i'm studying electronic civil engineer, but they don't teach me the part of "making" your own programmer, so i am learning it be my own.
The problem that i have with the SCHAER+ programmer is that when is connect both diodes at the 7812, the output is 12,8V and a weird thing happens,... the output of the 7805 is 6,4 V (no idea why !!).
And when i build it (the last time) i couldn't erase the PIC (only program a new erased PIC). The voltage at that moment was 12,7... is that enough for erase a PIC??...