KAP Timing Circuit

[deek]

I saw the article in my latest issue of MAKE about using a disposable digital camera and a 555 timer circuit to take pictures. I am currently working with a group to put a payload on a weather balloon and I want to hook up a disposable digital camera (similar to the one in the article). I figured out what contacts I need to short in order to turn on the camera and take a picture but for the life of me I cannot seem to get the example circuit to work.

The launch is on the 30th (have to rush it because funding didn't go through) Any help would be great.

[adafruit]

if you want help, you'll have to be more specific about what isnt working.

[deek]

If I use a low resistance(1K) the light will blink but as soon as I try to raise the resistance to get the period where I want (One picture ever 3min) it will not work at all.

Any thoughts?

[adafruit]

WHICH resistance? be more specific!

[deek]

I am using the same resistance in all three resistors. Anytime I go over 3K the circuit will not light up no matter how long I wait. When I check to see if there is a voltage across the capactors at a resistance over 3K it is 0.

I am going to check with one of my professors to see if we can figure out what the problem is and if not I will try and post a better decription of the problem.