FNIRSI DC6006L is a programmable DC power supply that is quite compact and inexpensive. This CLI tool/library allows you to control an unit over a built-in USB-serial port.
This work is based on the work by jcheger for a similar model, DC-580. They seem to support same set of commands, but are not compatible in message format.
pip install dc6006l
dc6006l - Controls FNIRSI DC Power Supply (DC-6006L, etc)
Usage: dc6006l [-p devport] [-m model] cmd [cmd...]
Commands:
on: Turn power on
off: Turn power off
v=<V>: Set target voltage
c=<A>: Set target current
ovp=<V>: Set over-voltage limit
ocp=<A>: Set over-current limit
opp=<W>: Set over-power limit
ohp=<sec>: Set over-hour limit (0 to disable)
noprotect: Disable protection
stat: Show status (packed trace)
trace=<n>: Show trace capture (infinite if n=-1)
flush: Flush/clear log buffer
echo=<str>: Print given input
sep: Print separator string
sleep=<sec>: Sleep for given seconds
check: Enable double-check mode
Example:
# Output 1V1A for ~3s
$ dc6006l v=1 c=1 on sleep=3 off
# More complex operation
$ dc6006l check v=1.5 c=1.0 on flush sep trace=15 c=0.5 flush sep trace=15 off
NOTE:
- Set envvar FNIRSI_PS=/some/devport to specify default port to use.
While this code works for me, your milage may vary.
Just as a head-up, in one case, target voltage was unexpectedly set to 15V when I sent a command to set to 1.5V (V0150). Because there is no checksum in frame, I suppose the unit dropped a byte and somehow interpreted as "V1500". While the hardware is nice, it seems there is a serious issue with firmware of the product that it easily drops data sent over a serial port.
I added double-check mode (cmd: check) to cope with this, but this mode is ineffective if you need to change the setting while the unit is already on.