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If you have ever tried to do serial communications or anything timing specfic on a Attiny with the internal oscillator, you know that you need to tune the microcontroller before it will work. Tuning can be a little tricky to get the code and wiring hooked up. So I decided to simplify it and make it a snap.
Introducing the TinyISP-Tuner! It can program your Attiny with the Arduino IDE using TinyISP that is configured for tuning. The TinyTuner2 sketch receives a 16ms pulse from the on board Atmega328p (TinyISP) and saves the oscillator adjustment value to EEPROM. Then all you have to do is add some code to your setup() function to load the value and set it in the register.
Supports ATtiny84/44/24, ATtiny85/45/25, and ATtiny2313/4313.
Requires some easy soldering with through hole parts.
Guide is on http://friedcircuits.us/docs/tinyisp-tuner/
Requires FTDI cable or adapter.
Oliver | Oct. 19, 2014
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