Unfortunately I got an old Roomba 563 with a battery problem.
At first I thought that just the battery died, but when I received the replacement I noticed that things are stil the same.
I put my roomba on the charger and I can see in the serial debug output that the battery is charging:
bat: min 2 sec 46 mV 306 mA 305 tenths-deg-C 245 mAH 7 state 3
But after the charging is done, and when I then press the cleaning button, or move the roomba away from the dock, immedialty the message "Please charge roomba" appears....
I then started the auto self-test the the roomba as enough power to perform all the tests easily - so the battery is obviously charged!!
In the selfest I noticed, the following:
So obviously something is wrong with the battery voltage sensor!!!
SUMMARY: (battery-voltage-ok?) FAIL
SUMMARY: (battery-temperature-ok?) untested
SUMMARY: (baseline-current-ok?) PASS mA -243 min -270 max -220 mV 278 degrees-C 22
Does anyone has an idea where I could start analysing the circuite to find the faulty part?
(In another thread I noticed that it might could be U3 MC34036 ... could that be the root cause for such a problem?)
Any hint that could push me in the right direction would be really great!
Thank you so much in advance for your help!