In this instructable I will show you how to program AT Tiny chips as they are cheaper than arduino's and they are much smaller.
Step 1: Parts And Tools
Here are the parts and tools needed to make this project:
At tiny 85 or 45
Computer with arduino IDE
Step 2: Get At Tiny Files
Download these files:
This is for Mac:
Go to : go : documents: open the arduino folder: make a folder called: hardware:open hardware folder: drag the at tiny files into the folder.
This should work as it worked for me.
Step 3: Wire Circuit
Connect the arduino to the attiny:
Arduino 5 volts to ATtiny pin 8.
Arduino ground to ATtiny pin 4.
Arduino pin 10 to ATtiny pin 1.
Arduino pin 11 to ATtiny pin 5.
Arduino pin 12 to ATtiny pin 6.
Arduino pin 13 to ATtiny pin 7.
Step 4: Program Arduino
Select arduinoISP sketch for on the examples menu then upload the sketch to the arduino.
Now your arduino can program other chips
Most people use a 10 uf capacitor but I found that I didn't need it. When you upload the ISP code make sure that that you have selected AVRISP mkll as the programmer under tools --> programmer.
Step 5: Upload Sketch
Upload the sketch that you want on the at tiny but you will get an error if your code contains any serial commands so just comment them out. Make sure to change the arduino board to the at tiny 85 1 MHz or whatever your chip is. Make sure that the programmer is "Arduino as ISP".