dl24-electronic-load

Python library and CLI tools for DL24 electronic load device.

Installation

It is recommended to set a virtual Python environment up before installing packages.

virtualenv env
source env/bin/activate

pip install -U git+https://github.com/KrystianD/dl24-electronic-load

DL24 management

tools.manage module is used to send commands to the DL24 device over serial port link.

Usage

# Read settings and measurements
dl24-manage -p /dev/ttyUSB0 read

# Set the parameters up and start
dl24-manage -p /dev/ttyUSB0 set-current 10
dl24-manage -p /dev/ttyUSB0 set-voltage-cutoff 10.7
dl24-manage -p /dev/ttyUSB0 enable

Supported commands

Command	Description
set-current <amps>	set discharging current
set-voltage-cutoff <voltage>	set voltage at which discharging will stop
set-timer <seconds>	set maximum discharging time
enable	enable discharger
disable	disable discharger
reset	reset cumulative statistics
read -f [text,json]	read current settings and measurements

Example

$ dl24-manage -p /dev/ttyUSB0 read -f json
{
  "enabled": true,
  "voltage": 11.809,
  "current": 9.999,
  "energy": 19.841,
  "charge": 238.5,
  "time": "01:59:03",
  "temperature": 35,
  "current_limit": 10.0,
  "voltage_cutoff": 10.7,
  "timer": "00:00:00"
}

DL24 monitoring

tools.monitor module displays real-time discharging data and can save discharging charts.

Usage

# View real time measurements
dl24-monitor -p /dev/ttyUSB0

# View real time measurements and save to test.csv file
dl24-monitor -p /dev/ttyUSB0 -o test.csv
dl24-monitor -p /dev/ttyUSB0 -o test.csv --append

Example

$ dl24-monitor -p /dev/ttyUSB0
12.06 V | 10.00 A | 120.67 W |  91.30 Wh |  7.51 Ah | 0d 00:45:05 | 37 °C

Charts plotting

tools.plotter module plots charts using matplotlib from the CSV file saved with tools.monitor.

Usage

python -m tools.plotter test.csv

Example