After playing around with the counter for a week, I feel that 2 things can definitely be improved:
1. missing a text mode like 600+; 2. swivel should not override "movement detection".
Another thing is the dosimeter mode's threshold can't easily be adjusted by pressing the buttons and I didn't find a command that changes this setting from the serial terminal. If there's indeed no such a command, then: 3. missing a serial command to change dosimeter warning threshold and / or toggle only this warning.
If you don't want to add a text mode, then at least allow users to mute the dosage warning independently.
I know pancake GM tubes are not energy compensated, but a feature is a feature.
By the way, what does that +-5% accuracy refer to?