or even a GSM add-on to transmit the data if that would be easier. Thanks in advance.