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| -rw-r--r-- | README.md | 25 | ||||
| -rwxr-xr-x | bin/kaxxxxp-viewer | 5 |
2 files changed, 27 insertions, 3 deletions
@@ -1,8 +1,29 @@ # kaxxxxp-viewer - Data Logger and Viewer for KAxxxxP power supplies **kaxxxxp-viewer** acquires and visualizes voltage and current data from -KAxxxxP power supplies. These PSUs are equipped with a USB port, which can -be used both for remote control and data acquisition using a serial protocol. +KAxxxxP power supplies. These are sold under brand names such as Korad or RND +Lab and equipped with a USB serial port, allowing them to be used as simple, +low-resolution measurement devices. See the [sigrok +wiki](https://sigrok.org/wiki/Korad_KAxxxxP_series) for details. + +It has been successfully used with "RND 320-KA3005P" (single-channel) and "RND +320-KA3305P" (dual-channel) supplies. Observed attributes: + +* Time resolution: **a few Hz** +* Voltage range: 0 .. 30 V +* Voltage resolution: 10 mV +* Current range: 0 .. 5 A +* Current resolution: 1 mA + +Voltage and current range depend on the device, the resolutions are probably +identical. + +**Warning:** In addition to reading voltage and current values, the serial +interface also supports *setting* them. This is not supported by +kaxxxxp-viewer. However, be warned that communication errors or bugs may cause +the power supply to receive a write command with an arbitrary voltage or +current value, which may result in damaged equipment, fire, or other harm. By +using this software, you acknowledge that you are aware of these risks. See `bin/kaxxxxp-viewer --help` for usage details. diff --git a/bin/kaxxxxp-viewer b/bin/kaxxxxp-viewer index 6b7f51f..073b9f5 100755 --- a/bin/kaxxxxp-viewer +++ b/bin/kaxxxxp-viewer @@ -9,7 +9,8 @@ DESCRIPTION -kaxxxxp-viewer logs voltage and current readings provided by a KAxxxxP power supply. +kaxxxxp-viewer logs voltage and current readings provided by a KAxxxxP power supply +with serial/USB interface, sold under brands such as Korad or RND Lab. Measurements can be taken directly (by specifying <measurement duration> in seconds) or loaded from a logfile using --load <file>. Data can be plotted or aggregated on stdout. @@ -131,6 +132,8 @@ class KA320: return self.reader.get_expected_line() return self.reader.get_line() + # See <https://sigrok.org/wiki/Korad_KAxxxxP_series> for supported commands + def connect(self): return self.rw(b"*IDN?", 16) |