I have purchased a Velleman-kit (K6200) which offers "0 to 60 hour start/stop timer". It is really excellent for the requirement of long time delays. I will do significant modifications to use it as a intervalometer for my Panasonic FZ20 camera. One easy modification is to convert the output to a monostable, relatively short, pulse. If you require my current schematic I will send it. What I need is a method of calibrating long delays - like 1 hour to 24 hours. I have in mind to do something like a lap stopwatch, but triggered from an external source. I can write good VBA programs, but need assistance with a method of triggering the timer function. Can someone tell me how to trap a simple level change event from any of the following: Standard USB port, Ethernet port, Microphone input port. My laptop does NOT have serial RS232 or parallel printer ports.Hi all,
I would like to build a timer that will count for about a day (24 hours) and then would trigger a relay for 1 minute. Thoughts that I make get me towards a PIC micro-controller (maybe series PIC10Fxx) but my programming skills are not the best.
Could you suggest any other way of doing such a thing?
Many thanks for your time!
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