Sunday, November 25, 2012

ATtiny Breakout/Programmer

Introducing the eeZee Tiny

To make it easier to prototype ATtiny-based circuits like my lost model alarm I made a breakout / programmer board for ATtiny13 pin-compatible chips. I call it the eeZee Tiny. It's a surface mount version of an existing open source project.

(The list of compatible chips includes the ATtiny11, ATtiny12, ATtiny13, ATtiny13A, ATtiny25, ATtiny45, ATtiny85)

The board has a 6-pin AVRISP header so I don't have to keep looking up pinouts, a reset switch and breadboard friendly header pins. Supply power to pins 4 and 8 and you're set.

I can either use the board to prototype the next project or embed them in projects permanently.

LED flashy test using ATtiny13A
I made a few extras in hopes that it'll help out others. They're on sale at Tindie at the moment and for Cyber Monday you can use coupon code 8F7CD17 to get 25% off the regular price.

Features:

  • Works with ATtiny13,13A, ATtiny25,45,85, ATtiny11, ATtiny12
  • Tiny 1-square-inch board
  • Perfect for breadboarding
  • 0.1uF and 10uF filtering capacitors pre-soldered
  • Compact AVRISP connector for easy programming
  • All 8 pins exposed for breadboarding
  • Reset switch and pull-up resistor included

Source

Here are the Eagle files and example code so you can make your own. I had my boards done by oshpark.com and they turned out great as always.
Parts list includes a standard 6mm square tactile switch with 4 pins, one 0603 0.1uF ceramic cap, a 1206 10uF tantalum, a 0603 1K resistor, an 8PDIP socket, a 2x3 pin header, and a 1x8 (or two 1x4) pin header.

Additional details here.

2 comments:

  1. So this really has nothing to do with the breakout, but why in the picture with the breadboard does the breadboard appear to be mounted on a PCB?

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  2. The only free breadboard I had was the one glued to my Basic Stamp 2 development board :)

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