Automating button presses with timed delay

Thread Starter

ixalon

Joined Jan 10, 2011
1
Hi everyone

I'm trying to automate the start up of an old DLSR I've stripped down. To get it to start up in 'PC control' mode without user-interaction.

What's needed is for 2 button presses to be simulated (I've tested that I can replace the buttons with simple momentary push buttons) i.e:

  • a circuit that waits around 5 seconds from the time power is applied
  • closes the circuit of the first button for 0.5 seconds
  • pauses for 0.5 seconds
  • closes the circuit of the second button for 0.5 seconds
  • either stops or repeats (further button presses are ignored)
Does this level of complexity require/benefit-from a microcontroller, or can I achieve it with a couple of 555s, transistors, capacitors, resistors and say a 74HC4066?

Hoping someone can help!
Chris
 
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