Nitz76 wrote:Do you know any issues or particularities with atmega328p bootloader versus atmega8 ?
As I stated in viewtopic.php?f=8&t=4022&start=15#p25754, I even provide precompiled hexfiles for VUSB bootloader with ATmega328p.
One single remark I may have to add:
ATmega8 (the smaller one) is the most EMI robust beast I have ever seen. What a glorious chip!
However ATmega328p (the larger one) isn't so lucky. This thing is really sensitive to even smallest EMI.
So perhaps your prolem with ATmega328p is (most likely) EMI related.
Tro to use some 1uF and 0.1uF filter capacitors very near the controller between Vcc and GND.
If you want to further improve EMI tolerance, use 0.1uF bypass capacitors to Vcc and GND for all (used) PINs.
So long, vouvoume