Difference between revisions of "RPICT3V1"

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Line 42: Line 42:
 
==Notice==
 
==Notice==
  
The RPICT3V1 must have a voltage sensor to compute Real Power. If you do not want to use a voltage sensor and prefer using an estimated fixed value then use the [[RPICT3T1]] instead.
+
The RPICT3V1 must have a voltage sensor to compute Real Power. If you do not want to use a voltage sensor and prefer measuring just current then the [[RPICT3T1]] might be more appropriate.
  
 
(Note it is possible to use a different sketch (firmware) to make the RPICT3V1 using estimated voltage. However you will have to flash the unit for that.)
 
(Note it is possible to use a different sketch (firmware) to make the RPICT3V1 using estimated voltage. However you will have to flash the unit for that.)
Line 49: Line 49:
 
[[File:IMG_1118_small.png | 300px | right]]
 
[[File:IMG_1118_small.png | 300px | right]]
  
* AC Current sensor: SCT-013-000
+
* AC Current sensor:  
 +
** SCT-013-000
 +
** SCT-019
 +
** SCT-006
 
* AC Voltage sensor:  
 
* AC Voltage sensor:  
 
** UK: 77DB-06-09
 
** UK: 77DB-06-09
Line 65: Line 68:
 
[[Attiny Over Serial Configuration A1 | Configuration over serial for sketch version 1.2 & 1.3]].
 
[[Attiny Over Serial Configuration A1 | Configuration over serial for sketch version 1.2 & 1.3]].
  
[[Attiny Over Serial Configuration A2 | Configuration over serial for sketch version 2.0]].
+
[[Attiny Over Serial Configuration A2 | Configuration over serial for sketch version 2.0 & 2.1]].
  
 +
Version 2.0 & 2.1 can be configured using the web tool. [http://lechacal.com/RPICT/config/generator/rpict3v1_v1.0/ Online Config Generator]
  
 
==Output Channels==
 
==Output Channels==
Line 85: Line 89:
 
* PowerFactor without units.
 
* PowerFactor without units.
  
With sketch '''version 2.0''' and above some channels can be disabled. See this page for more info.
+
With sketch '''version 2.0 & 2.1''' and above some channels can be disabled. See this page for more info.
 
[[RPICT3V1 Disable channels sketch 2]]
 
[[RPICT3V1 Disable channels sketch 2]]
  
Line 96: Line 100:
  
 
Then copy the following into an executable file and run it.
 
Then copy the following into an executable file and run it.
<syntaxhighlight lang="Python" line='line'>
+
This is below for '''sketch 1.3''' and below.
 +
 
 
  #!/usr/bin/python2
 
  #!/usr/bin/python2
 
  import serial
 
  import serial
Line 126: Line 131:
 
  except KeyboardInterrupt:
 
  except KeyboardInterrupt:
 
         ser.close()
 
         ser.close()
</syntaxhighlight>
+
 
 +
 
 +
 
 +
This is below for '''sketch 2.0''' and above.
 +
 
 +
#!/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 ("          \tCT1\tCT2\tCT3")
 +
                print ("RealPower:\t%s\t%s\t%s" % (Z[1], Z[6], Z[11]))
 +
                print ("AppaPower:\t%s\t%s\t%s" % (Z[2], Z[7], Z[12]))
 +
                print ("Irms    :\t%s\t%s\t%s" % (Z[3], Z[8], Z[13]))
 +
                print ("Vrms    :\t%s\t%s\t%s" % (Z[4], Z[9], Z[14]))
 +
                print ("PowerFact:\t%s\t%s\t%s" % (Z[5], Z[10], Z[15]))
 +
 +
                       
 +
except KeyboardInterrupt:
 +
        ser.close()
 +
 
 +
 
 +
To get the above example just enter the command below.
 +
wget lechacal.com/RPICT/example/RPICT3V1_DEMO_02.py.zip
 +
unzip RPICT3V1_DEMO_02.py.zip
 +
and run it using
 +
python RPICT3V1_DEMO_02.py
  
 
==Emoncms Config (Emonhub)==
 
==Emoncms Config (Emonhub)==
  
For default configuration.
+
For default configuration with sketch '''version 1.3'''.
  
