Control unit for plasma experiment.

1. Overview

DOCS

Controls	Settings

1. Introduction

This control unit is based on the Raspberry Pi with AD converter and relays. Main purpose of the unit is to control parameters and log signals.

Experimental parameters:

• temperature
• current
• pressure
• others

In our project, we have an experimental device where we want to measure several signals, plus to implement a feed-back control.

Control unit box:

Front view	Back view

1.1 Hardware components:

• Raspberry Pi 3 Model B
• ADC (Analog to Digital Convertor), 16 bit 32 channel: I2C アナログ入力ボード AIO-32/0RA-IRC
• solid-state relay: Celduc SO842074
• halogen lamp as a heating element: Panasonic JCD100V300WCG
• 7'' touch screen as indicator and input device: EVICIV B07PY5XND3

2. How to run

Make sure that GPIO pins are enabled:

sudo pigpiod

To start the program cd ~/path/to/controlunit

pyton -m controlunit.main

3. Requirements

- pyqtgraph
- numpy
- scipy
- matplotlib
- pandas
- python3-smbus
- RPi.GPIO

pyqtgraph requires either pyqt5 or pyside. To install pyqt5, use apt-get:

sudo apt-get update
sudo apt-get install qt5-default pyqt5-dev pyqt5-dev-tools

RPi.GPIO:

sudo apt-get update
sudo apt-get install rpi.gpio

python3-smbus:

python3 -m pip install smbus --user

or

sudo apt-get install python3-smbus