Instructables

Hacking an Arduino ISP Shield for AtTiny45 / AtTiny85

Step 2: Wiring


You will need to solder five small wires on the bottom of the Arduino ISP Shield. 

Flip the board over and locate pin 1 of the ZIF socket.  This is the one nearest the lever switch, and will be at the top-right when the board is flipped over (component side down).  it's handy to mark this pin.

The diagram show the wring from the top, but the picture of the board shows what it will look like when you are done.

Connect Pin 4 to Pin 8 - this is the ground connection.
Connect Pin 28 to Pin 20 - this is the Vcc (+5 Volts)
Connect Pin 27 to Pin 19  - SCK - Serial Clock
Connect Pin 26 to Pin 18 - MISO - Serial Out
Connect Pin 25 to Pin 17 - MOSI - Serial In

Pin 1 - RESET is already connected on the board so we don't need to touch that.

Use a multimeter to check the connections - it is easy to short out adjacent pins as they are only 1/10" apart.
 
Remove these adsRemove these ads by Signing Up
This is so much simpler than what I came up with: http://www.flickr.com/photos/heyvikram/sets/72157635589697575/with/9740290024/
Wish I had googled it first... :-)