tenma-serial 0.2.0

Serial control of tenma device

Tenma DC power supply controllers

Provides two basic controllers (tested on Linux) for a TENMA DC power supply via serial interface.

• tenmaControl (command line utility)
• gtkIndicator (GTK indicator to sit on tray)

tenmaControl

What is this?

A small command line program / library to setup a Tenma 72-XXXX DC POWER SUPPLY from your computer via SERIAL.

Supports the following models with predefined limits: * 72-2545 -> tested on HW * 72-2535 -> Set as manufacturer manual (not tested) * 72-2540 -> Set as manufacturer manual (not tested) * 72-2550 -> Set as manufacturer manual (not tested) * 72-2930 -> Set as manufacturer manual (not tested) * 72-2940 -> Set as manufacturer manual (not tested)

Also, even if not described, should support Koradka models and other Velleman units which are just rebrandings of the same internals.

Originally, Coming back from holidays was hard. So I spent some time with a little game (tongue). You'll find a small explanation of the code in:

https://jcastellssala.com/2017/10/31/tenma72-2540-linux-control/

Installing

From pip

pip install tenma-serial

Locally

It does not have many requirements, so you might just clone the repo and run it. install the required packages first.

pip install -r requirements.txt

Usage examples

Note that it can be connected via a usb to serial cable, or directly with the provided USB cable. In Linux it identifies the usb as _Bus 001 Device 015: ID 0416:5011 Winbond Electronics Corp. Virtual Com Port _, running dmesg to get where the /dev/ttyACMX device registerd and pointing tenmaControl.py to that device should work.

Print the Tenma version

python tenmaControl.py /dev/ttyUSB0

Set the current and the voltage

For example: 2.2 Amperes 5V:

python tenmaControl.py -c 2200 -v 5000 /dev/ttyUSB0

Turn on the channel output

python tenmaControl.py --on /dev/ttyUSB0

Turn OFF the channel output

python tenmaControl.py --off /dev/ttyUSB0

Load an existing memory

python tenmaControl.py -r 1
python tenmaControl.py --recall 2

Create a new value for a memory 4

python tenmaControl.py -c 2200 -v 5000 --save 4 /dev/ttyUSB0

Print everything

python tenmaControl.py -c 2200 -v 5000 --save 4 --verbose --debug /dev/ttyUSB0

gtkIndicator

A very simple GTK indicator to control a tenma DC power supply from a graphical desktop. Provides ON, OFF and RESET facilities. Simply start it with:

./gtkIndicator.py

Known Shortcomings:

• Cannot read current consumption. (Function implemented, does not seem to work)
• The physical buttons are blocked for a while after connecting.