I have a Borderless Electronics Leonardo, which is a clone but until today worked fine for me.
I have an old project that I tried to rebuild and upload, but failed. I went back to upload the "blink LED 13" sketch as a test, and not even that is being uploaded, failures are changing and piling.
Started with online editor, switched to local one (1.8.11), Ubuntu OS, running IDE as root (was unsure just the dialout group was going to be enough to access the ports). Board is correctly set to "Arduino Leonardo". Enabled verbose upload logging for extra info.
Initially it simply wouldn't ever finish the upload, and with the log it seemed to be because of signature mismatch:
avrdude: Version 6.3-20190619
Copyright (c) 2000-2005 Brian Dean, http://www.bdmicro.com/
Copyright (c) 2007-2014 Joerg Wunsch
System wide configuration file is "/home/user/Downloads/arduino-1.8.11-linux64/arduino-1.8.11/hardware/tools/avr/etc/avrdude.conf"
User configuration file is "/home/user/.avrduderc"
User configuration file does not exist or is not a regular file, skipping
Using Port : /dev/ttyACM1
Using Programmer : avr109
Overriding Baud Rate : 57600
AVR Part : ATmega32U4
Chip Erase delay : 9000 us
PAGEL : PD7
BS2 : PA0
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 9000 9000 0x00 0x00
flash 65 6 128 0 yes 32768 128 256 4500 4500 0x00 0x00
lfuse 0 0 0 0 no 1 0 0 9000 9000 0x00 0x00
hfuse 0 0 0 0 no 1 0 0 9000 9000 0x00 0x00
efuse 0 0 0 0 no 1 0 0 9000 9000 0x00 0x00
lock 0 0 0 0 no 1 0 0 9000 9000 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 : butterfly
Description : Atmel AppNote AVR109 Boot Loader
Connecting to programmer: .
Found programmer: Id = "CATERIN"; type = S
Software Version = 1.0; No Hardware Version given.
Programmer supports auto addr increment.
Programmer supports buffered memory access with buffersize=128 bytes.
Programmer supports the following devices:
Device code: 0x44
avrdude: devcode selected: 0x44
avrdude: AVR device initialized and ready to accept instructions
Reading | ################################################## | 100% 3.65s
avrdude: Device signature = 0x0d3f0d
avrdude: Expected signature for ATmega32U4 is 1E 95 87
Double check chip, or use -F to override this check.
Now when I plug the board its TTY port stays in the menu for as long as the leds blink, once it just stays solid ON and nothing else, it vanishes. I'm trying to start upload and then plug the board, which is then recognized but many times it just fails to proceed. When it seems to go further, it still fails (log in the next message, because message is beyond size limit).
How can I troubleshoot this?
Thanks!