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!


Receive a free SparkFun USB Thumb Drive with every order this weekend. Details.



Member Since: October 7, 2014

Country: Canada

  • Bought the kit, loved it. Very cool build for a novice like me, excellent soldering practice. Crazy bright display though, and here's my saga of reprogramming to get it dimmer, and just to learn how. Keep in mind, N00b here... - Read the comments below - Bought a Pocket AVR Programmer - Installed the signed drivers for Win 8 - soldered a 3X2 pinout onto the Clockit - Figured out that the cable goes the other way when you hook the Programmer to the Clockit. The cable will lie across the IC when plugged in - Downloaded AVRDude - Downloaded AVR Studio - Set up AVR Studio to use AVR Dude and the Pocket Programmer, like here ( http://www.crash-bang.com/using-usbtiny-with-atmelstudio/ ) - Download the file above clockit-v11.c and open it in AVR Studio - Select-All-Copy the entire contents of the file and Paste into a new AVR Studio Project like here ( http://www.avr-tutorials.com/avr-studio-6/creating-new-avr-c-project-avr-studio-6 ) - Change lines 103 and 145 from ISR (SIG_OVERFLOW1) to ISR (TIMER1_OVF_vect) , like here, bottom of page ( https://forum.sparkfun.com/viewtopic.php?f=14&t=32059&p=142674&hilit=clockit+atmega328p#p142674 ) - Change the two instances of bright_level from 50 to 1 - Build the Hex file like here ( http://www.avr-tutorials.com/avr-studio-6/generating-hex-file-avr-studio-6) - In AVR Studio use the Pocket Programmer/AVRDude tool we set up above to flash the hex to the Clockit. - Find the display OK for a kids room or as a night light, but still too bright for my old eyes, so put 4 layers of TuckTape over the display also...