I have a bunch of Protosnap Pro Mini (retired: https://www.sparkfun.com/products/retired/10889) that have worked for 8+yr, including this past spring. I just went to try one and am getting errors where the IDE refuses to upload. I tried with an Arduino Leonard and it worked. There are hints about an Old Bootloader on some youtube but nothing about the Protosnap in particular.
I know it is a retired product, but these have been terrific intro tools and I would like to continue using the few i have left.
Using the Arduino 1.8.19 on my Win10 machine, i get the following (abreviated) output when uploading Blink:
Sketch uses 936 bytes (3%) of program storage space. Maximum is 30720 bytes.
Global variables use 9 bytes (0%) of dynamic memory, leaving 2039 bytes for local variables. Maximum is 2048 bytes.
C:\Users\jerry\AppData\Local\Arduino15\packages\arduino\tools\avrdude\6.3.0-arduino17/bin/avrdude -CC:\Users\jerry\AppData\Local\Arduino15\packages\arduino\tools\avrdude\6.3.0-arduino17/etc/avrdude.conf -v -patmega328p -carduino -PCOM7 -b57600 -D -Uflash:w:C:\Users\jerry\AppData\Local\Temp\arduino_build_573119/Blink.ino.hex:i
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 “C:\Users\jerry\AppData\Local\Arduino15\packages\arduino\tools\avrdude\6.3.0-arduino17/etc/avrdude.conf”
Using Port : COM7
Using Programmer : arduino
Overriding Baud Rate : 57600
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 1 of 10: not in sync: resp=0x33
(repeats 10x then times out)
using the Arduino IDE 2.1.1, i get basically the same stk_500 errors
Any idea what might have changed?
or how to fix this?