| Created by |
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| Created | June 29, 2013 |
| Last modified | October 22, 2013 |
| Tags | adc cny70 gpio mcp3004 mcp3008 pi raspberry raspberry-pi rpi spi |
This is the schematic for reading (analog) kilowatt-hour meters. This schematic has two CNY70 sensors to read the "black spot" on the rotating disk. Software will read the ADC converter info and can determine the rotation direction of the disk, and will count the number of rotations.
This schematic is ideal if you have a PV-system and want to know how much you export and/or import from the net.
The source code (in Python) for the Raspberry Pi can be downloaded here: http://patrick.i234.me/kwhmeter/kwhmeter_20131014.py
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Do you have software for the Raspberry for measuring the KWH-meter? I do have not the experiance for programming the software myself. I have already a Raspberry for logging my solar-cells (PhotoVoltage Cells) energy from my SunnyExplorer ( energy convertor) with a bluetooth connection with my Raspberry en sending the data with a WiFi connection to PVoutput.org. What I'm looking for is the same, I The data from the KWH-meter must be sent to PVoutput.org so I can see my generated power and my used power. |
July 12, 2013 |
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Hallo Thijs, I'll write this in English, so other people will be able to read this as well…. Currently, I'm still fine-tuning my software. However, I am able to log the KWH data to my DB on the Pi. I plan to make a script that will update my PVOutput page with the consumption data soon. For this I need to combine both the SMA data and the KWH data to calculate the usage. I've uploaded my today usage via the manual upload to my test-PV-account here: http:///12L4ptg |
July 18, 2013 |
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