My helli is pretty big, I am using four 10mm leds, two white, one front, one back, one red left, one green right, I have a on board battery 5V, but I can put on a small axillary battery 12V, if I have to, I would like them to flash all that the same time, But this is no ordinary on–off–on–off flasher. I would like a "heart-beat" effect, blip-blip, pause, blip-blip, pause. for a double-blink roughly every second.
the spec for the leds are
Red X1 : Forward Voltage : 1.9v - 2.1v
Forward Current : 20mA
White X2 Forward Voltage : 3.2v - 3.6v
Forward Current : 20mA
Green X1 Forward Voltage : 3.2v - 3.6v
Forward Current : 20mA
does any one have plans to make this work? or a place where I can buy a board already made?
Thanks
John
2006-12-07 07:10:56 · 1 answers · asked by Anonymous in Science & Mathematics ➔ Engineering
Don't have time to muck with this at the moment, but I think you just need a slow oscillator and a counter. By hooking the output to a second or third digit in a binary counter, I think you can get close to the pattern you are looking for.
Check with the nerds at your local Radio Shack - they live for this stuff....
2006-12-07 13:02:45 · answer #1 · answered by www.HaysEngineering.com 4 · 0⤊ 0⤋