Hi all, I have been trying to burn the bootloader on an ATmega328P-AU with a custom made pcb but with no success. I have made the following connections:
Arduino Uno slave Atmega328P-AU 1. +5V +5V 2. GND GND 3. pin 13 SCK 4. pin 12 MISO 5. pin 11 MOSI 6. pin 10 RESET 7. pin 7 LED-HEARTBEAT 8. pin 6 LED-ERROR 9. pin 5 LED-PROGRAMMING 0.1uF cap from VCC to GND 0.1uF cap from AVCC to GND 0.1uF cap from AREF to GND 16MHz Crystal from XTAL1 to XTAL2 18-22pf cap from XTAL1 to GND 18-22pf cap from XTAL2 to GND 10K resistor from VCC to RESET
Have I missed anything or wired something wrong ? Could you tell me how to burn the bootloader ? So far I have tried the Arduino ISP (from the examples) and Nick Gammon's bootloader and got the following errors.
Arduino ISP error : avrdude: Yikes! Invalid device signature. ** Double check connections and try again, or use -F to override** ** this check.**
Atmega_Board_Programmer error : avrdude: stk500_getsync(): not in sync: resp=0x00
Any help is greatly appreciated (please in simple English :) )! Thanks in advance, Alex