OK, so I'm doing my own homemade arduino setup. I'm burning the bootloader onto ATmega8s with my STK500 & then using the Arduino software to reprogram homemade boards. My homemade boards consist of the ATmega8, a resonator, filtering cap & RS232 chip attached to a serial port. My problem is that once I begin to attach additional hardware to my homemade boards - ie: LEDs & sensors - the bootloader seems to randomly get corrupted or erased & I need to periodically but unpredictably reburn the bootloader before I can use the Arduino software to program my chips. Does anyone have any idea what might be going on here?
I should mention that the homemade boards are being used by novices & all sorts of funky things are happening - little shorts, frequent resets, etc.
Thanks for your insight & help!!