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October 7, 2014
about 7 years ago
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...