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Description:

psuprogs 0.1.1

psu-progs

A collection of utilities to put a computer-connected power supplies to good use.
The extraordinarily compact collection includes only a CLI tool for charging lithium-ion batteries with a Korad PSU.
Installation
pip install psu-progs

Quick-show-me-a-thing
# Charge a 1400mAh lithium-ion battery, with a Korad PSU connected at /dev/ttyACM0
korad-charge-lithium-ion -p /dev/ttyACM0 -c 1.4

Full command help
Usage: korad-charge-lithium-ion [OPTIONS]

Charge a Li-ion battery using a Korad K300XP power supply

Options:
-p, --port DEVICE Name of serial device the power supply can be
communicated through, e.g. /dev/ttyACM0
[default: /dev/ttyUSB1; required]
-c, --capacity FLOAT Labeled capacity of battery, in amp hours.
[required]
--charge-current FLOAT Current to use while in the constant-current
charging phase, in amps. If not specified,
this defaults to half the battery_capacity.
--charge-voltage FLOAT Voltage to use while in constant-voltage
phase. For Li-ion cells, this value should be
≤4.2. [default: 4.2]
--charge-cutoff-ratio FLOAT Ratio of the charge_current used to derive
the value of measured output current at which
to stop charging. [default: 0.1]
--channel INT Which channel to output power from (for power
supplies with multiple channels). [default:
0; 0<=x<=1]
--num-samples INT When measuring current, use the average of
this many number of samples. Using a value
over 1 is recommended, as anomalous blips may
be measured. This also addresses low readings
when output is first enabled. [default: 3;
x>=0]
--max-successive-failures INT After this number of continuous errors are
encountered while attempting to read the
output current, stop charging. [default: 5;
x>=0]
--help Show this message and exit.

Developing
This package uses poetry for dependency management. To get started hacking around the codebase:

Create a new virtualenv (or skip this step and let poetry do it for you)
pip install poetry
poetry install
Good luck!

Contributing
If you have other utilities you'd like to add, or other PSUs you'd like to support, pull requests are welcomed! I may not be able to physically test all contributions, but I sure can review and merge :)