I was playing around with the project at http://openenergymonitor.org
I created the circuits (with larger capacitors 50uF) detailed on this page for the current transformer and the wall wart: http://openenergymonitor.org/emon/node/59
I am attached to A3, A4, 5v, and gnd.
Everything appeared to be ok (other than some values appeared as negative), but then I removed the USB from the arduino (which was it’s power source) and it stayed on. I then removed the +5V line from the arduino and it still stayed on. Then I removed the ground (I may have plugged the 5v line in, not sure) and the on LED dimmed, but still stayed on.
I am not sure what the impact of these actions is, but it appears I bricked my Arduino and unfortnuately it is an Uno which probably means the whole thing is toast.
- 0n LED is lit
- “Loop-Back Test” is successful
- not appear to be running the program
- attempting to upload a sketch results in “avrdude: stk500_recv(): programmer is not responding.”
Now it is time for the autopsy and understanding what happened as to prevent it from happening again. I am guessing the current transformer, but more probably the 9VAC wall wart kept powering the ardino. Maybe I fried it when I removed the ground or the 5v and the positive had to flow through the analog pin. Possibly just when
Can anyone provide confirmation, other hypothesizes, or better yet a fix?