Home » Energy Monitor PCB with XBee support

 I have made a PCB with the following features:

  • two current sensors in parallel(the circuit will sum the sensors output)
  • two different sockets to plug your current sensor: screw and 3.5mm jack
  • voltage sensor
  • xbee socket
  • runs on 3.3v and 8Mhz (arduino pro bootloader)

I setup a git repository on github: github.com/trunet/Energy-Monitor-PCB

Software is available on GitHub on the same repository.

TODO/Notes:

  • As noted on: openenergymonitor.org/emon/node/172, a 1:1 isolating transformer is needed to monitor voltage from mains
  • 10 x PCBs are ordered from www.iteadstudio.com/ and is not tested yet.
  • Improve software to work on a not 100% uptime environment(maybe a queue and two threads producer/consumer on python software).

This is the schema of version 1.

 

Made by Wagner Sartori Junior <wsartoriATgooglemail.com> (change to gmail.com)

Sergegsx's picture

2ct ??

Submitted by Sergegsx on Thu, 13/10/2011 - 12:06.

hi! I would like to ask why are u using 2 CT sensors? (sum the circuit output) ?? please could you explain this a bit, and maybe why is it a good idea?

thanks

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trunet's picture

My house is 3-wire. 2 x 110v

Submitted by trunet on Thu, 13/10/2011 - 19:07.

My house is 3-wire. 2 x 110v and 1 x ground. So I used 2 CT sensors to sum them.

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Sergegsx's picture

upsss forgot that could be a

Submitted by Sergegsx on Thu, 13/10/2011 - 21:33.

upsss forgot that could be a possibility :P

I am designing a new pcb for my monitor where i want to add 3 or 4 CT sensors to monitor different parts of the house and I guess i thought you were doing the same.

thanks for clarifying.

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