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by crjens
Wed Sep 07, 2016 9:56 pm
Forum: Automation, sensing and robotics
Topic: PiPowerMeter: Home energy monitoring
Replies: 43
Views: 15830

Re: PiPowerMeter: Home energy monitoring

Did you try reversing the current probe? Normally, the side of the probe with the writing on it should point toward the source. Please send any additional questions to [email protected]
by crjens
Fri Sep 02, 2016 10:10 pm
Forum: Automation, sensing and robotics
Topic: PiPowerMeter: Home energy monitoring
Replies: 43
Views: 15830

Re: PiPowerMeter: Home energy monitoring

The power supply works on 120V or 240V, 50Hz or 60Hz. Anything above 240V would probably require an external power supply for safety reasons but if you are aware of a device that meets those specs, I'd love to hear about it. I have boards available. Please email me at [email protected].com and I'll sen...
by crjens
Wed Jun 15, 2016 4:28 pm
Forum: Automation, sensing and robotics
Topic: PiPowerMeter: Home energy monitoring
Replies: 43
Views: 15830

Re: PiPowerMeter: Home energy monitoring

My original plan was to add a small dc bias to the inputs but in my prototyping I found that the mux's do allow small negative voltages to pass through. The CS5463 allows a max input of 250 mV pp on the voltage and current inputs which seem to pass through with no issues.
by crjens
Tue Mar 01, 2016 5:42 am
Forum: Automation, sensing and robotics
Topic: PiPowerMeter: Home energy monitoring
Replies: 43
Views: 15830

Re: PiPowerMeter: Home energy monitoring

The software includes scale factors for both the voltage and current channels so you can use any combination of transformer and/or shunt resistor that gets you to appropriate input levels for the cs5463 and then adjust the scale factors to compensate. The easiest way to do this is to measure a known...
by crjens
Wed Feb 17, 2016 2:36 am
Forum: Automation, sensing and robotics
Topic: PiPowerMeter: Home energy monitoring
Replies: 43
Views: 15830

Re: PiPowerMeter: Home energy monitoring

There's been a fair bit of interest so I had a new batch of boards made up and I have plenty in stock. I've been charging US $75.00 for the control board and $25 of each 16 channel input board plus shipping. The boards come fully assembled and tested. You'll need to supply your own Raspberry Pi (A+,...
by crjens
Thu Dec 17, 2015 4:46 pm
Forum: Automation, sensing and robotics
Topic: PiPowerMeter: Home energy monitoring
Replies: 43
Views: 15830

Re: PiPowerMeter: Home energy monitoring

In order to read the output of a CT sensor you need an A/D converter. The Pi only has digital inputs so you'll need to look into an appropriate add-on board. There are several available, just search for "raspberry pi a/d converter"
by crjens
Sat Dec 12, 2015 8:49 pm
Forum: Automation, sensing and robotics
Topic: PiPowerMeter: Home energy monitoring
Replies: 43
Views: 15830

Re: PiPowerMeter: Home energy monitoring

Hi Luc, Yes, boards are available. The control board runs US $75 and each 16 channel sensor board is $25. The boards come fully tested and ready to go. You can stack up to 8 sensor boards on each control board. You will need to supply your own Raspberry Pi and current sensors. Please send me mail at...
by crjens
Mon Nov 16, 2015 6:14 pm
Forum: Automation, sensing and robotics
Topic: PiPowerMeter: Home energy monitoring
Replies: 43
Views: 15830

Re: PiPowerMeter: Home energy monitoring

You'll either have to reboot after the install or else type 'nodestart' from the command prompt to get the node process started. It should auto start when the system reboots.
by crjens
Tue Nov 10, 2015 4:35 pm
Forum: Automation, sensing and robotics
Topic: PiPowerMeter: Home energy monitoring
Replies: 43
Views: 15830

Re: PiPowerMeter: Home energy monitoring

Mark, You can use any CT's that you want as long as they are current output type (without internal shunt resistors). The one you specified should work just fine but since they are not split core but you'd need to disconnect your circuits and feed the wires through. I've used the SCT-006 (30A) http:/...
by crjens
Mon Nov 02, 2015 3:55 pm
Forum: Automation, sensing and robotics
Topic: PiPowerMeter: Home energy monitoring
Replies: 43
Views: 15830

Re: PiPowerMeter: Home energy monitoring

@cumak - boards are available for $75 for the control board and $25 for each 16 channel input board. You can stack up to 8 input boards on a single control board. The boards are fully soldered, tested and ready to go. You'll need to supply your own Raspberry Pi and current sensors. IM me if you are ...
by crjens
Tue Oct 13, 2015 2:54 pm
Forum: Automation, sensing and robotics
Topic: PiPowerMeter: Home energy monitoring
Replies: 43
Views: 15830

Re: PiPowerMeter: Home energy monitoring

@MOKANMAN - Yes I still have boards available. I'll IM you details
by crjens
Mon Jun 22, 2015 4:41 pm
Forum: Automation, sensing and robotics
Topic: PiPowerMeter: Home energy monitoring
Replies: 43
Views: 15830

Re: PiPowerMeter: Home energy monitoring

The 7878 does appear to be a better fit for direct measurement of 3 phase as it has enough voltage and current inputs to directly perform the 3 phase energy calculations. As I mentioned above, another way to do it is to separately measure each leg of the 3 phase circuit and then sum the results to g...
by crjens
Fri Jun 19, 2015 10:42 pm
Forum: Automation, sensing and robotics
Topic: PiPowerMeter: Home energy monitoring
Replies: 43
Views: 15830

Re: PiPowerMeter: Home energy monitoring

I'm not familiar with either of these IC's but I took a quick look at the spec sheets. The MCP3917 appears to be a multichannel A/D converter and does not support direct calculation of energy, etc. If you went that route you'd need to come up with some way to do those calculations. The ADE7878 appea...
by crjens
Fri May 29, 2015 4:50 am
Forum: Automation, sensing and robotics
Topic: PiPowerMeter: Home energy monitoring
Replies: 43
Views: 15830

Re: PiPowerMeter: Home energy monitoring

@philletourneau - email me at [Mod: removed email address -please use PM] if you are interested in boards.
by crjens
Wed May 13, 2015 8:25 pm
Forum: Automation, sensing and robotics
Topic: PiPowerMeter: Home energy monitoring
Replies: 43
Views: 15830

Re: PiPowerMeter: Home energy monitoring

Thanks for the kind remarks. I do have extra boards that I'd be willing to part with. Direct message me if anyone is interested.
by crjens
Wed May 13, 2015 4:26 pm
Forum: Automation, sensing and robotics
Topic: PiPowerMeter: Home energy monitoring
Replies: 43
Views: 15830

PiPowerMeter: Home energy monitoring

Hi, I've been working on a Raspberry Pi based home energy monitor that i'd like to share with the group. It's based on the Cirrcus Logic CS5463 energy IC and supports monitoring up to 128 circuits. The Raspberry Pi runs a nodejs based service that controls the hardware and a web based monitoring por...

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