I have made a camera timer to do pretty much exactly that

take a look at
http://www.robowars.org/teams/plan-b/Doonside%202003-06-28/

if you need help feel free to email me

grooveee
place the atsymbol here
optushome
.com
.au

MUHAHAAH choke on that spambots

some general advice
find out how the camera triggers
ie for the camera I used it is active low inputs on its switches so
triggering was easy.

if your going to get a chip the 16F628A is a good one to get, the internal
oscilator is a handy thing and good enough for what you want to do there
(though all mine run at 20Mhz cos its just more fun ;->) and the built in
USART makes debuging easy

only experiment on and fly with a camera you dont mind recovering with a
shovel.

take a look at JAL it makes programming pretty easy for most things.
-----Original Message-----
From: pic microcontroller discussion list
[mailto:PICLIST@MITVMA.MIT.EDU]On Behalf Of Mike nicholas
Sent: Tuesday, April 20, 2004 10:08 AM
To: PICLIST@MITVMA.MIT.EDU
Subject: [PIC:]Rocket camera timer


I'm currently building a mid sized camera rocket using a Kodak F-350 aps
camera, it has an electronic shutter. I will be using two switches the first
will engage very shortly after ignition and the second will make momentary
contact when the chute opens.

  The first switch will start a program where a 1/2 second pulse will be
triggered every 1.5 seconds for a total of 5 pulses then when the second
switch engages the first program is bypassed and a second program starts a
1/2 second pulse every 5 seconds for a total of 5 pulses, then the chip
shuts down regardless of any input.

I'm very new with programming and have only programmed one pic with the
blink program and it didnt work once put in the circuit, I have a few
pic16F84A and have some 12F675 comming in soon. I have quite a bit of
electronic knowledge, but programming is greek to me.

Anything that would help would be great
Mike

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