tested rdserialtool

input/blog/2021/2021_06_25_rd_psu_mod.md

 They both come in the form of a small extra PCB, with either a Bluetooth module or a USB-Serial chip.
 I added mounts for the Bluetooth module in my design.
 
-Supposedly ['rdserialtool' by rfinnie](https://github.com/rfinnie/rdserialtool) can be used to access the device via the serial port over USB or Bluetooth.
-I have not yet gotten this to work with Bluetooth, however, and have not tried USB.
+The software ['rdserialtool' by rfinnie](https://github.com/rfinnie/rdserialtool) can be used to access the device via the serial port over USB or Bluetooth.
+I have tested this with the Bluetooth module and it seems to work as expected.
 Also see the [sigrok wiki](https://sigrok.org/wiki/RDTech_DPS_series) for some more about the protocol and available settings.
 
 My 3D design for the replacement front [is available on my Gitea server](https://git.xythobuz.de/thomas/3d-print-designs/src/branch/master/basetech_bt305_cover.scad).