Revision as of 14:43, 18 March 2020

RPICT7V1 (This covers for both hardware versions 2 and 3)

This page is for board specific information. More information can be found on the generic page for RPICT series.

7 AC current sensors.
1 AC Voltage sensor.
Measure RMS Current and Voltage, Active power, Apparent Power, Power Factor.
Fit on Raspberrypi 4 holes mounting pattern.
AtMega328 Mcu (Arduino UNO)
MCP3208 ADC
Stackable with itself, RPICT8 and RPICT4V3.

Compatibility


Version	Compatible?
Raspberrypi 1 A	No
Raspberrypi 1 B+	Yes
Raspberrypi 2 B	Yes
Raspberrypi 3 B	Yes
Raspberrypi 3 B+	Yes
Raspberrypi 4 B	Yes

Asus Tinkerboard has been reported to work with RPICT units. Note we wont be able to provide support for the Tinkerboard.

Recommended sensors

AC Current sensor:
- SCT-013-000
- SCT-019
- SCT-006
AC Voltage sensor:
- UK: 77DB-06-09
- EU: 77DE-06-09
- US: 77DA-10-09

VOLTAGE OUTPUT CT ARE NOT COMPATIBLE WITH THIS BOARD.

Stacking Configuration

General stacking information is described in the RPICT stacking page. RPICT_Stacking

Software Configuration

Using a serial line terminal program one can configure the following:

- Polling interval
- Output format (csv or emonhub)
- Calibration values (Voltage and Current)
- Voltage/current combinations for real power computation.
- Output channels

The documentation for serial configuration can be found on this page.
Over Serial Configuration - Sketch 2.2
Over Serial Configuration - Sketch 2.3
Over Serial Configuration - Sketch 2.4
Over Serial Configuration - Sketch 2.5
Over Serial Configuration - Sketch 2.6
Over Serial Configuration - Sketch 2.8

Over Serial Configuration - Sketch 3.0

The board can be configured with the online configurator.

Usage without Voltage sensor

Default configuration expect a voltage sensor to be plugged in.

The configuration rpict7v1_noV.conf will only output current Irms for the 7 channels.

wget lechacal.com/RPICT/config/B4/rpict7v1_noV.conf
$ lcl-rpict-config.py -w rpict7v1_noV.conf

Files

Default Sketch

Default Sketch V2.5.

Default Sketch V2.6.

Default Sketch V2.7.1.

Default Sketch V2.8.0.

Default Sketch V3.0.0.

Default Sketch V3.0.1.

noOSC Sketch

The Default sketch allows up to 24 computation nodes to be run. If more are needed for higher stacks then we recommend to use the noOSC sketch. This is the same as the default sketch but Over Serial Configuration (OSC) as been removed to allow up to 40 nodes to be computed. Configuration has to be edited in the sketch.

noOSC Sketch v1.0
noOSC Sketch v1.1

View the data with Python

Please note the configuration must have Emonhub format enabled (format=3). The example script below will be a good starting point.

First of all make sure you have python-serial package installed

$ sudo apt-get install python-serial

Then copy the following into an executable file and run it.

#!/usr/bin/python2
import serial
ser = serial.Serial('/dev/ttyAMA0', 38400)

try:
      while 1:
           # Read one line from the serial buffer
           line = ser.readline()

           # Remove the trailing carriage return line feed
           line = line[:-2]

           # Create an array of the data
           Z = line.split(' ')

           # Print it nicely
           if len(Z)>15:
               print ("----------")
               print ("Vrms:\t%s" % Z[15])
               print ("          \tCT1\tCT2\tCT3\tCT4\tCT5\tCT6\tCT7") 
               print ("RealPower:\t%s\t%s\t%s\t%s\t%s\t%s\t%s" % (Z[1], Z[2], Z[3], Z[4], Z[5], Z[6],$
               print ("Irms     :\t%s\t%s\t%s\t%s\t%s\t%s\t%s" % (Z[8], Z[9], Z[10], Z[11], Z[12], Z[$


except KeyboardInterrupt:
      ser.close()

Emoncms Config (Emonhub)

Make sure you read this first.

For default configuration. Used as single board only (not stacked).

 [[11]]
   nodename = my_RPICT7V1
   hardware = RPICT7V1
   [[[rx]]]
      names = RP1, RP2, RP3, RP4, RP5, RP6, RP7, Irms1, Irms2, Irms3, Irms4, Irms5, Irms6, Irms7, Vrms
      datacode = 0
      scales = 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1
      units =W,W,W,W,W,W,W,mA,mA,mA,mA,mA,mA,mA,V