Hi,
I have made some custom pcbs with atmega328P chip and using a Nano at ISP but I am struggling to get the bootloader on.
I have installed MiniCore into my IDE and tried burning a bootloader onto the blank chips and i get the error
avrdude main() error: expected signature for ATmega328P is 1E 95 0F
The verbose output is below along with my circuit. After some searching, it seems if the device signiture is listed as device signature = 0xffffff, that suggests its not detecting the chip and maybe I have connection problems but I think my circuit is correct.
Can anyone spot something I have not?
Kind regards
avrdude: Version 7.2-arduino.1
Copyright the AVRDUDE authors;
see https://github.com/avrdudes/avrdude/blob/main/AUTHORS
System wide configuration file is /home/brian/.arduino15/packages/MiniCore/hardware/avr/3.0.1/avrdude.conf
User configuration file is /home/brian/.avrduderc
User configuration file does not exist or is not a regular file, skipping
Using Port : /dev/ttyUSB0
Using Programmer : stk500v1
Overriding Baud Rate : 19200
AVR Part : ATmega328P
Chip Erase delay : 9000 us
PAGEL : PD7
BS2 : PC2
RESET disposition : possible i/o
RETRY pulse : SCK
Serial program mode : yes
Parallel program mode : yes
Timeout : 200
StabDelay : 100
CmdexeDelay : 25
SyncLoops : 32
PollIndex : 3
PollValue : 0x53
Memory Detail :
Block Poll Page Polled
Memory Type Alias Mode Delay Size Indx Paged Size Size #Pages MinW MaxW ReadBack
----------- -------- ---- ----- ----- ---- ------ ------ ---- ------ ----- ----- ---------
eeprom 65 20 4 0 no 1024 4 0 3600 3600 0x00 0x00
flash 65 10 128 0 yes 32768 128 256 4500 4500 0x00 0x00
lfuse 0 0 0 0 no 1 1 0 4500 4500 0x00 0x00
hfuse 0 0 0 0 no 1 1 0 4500 4500 0x00 0x00
efuse 0 0 0 0 no 1 1 0 4500 4500 0x00 0x00
lock 0 0 0 0 no 1 1 0 4500 4500 0x00 0x00
signature 0 0 0 0 no 3 1 0 0 0 0x00 0x00
calibration 0 0 0 0 no 1 1 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
avrdude: device signature = 0xffffff (probably .xmega) (retrying)
avrdude: device signature = 0xffffff (probably .xmega) (retrying)
avrdude: device signature = 0xffffff (probably .xmega)
avrdude main() error: Yikes! Invalid device signature.
avrdude main() error: expected signature for ATmega328P is 1E 95 0F
Double check connections and try again, or use -F to override
this check.
avrdude done. Thank you.
Failed chip erase: uploading error: exit status 1