We will be closed on November 25, 2021 and November 26, 2021 in observance of the Thanksgiving holiday. We will resume normal operations on November 29, 2021. Wishing you a safe and happy holiday from all your friends at SparkFun!


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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.