Difference between revisions of "RPIZCT4V3T2"

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(Software Configuration)
(Overview)
(13 intermediate revisions by one user not shown)
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[http://lechacalshop.com/gb/internetofthing/39-rpizct4v3t2.html Link to shop]
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[http://lechacalshop.com/gb/internetofthing/79-rpizct4v3t2.html Link to shop]
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[[File:Cart_logo.jpg | 75px |link=http://lechacalshop.com/gb/internetofthing/79-rpizct4v3t2.html]]
  
 
[[File:IMG_0083_small.png | right | 500px]]
 
[[File:IMG_0083_small.png | right | 500px]]
 
 
  
 
=Overview=
 
=Overview=
 
THIS IS A PROJECT UNDER DEVELOPMENT. SOME LINK MIGHT NOT WORK AND SOME INFORMATION MISSING. Please raise your interest with us if you are interested in the thermocouple support.
 
  
 
The RPIZCT4V3T2 can be configured to read both single phase and 3 phase systems.  
 
The RPIZCT4V3T2 can be configured to read both single phase and 3 phase systems.  
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** EU: 77DE-06-09
 
** EU: 77DE-06-09
 
** US: 77DA-10-09
 
** US: 77DA-10-09
** ZMPT101B
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** [[ZMPT101B_Module_1x_v1 | ZMPT101B]]
 
* Temperature:  
 
* Temperature:  
 
** DS18B20
 
** DS18B20
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[[File:Online_config_01.png | 300px| link=http://lechacal.com/RPICT/config/generator/v3.0/]][http://lechacal.com/RPICT/config/generator/v3.0/ Online configurator].
 
[[File:Online_config_01.png | 300px| link=http://lechacal.com/RPICT/config/generator/v3.0/]][http://lechacal.com/RPICT/config/generator/v3.0/ Online configurator].
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=Mezzanine Boards=
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RPIZ_CT4V3T2 has provision to stack an extra mezzanine board to extend the number of sensors. We currently have 2 type of mezzanine.
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===Generic  Mezzanine===
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This is a basic board extending all unused I/O pins of the Arduino microcontroller. These are presented as male pin header. Ground and 5V are also available for each pin.
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This will only be used if you are planning to write your own firmware.
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Each available pins are listed below.
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{| class="wikitable"
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|+
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|-
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!Atmel Pin
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!Arduino Analog
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!Arduino Digital
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|-
 +
| PC0
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| A0
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| D14
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|-
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| PC1
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| A1
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| D15
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|-
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| PC2
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| A2
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| D16
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|-
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| PC3
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| A3
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| D17
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|-
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| PC4
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| A4
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| D18
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|-
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| PC5
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| A5
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| D19
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|-
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| ADC6
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| A6
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| -
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|-
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| ADC7
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| A7
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| -
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|-
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| PD2
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| -
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| D2
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|-
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| PD3
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| -
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| D3
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|-
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|}[[File:IMG_0070.jpeg | 300px]]
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===CT8 Mezzanine===
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The CT8 mezzanine offers an extra 8 CT connection with a 12 bit ADC. Increasing the total number of CT to 12.
  
 
=Enclosure=
 
=Enclosure=

Revision as of 23:15, 19 May 2020

Link to shop

Cart logo.jpg

IMG 0083 small.png

Overview

The RPIZCT4V3T2 can be configured to read both single phase and 3 phase systems.

Several temperature sensors can be interfaced. It has support for both DS18B20 temperature sensor and RTD thermocouples.

It is designed to host a user provided Raspberrypi zero.

The main PCB has provision for one extra mezzanine card to extend the number of sensors.

An enclosure solution is proposed using aluminium extruded case.

Specifications

cpu

  • Hosts RaspberryPi Zero
  • ATmega328 mcu (Arduino UNO)

Sensors

  • 4 CT sensors
  • 3 AC Voltage
  • 1 DS18B20 port (temperature)
  • 1 RTD Thermocouple port

Power

  • Powered from Raspberrypi (microusb)

Other

  • Fits in Aluminium Enclosure from Evatron
  • Option to stack mezzanine board for additional sensors.

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
    • ZMPT101B
  • Temperature:
    • DS18B20
  • Temperature RTD:
    • PT100
    • PT1000 (modification required)

Temperature Sensor

DS18B20

The temperature port supports mutiple sensor on the same Onewire line.

The sketch is programmed to search for all connected probe at bootup and output all their values when polled. If a new probe is connected the arduino mcu should be restarted for the new probe to be registered.

Multiple probes should connected as shown below.

Ds18b20 daisychain.png

RTD Thermocouple

A MAX31865 RTD module is used to interface the RTD sensor with the arduino controller.

There is support for 2 3 and 4 wires thermocouples. Also both PT100 and PT1000 can be used.

Units are sold by default setup for 3 wires PT100 units. Other setup can be configured and require some basic soldering. Full details to configure the MAX31865 module are given by ADafruit webpage here. https://learn.adafruit.com/adafruit-max31865-rtd-pt100-amplifier/rtd-wiring-config

IMG 0086 small.png

Software Configuration

The documentation for serial configuration can be found on this page.
Over Serial Configuration - Sketch 2.0

The default configuration can be obtained using the command

wget lechacal.com/RPICT/config/B4/rpiz_ct4v3t2.conf


The online configurator can be used with the RPIZ_CT4V3T2. Use a single board of RPICT4V3 when editing the configuration.

Online config 01.pngOnline configurator.

Mezzanine Boards

RPIZ_CT4V3T2 has provision to stack an extra mezzanine board to extend the number of sensors. We currently have 2 type of mezzanine.


Generic Mezzanine

This is a basic board extending all unused I/O pins of the Arduino microcontroller. These are presented as male pin header. Ground and 5V are also available for each pin.

This will only be used if you are planning to write your own firmware.

Each available pins are listed below.

Atmel Pin Arduino Analog Arduino Digital
PC0 A0 D14
PC1 A1 D15
PC2 A2 D16
PC3 A3 D17
PC4 A4 D18
PC5 A5 D19
ADC6 A6 -
ADC7 A7 -
PD2 - D2
PD3 - D3
IMG 0070.jpeg

CT8 Mezzanine

The CT8 mezzanine offers an extra 8 CT connection with a 12 bit ADC. Increasing the total number of CT to 12.

Enclosure

The board has been designed to fit inside an aluminium extruded enclosure. 3D printed end plates are provided. Enclosure kit is available in the shop.

IMG 1306 small.png

Files

Arduino Sketch

Default RPIZ_CT4V3T2 Sketch V2.1.0.

Programming

The RPIZ_CT4V3T2 can be programmed using the NanoProg.

IMPORTANT. Make sure the Raspberrypi Zero is removed before connecting the NanoProg.

Once the Arduino firmware flashed the default config must be loaded using the lcl-rpict-config.py tool.

IMG 1888 small.png

Related Pages

Use Emonhub with RPICT

Howto_setup_Raspbian_for_serial_read

How to calibrate the Voltage Port