 
   <nowiki>[[11]]</nowiki>
 
   <nowiki>[[11]]</nowiki>
Line 143: Line 187:
  
 
[[File:rpict3v1_channel_emoncms.png]]
 
[[File:rpict3v1_channel_emoncms.png]]
 +
 +
 +
For default configuration with sketch '''version 2.0''' and above.
 +
 +
  <nowiki>[[11]]</nowiki>
 +
    nodename = my_RPICT3V1
 +
    hardware = RPICT3V1
 +
    [[[rx]]]
 +
      names = RP1, AP1, Irms1, Vrms1, PF1, RP2, AP2, Irms2, Vrms2, PF2, RP3, AP3, Irms3, Vrms3, PF3
 +
      datacode = 0
 +
      scales = 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1
 +
      units = W,W,A,V,.,W,W,A,V,.,W,W,A,V,.
  
 
==Sketch==
 
==Sketch==
Line 155: Line 211:
 
[http://lechacal.com/RPICT/CT3V1/RPICT3V1_v1_3.ino Version 1.3]<br>
 
[http://lechacal.com/RPICT/CT3V1/RPICT3V1_v1_3.ino Version 1.3]<br>
 
[http://lechacal.com/RPICT/CT3V1/RPICT3V1_v2_0.ino Version 2.0]<br>
 
[http://lechacal.com/RPICT/CT3V1/RPICT3V1_v2_0.ino Version 2.0]<br>
 +
[http://lechacal.com/RPICT/CT3V1/RPICT3V1_v2.1.ino Version 2.1]<br>
  
 
===Usage without Voltage sensor===
 
===Usage without Voltage sensor===
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  $ ./lcl-rpict-config.py -w rpict3t1.conf
 
  $ ./lcl-rpict-config.py -w rpict3t1.conf
 
<small>* rpict3'''t'''1 above is not a tipo</small>
 
<small>* rpict3'''t'''1 above is not a tipo</small>
 +
 +
==CAD Drawing==
 +
 +
[[File:Rpict3v1_drawing_01.png | 300px]]
  
 
==Related Pages==
 
==Related Pages==
Line 173: Line 234:
 
[[Use Emonhub with RPICT]]
 
[[Use Emonhub with RPICT]]
  
[[Howto setup rpi3 for CSV reading]]
+
[[Howto setup Raspbian for serial read]]
  
 
[[How to program an Attiny85 or Attiny84]]
 
[[How to program an Attiny85 or Attiny84]]

Revision as of 11:14, 18 July 2019

IMG 1868 small.png

Link to shop

Cart logo.jpg

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

  • 3 AC current sensor
  • 1 AC Voltage sensor.
  • Compute RealPower, ApparentPower, PowerFactor, Vrms, Irms.
  • Fit on Raspberrypi 2 holes mounting pattern.
  • Arduino Attiny84 Microcontroller.


Compatibility

IMG 1866 small.png
Version Compatible?
Raspberrypi 1 A Yes
Raspberrypi 1 B+ Yes
Raspberrypi 2 B Yes
Raspberrypi 3 B Yes
Raspberrypi 3 B+ Yes

Notice

The RPICT3V1 must have a voltage sensor to compute Real Power. If you do not want to use a voltage sensor and prefer measuring just current then the RPICT3T1 might be more appropriate.

(Note it is possible to use a different sketch (firmware) to make the RPICT3V1 using estimated voltage. However you will have to flash the unit for that.)

Recommended sensors

IMG 1118 small.png
  • 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

Configuration

Starting from sketch version 1.1 the RPICT3V1 is configured over serial.

See general instructions for configuration below:

Configuration over serial for sketch version 1.1.

Configuration over serial for sketch version 1.2 & 1.3.

Configuration over serial for sketch version 2.0 & 2.1.

