Recently we had a work ‘Hackday’ – my project was to wire up pulsed electricity meters in my building and put together a simple foyer energy display based on an Arduino reading the pulses. I’m nearly there (I think) thought I’d share some of the highlights!
Plan of attack was roughly:
1)Investigate meters, check they have pulsed outputs (passed)
2)get some wire – 100M drum of 8 core white security cable seems to do the job just fine, I also bought some potting boxes, quite useful as I accidentally cut the cable in once place and it needed to be jointed!
3)Code for the arduino – write a little utility to read pulses and put out a signal on the serial port to indicate which meter pulsed. At the moment this is just a straight serial output, but I might change it to use Firmata
4)Code for the screen – haven’t done this bit yet!
So far it’s been fun!