Difference between revisions of "RPICT4V3 v2.0"

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(Compatibility)
(View the data with Python)
 
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[[File:IMG_1236_small.png | 350px]]
 
[[File:IMG_1236_small.png | 350px]]
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==View the data with Python==
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Please note the configuration must have Emonhub format enabled (format=3). The example script below will be a good starting point.
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 +
First of all make sure you have python-serial package installed
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 +
$ sudo apt-get install python-serial
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 +
Then copy the following into an executable file and run it.
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 +
#!/usr/bin/python2
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import serial
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ser = serial.Serial('/dev/ttyAMA0', 38400)
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try:
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      while 1:
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            # Read one line from the serial buffer
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            line = ser.readline()
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            # Remove the trailing carriage return line feed
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            line = line[:-2]
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 +
            # Create an array of the data
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            Z = line.split(' ')
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            # Print it nicely
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            if len(Z)>7:
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                print ("----------")
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                print ("          \tCT1\tCT2\tCT3\tCT4")
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                print ("Vrms:\t\t%s\t%s\t%s\t%s" % (Z[1], Z[2], Z[3], Z[3]))
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                print ("RealPower:\t%s\t%s\t%s\t%s" % (Z[4], Z[5], Z[6], Z[7]))
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 +
                       
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except KeyboardInterrupt:
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        ser.close()
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 +
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To get the above example just enter the command below.
 +
wget lechacal.com/RPICT/example/RPICT4V3_DEMO.py.zip
 +
unzip RPICT4V3_DEMO.py.zip
 +
and run it using
 +
python RPICT4V3_DEMO.py
  
 
==Emoncms Config (Emonhub)==
 
==Emoncms Config (Emonhub)==

Latest revision as of 13:20, 13 February 2020

RPICT4V3 Version 2

IMG 1241 small.png

Link to shop

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

  • 8 AC current sensors.
  • Compute real power.
  • Fit on Raspberrypi 4 holes mounting pattern.
  • AtMega328 Mcu (Arduino UNO)
  • MCP3208 ADC
  • Stackable (up to 5 boards together)

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
  • AC Voltage sensor:
    • UK: 77DB-06-09
    • EU: 77DE-06-09
    • US: 77DA-10-09

IMG 1239 small.png

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 emoncms)
- 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

Online config 01.png The board can be configured with the online configurator.


IMG 1238 small.png

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.

(note boards are sold already flashed with latest firmware).

noOSC Sketch

The Default sketch allows up to 28 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


IMG 1236 small.png

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)>7:
               print ("----------")
               print ("          \tCT1\tCT2\tCT3\tCT4") 
               print ("Vrms:\t\t%s\t%s\t%s\t%s" % (Z[1], Z[2], Z[3], Z[3]))
               print ("RealPower:\t%s\t%s\t%s\t%s" % (Z[4], Z[5], Z[6], Z[7]))

                       
except KeyboardInterrupt:
       ser.close()


To get the above example just enter the command below.

wget lechacal.com/RPICT/example/RPICT4V3_DEMO.py.zip
unzip RPICT4V3_DEMO.py.zip

and run it using

python RPICT4V3_DEMO.py

Emoncms Config (Emonhub)

Make you read this first.

For default configuration.

 [[11]]
   nodename = RPICT4V3
   hardware = RPICT4V3
   [[[rx]]]
       names = Vrms1,Vrms2,Vrms3,Realpower1,Realpower2,Realpower3,Realpower4
       datacode = 0
       scales = 1,1,1,1,1,1,1
       units = V,V,V,W,W,W,W


Emoncms channels.png

Related Pages

Howto_setup_Raspbian_for_serial_read

How to calibrate the Voltage Port

Update RPICT firmware (CT7V1/CT4V3/CT8)