Hello Axel,
I have also 3 ATU-100 kits and tried to read the EEPROM content with my Pickit3.
Impossible, the program was read protected!
Most probably yours will also be protected.?
Related to Arduino-based PIC-programmers:
I was also looking for that,? but the only one I found, was limited to old PICs (e.g. working for PIC16F628). It does not support the PIC16F1938 used in the ATU-100.
BTW: This was also discussed some time ago in the ATU-100 group.?
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73, DB2OO -Joerg