T^2 is a small and simple camera timer.  Based on the ever popular ATTINY85, this design only uses 5 components.  It is designed with a 2.5 mm male stereo plug to connect to a compatible camera.  I am using a Canon T1i Rebel to attach the timer to.  

I originally bought a camera timer off Amazon that was pretty cheap, about 15$.  I decided it had a lot of features I didn't want such as photo count, delay start, ect... 

So why not make a much simpler device that is smaller, more efficient, open source and made by myself!

With the amazing technology as employed here, this device can run for up to 200 hours (with an average current draw of 2 mAh).

Step 1: Components

For this projects most of the components can be found at RadioShack or Sparkfun.

1. ATTINY85 microcontroller
2. DIP Sockets Solder Tail - 8-Pin 
3. Reed Switch 5V/1A
4. Polymer Lithium Ion Battery - 400mAh
5. 4 Position DIP switch
6. 2.5 mm Male Stereo Cable (can be found on ebay and spliced)
7. Universal Component PC Board
8. Soldering Equipment
9. Arduino for programming

I was able to find everything for less than $20 and some were even reused parts!

About This Instructable




More by akcarl:Simple Hydroponic System Tiny Timer (T^2 for short) Beat Sync 
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