https://github.com/davatorium/um25c-client
https://github.com/davatorium/um25c-client
Last synced: about 1 year ago
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- Host: GitHub
- URL: https://github.com/davatorium/um25c-client
- Owner: davatorium
- License: other
- Created: 2019-03-22T20:57:02.000Z (about 7 years ago)
- Default Branch: master
- Last Pushed: 2019-03-22T20:59:11.000Z (about 7 years ago)
- Last Synced: 2025-05-13T00:05:03.203Z (about 1 year ago)
- Language: C
- Size: 159 KB
- Stars: 8
- Watchers: 5
- Forks: 1
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: COPYING
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README
# UM25C
The UM25(C) is an USB Power Meter by RD Tech. It can be found for less then €20 on AliExpress.
The specifications are:
UM25C specifications:
* Display
* 1.44″ color LCD display
* 0-5 brightness setting
* Auto screen off time – 0 to 9 minutes
* Refresh rate – 2Hz
* Measurement Range & Accuracy
* Voltage – 4-24.000V ±0.5‰ + 2digits
* Current – 0-5.0000A ±1‰ + 4 digits
* Capacity – 0-99999mAh
* Energy accumulation – 0-99999mWh
* Load impedance – 0.8Ω-9999.9Ω
* Time range – 0-99h59min59s
* Temperature range – -10℃ to 100℃ ±3℃
* Connectivity – Bluetooth (C model)
* USB – 1x USB male port, 1x USB female port, 1x micro USB port, 1x USB 2.0 type C port
* Quick charge recognition mode – QC2.0, QC3.0, APPLE 2.4A/2.1A/ 1A/0.5A, Android DCP for SAMSUNG
* Misc – 4 buttons to navigate menus, Bluetooth switch
* Dimensions – 71.2mmx30.5mmx12.4mm(UM25C)
* Weight – 23.74g
It comes with a android and windows application for logging.
This tool is can be used to log the following samples:
* Amperage (A)
* Voltage (V)
* Wattage (W)
* Temperature (C).
* Data group Summed Amp (Ah)
* Data group Summed Watt (Wh)
(more to be added in future)
It outputs the samples to standard out.
This tool does not handle the bluetooth connection, use bluetoothct/blueman for this. You connect to the
`/dev/rfcomm0` device.
You can also use this with an UM25 via a USB to serial cable.
The logfile can then be parsed f.e. gnuplot:
