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Whole House Energy Monitor – Part 2

Testing the first batch of WHEM boards, I discovered a mistake in one of the traces. Out came the rotary tool, and I ground out two trace connections, and soldered in 2 jumpers. This will be corrected on the REV 2 boards. Two tools I would not be without are my WEN Rotary Tool and my Board Holder.

The parts call out is:

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R1 – 100k Ohm
R2, R3, R4, R6, R7, R9, R10 – 10k Ohm
R5, R8 – 44.2 Ohm
C1, C2, C3 – 10uf 16v

I_Sense_1 & I_Sense_2 – SCT016 120a / 40ma (one for each leg of your breaker box)
V_Sense – 9vac transformer

Order boards, parts, and finished assembly at http://arduinotronics.blogspot.com/2016/06/whole-house-energy-monitor.html

 

 

R4 isolated and jumpered

 

Correct V_Sense Schematic – R4 (bottom 10k)

 

Parts Kit

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