From lechacal
Revision as of 09:53, 9 January 2019 by Administrator (Talk | contribs)

Jump to: navigation, search
IMG 1814 small.png

Link to shop

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

  • 4x AC Current Sensors
  • 4x DS18B20 Temperature Sensors
  • Attiny84 Mcu


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

Current Sensor

IMG 1542 small.png

Recommended sensor: SCT-013-000

For AC current only.

Temperature Sensor

Connector: 3.5mm Jack

The intended temperature sensor is the DS18B20.

The connector is a 3 way screw terminal connector.


Starting from sketch version 1.4 the RPICT4T4 is configured over serial.

See general instructions for configuration over serial.

Emoncms Config (Emonhub)

For default configuration.

   nodename = RPICT4T4
   hardware = RPICT4T4
       names = Power1, Power2, Power3, Power4, T1, T2, T3, T4
       datacode = 0
       scales = 1,1,1,1,1,1,1,1
       units = W,W,W,W,C,C,C,C

Python Example

Please note the uploaded sketch must have CSV enabled. 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.

import serial
ser = serial.Serial('/dev/ttyAMA0', 38400)

       while 1:
               response = ser.readline()
               z = response.split(",")
               if len(z)>6:
                       print "Power 1: %s Watts" % z[0]
                       print "Power 2: %s Watts" % z[1]
                       print "Power 3: %s Watts" % z[2]
                       print "Power 4: %s Watts" % z[3]
                       print "Temperature 1: %s C" % z[4]
                       print "Temperature 2: %s C" % z[5]
                       print "Temperature 3: %s C" % z[6]
                       print "Temperature 4: %s C" % z[7][:-2]
except KeyboardInterrupt:


Sketch version 1.2

Sketch version 1.3

Sketch version 1.4

Sketch version 1.5

Sketch version 1.6

Related Pages


How to program an Attiny85 or Attiny84