Version 2.0 & 2.1 can be configured using the web tool. Online Config Generator

Output Channels

Using the default sketch version 1.3 and below the output is

NodeID Realpower1 Realpower2 Realpower3 Irms1 Irms2 Irms3 Vrms
  • RealPower in Watts
  • Irms in MilliAmps
  • Vrms in Volts


Using the default sketch version 2.0 and above the output is

NodeID Realpower1 ApparentPower1 Irms1 Vrms1 PowerFactor1 Realpower2 ApparentPower2 Irms2 Vrms2 PowerFactor2 Realpower3 ApparentPower3 Irms3 Vrms3 PowerFactor3
  • RealPower in Watts
  • ApparentPower in Watts
  • Irms in Amperes
  • Vrms in Volts
  • PowerFactor without units.

With sketch version 2.0 & 2.1 and above some channels can be disabled. See this page for more info. RPICT3V1 Disable channels sketch 2

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. This is below for sketch 1.3 and below.

#!/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
            print ("----------")
            for i in range(len(Z)):
                if i==0:
                    print ("NodeID: %s" % Z[0])
                elif i in [1,2,3]:
                    print ("RealPower %d: %s W" % (i, Z[i]))
                elif i in [4,5,6]:
                    print ("Irms %d: %s mA" % (i, Z[i]))
                elif i==7:
                    print ("Vrms: %s V" % (Z[i]))
                       
except KeyboardInterrupt:
       ser.close()


This is below for sketch 2.0 and above.

#!/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 ("          \tCT1\tCT2\tCT3") 
                print ("RealPower:\t%s\t%s\t%s" % (Z[1], Z[6], Z[11]))
                print ("AppaPower:\t%s\t%s\t%s" % (Z[2], Z[7], Z[12]))
                print ("Irms     :\t%s\t%s\t%s" % (Z[3], Z[8], Z[13]))
                print ("Vrms     :\t%s\t%s\t%s" % (Z[4], Z[9], Z[14]))
                print ("PowerFact:\t%s\t%s\t%s" % (Z[5], Z[10], Z[15]))

                       
except KeyboardInterrupt:
       ser.close()


To get the above example just enter the command below.

wget lechacal.com/RPICT/example/RPICT3V1_DEMO_02.py.zip
unzip RPICT3V1_DEMO_02.py.zip

and run it using

python RPICT3V1_DEMO_02.py

Emoncms Config (Emonhub)

For default configuration with sketch version 1.3.

 [[11]]
   nodename = my_RPICT3V1
   hardware = RPICT3V1
   [[[rx]]]
      names = RP1, RP2, RP3, Irms1, Irms2, Irms3, Vrms
      datacode = 0
      scales = 1,1,1,1,1,1,1
      units =W,W,W,mA,mA,mA,V


Rpict3v1 channel emoncms.png


For default configuration with sketch version 2.0 and above.

 [[11]]
   nodename = my_RPICT3V1
   hardware = RPICT3V1
   [[[rx]]]
      names = RP1, AP1, Irms1, Vrms1, PF1, RP2, AP2, Irms2, Vrms2, PF2, RP3, AP3, Irms3, Vrms3, PF3
      datacode = 0
      scales = 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1
      units = W,W,A,V,.,W,W,A,V,.,W,W,A,V,.

Sketch

Units are sold flashed with sketch for use with Voltage sensor.

Usage with Voltage sensor

Version 1.0
Version 1.1
Version 1.2
Version 1.3
Version 2.0
Version 2.1

Usage without Voltage sensor

If you wish to use the board without using the voltage sensor use the sketch below. Note power will be estimated power only using fixed voltage setup in configuration.
No Voltage Version 1.0
No Voltage Version 1.1
No Voltage Version 1.2

Once the sketch uploaded write the configuration as follow:

$ wget lechacal.com/RPICT/config/A0/rpict3t1.conf
$ ./lcl-rpict-config.py -w rpict3t1.conf

* rpict3t1 above is not a tipo

CAD Drawing

Rpict3v1 drawing 01.png

Related Pages

How to calibrate the Voltage Port

Use Emonhub with RPICT

Howto setup Raspbian for serial read

How to program an Attiny85 or Attiny84