Santoker R200 Touchscreen Unstable BT/ET readings via Bluetooth

[TokiiTakii]

Hi,

I am experiencing unstable BT and ET readings when connecting a Santoker R200 Touchscreen roaster (same system R Master Series) to Artisan via Bluetooth.

The connection itself is successful, but the temperature values are incorrect. BT/ET readings alternate between abnormally low and high values (for example, jumping between fixed values like ~68 and ~123), and do not reflect the actual bean temperature.

Details:

• Roaster: Santoker R200 Touchscreen
• Connection: Bluetooth
• Artisan versions tested: 3.4.0
• OS: Windows
• Sensors appear to be functioning correctly on the machine display.
• Issue only occurs on the data received by Artisan

What I’ve observed:

• Using “R Master Series Bluetooth”: data is received, but values fluctuate abnormally
• Using “R Series Bluetooth”: no BT/ET data is read

Has anyone experienced similar behavior with Santoker touchscreen models, or is there a recommended configuration or driver for this model?

Thank you.

[poundy]

From https://artisan-scope.org/machines/santoker/ there is no specific mention of the touchscreen model. I would suggest the R Master model in your tests is the best fit.

Has this ever worked for you - or is this a new roaster that you're setting up for the first time?
Are any of the data points you receive "correct" as in they correspond to the machines' readouts but then deviate?

I can't be sure but this seems to me like some form of sampling error where it's reading values but not getting response from the machine fast enough, and is causing some mis-recording or averaging of the values.

You can see from the release history https://github.com/artisan-roaster-scope/artisan/blob/master/wiki/ReleaseHistory.md that 3.4 was a significant change. Perhaps as a test you should try 3.2 and see if that reports differently, and we can then consider this a behaviour in 3.4 that we need to understand.