I need to "get rid" of the arduino shield and use a standalone controller due to space limitations on my PCB.
I got an ATMega328P-PU (the same one as the Arduino UNO r3) with pre-mounted Arduino bootloader (original one, bought in a local store). The chip works, I tried to wire it on a breadboard, plug the RX, TX and RESET pins to the original arduino UNO r3 in order to upload sketches and everything works.
The issue is when I try to use the chip alone, it does nothing. My sketch doesn't work, even if it was uploaded successfully. I also tried removing the chip on my Arduino UNO r3 and replacing it with my new one to upload sketches, everything works but when I remove the chip and wire it on a breadboard the sketch just doesn't work.
I read that this can be due to the fact that I need a 16MHz oscillator and two condensers in order to make it work. I don't have those (and I don't have the space on my final PCB for those compoenents) so I'm trying to work without them.
My understanding was that I need to burn a bootloader to the chip which will tell it to use the internal crystal (the 8MHz one) instead of the external 16MHz one. I followed this tutorial: http://www.instructables.com/id/Atmega-Standalone-Running-without-crystal-oscillat/?ALLSTEPS
I can't burn the bootloader, as I get "Yikes! Invalid device signature 0x000000".
This is the full output I get:
C:\arduino 1.6.13\hardware\tools\avr/bin/avrdude -CC:\arduino 1.6.13\hardware\tools\avr/etc/avrdude.conf -v -patmega328p -cstk500v1 -PCOM3 -b19200 -e -Ulock:w:0x3F:m -Uefuse:w:0x05:m -Uhfuse:w:0xDA:m -Ulfuse:w:0xE2:m
avrdude: Version 6.3, compiled on Sep 12 2016 at 17:24:16
Copyright (c) 2000-2005 Brian Dean, http://www.bdmicro.com/
Copyright (c) 2007-2014 Joerg Wunsch
System wide configuration file is "C:\arduino 1.6.13\hardware\tools\avr/etc/avrdude.conf"
Using Port : COM3
Using Programmer : stk500v1
Overriding Baud Rate : 19200
AVR Part : ATmega328P
Chip Erase delay : 9000 us
PAGEL : PD7
BS2 : PC2
RESET disposition : dedicated
RETRY pulse : SCK
serial program mode : yes
parallel program mode : yes
Timeout : 200
StabDelay : 100
CmdexeDelay : 25
SyncLoops : 32
ByteDelay : 0
PollIndex : 3
PollValue : 0x53
Memory Detail :
Block Poll Page Polled
Memory Type Mode Delay Size Indx Paged Size Size #Pages MinW MaxW ReadBack
----------- ---- ----- ----- ---- ------ ------ ---- ------ ----- ----- ---------
eeprom 65 20 4 0 no 1024 4 0 3600 3600 0xff 0xff
flash 65 6 128 0 yes 32768 128 256 4500 4500 0xff 0xff
lfuse 0 0 0 0 no 1 0 0 4500 4500 0x00 0x00
hfuse 0 0 0 0 no 1 0 0 4500 4500 0x00 0x00
efuse 0 0 0 0 no 1 0 0 4500 4500 0x00 0x00
lock 0 0 0 0 no 1 0 0 4500 4500 0x00 0x00
calibration 0 0 0 0 no 1 0 0 0 0 0x00 0x00
signature 0 0 0 0 no 3 0 0 0 0 0x00 0x00
Programmer Type : STK500
Description : Atmel STK500 Version 1.x firmware
Hardware Version: 2
Firmware Version: 1.18
Topcard : Unknown
Vtarget : 0.0 V
Varef : 0.0 V
Oscillator : Off
SCK period : 0.1 us
avrdude: AVR device initialized and ready to accept instructions
Reading | ################################################## | 100% 0.02s
avrdude: Device signature = 0x000000 (retrying)
Reading | ################################################## | 100% 0.02s
avrdude: Device signature = 0x000000 (retrying)
Error while burning bootloader.
Reading | ################################################## | 100% 0.02s
avrdude: Device signature = 0x000000
avrdude: Yikes! Invalid device signature.
Double check connections and try again, or use -F to override
this check.
avrdude done. Thank you.
I double-checked the wires, they are properly connected.
I also burnt the "ArduinoISP" sketch on the UNO shield before trying to burn the bootloader on the new chip.
Is someone able to help me figure this out?
Thank you
