SparkFun Electronics will be closed in observance of memorial day on Monday, May 29th. We will resume normal business hours on Tuesday, May 30th. Any orders placed after 2pm Mountain Time on Friday, May 26th will process and ship out on Tuesday, May 30th.



Member Since: August 4, 2011

Country: United States

  • I was able to reprogram using a TinyISP. The trick, suggested by my 9 year old, son was to flip the 6 pin connector on the ISP so that you reverse the output pinout. We burned a bootloader and then blink uploaded no problem. The suggestion from above to press a header into the pins worked great! You have to have the Twinkle powered up and not have the 5V jumper in place.