@transistors62 : the default baud rate for serial logging is 9600 baud. So I am really puzzled about how / why it is being set to 500000. Please walk us through this: please describe the steps you take to change the baud rate on both your other system and the OpenLog Artemis; please also describe the steps you take before and after you remove and reinsert the SD card. I am wondering if the settings are being corrupted in some way, or not saved correctly?
Best,
Paul