Hey guys, New to this excellent forum you have here. I feel that this place would be the most ideal place to ask electronics related questions to a project that I have going on.
I will describe what I am trying to do:
I am attempting to design (with your help), single or multiple Infrared LED(s), lit by two AA sized batteries. I wish for this setup to be very bright, very efficient (85% or better) and have constant brightness with varying battery capacity down to 1.6 volts and to produce a single visible "spot" to be able to be picked up by a sensor no less than 15 feet away and at a very wide viewing angle.
My wishes:
1. I wish for a single on/off momentary switch with a small green LED nearby that depicts "On" state. Obviously id like this to consume as little power as possible
2. I wish for a "on time" selection button so that the device automagically powers off after a certain period time of 2, 4, or 6 hours, indicated by 3 low power consuming LED's marked 2, 4, or 6 respectively. Only one LED to be lit at a time. Color could vary but Red preferred.
3. A "Low battery" flashing LED, at about 1 flash for 1 second every 2 seconds, that kicks on at about 25% battery life for two rechargeable NiMh batteries while the device is "on". I'm guessing this is at about 2.2 volts?
4. Automatic shut-off at about 1.6 volts to completely deplete two rechargeable NiMh batteries and fully use their capacity and a cutoff LED that indicates that it is in cutoff mode whitle the power button is pressed.
I also wish to use cheap, off the shelf items that can be readily purchased from basically any electronics shop.
Seems super complicated and a bit over my head, but with your help, I can accomplish this goal. I know only what google can teach me about electronics. I can light a single LED with a resistor no problem. To have it have all the features, that's what I need help with.
I will describe what I am trying to do:
I am attempting to design (with your help), single or multiple Infrared LED(s), lit by two AA sized batteries. I wish for this setup to be very bright, very efficient (85% or better) and have constant brightness with varying battery capacity down to 1.6 volts and to produce a single visible "spot" to be able to be picked up by a sensor no less than 15 feet away and at a very wide viewing angle.
My wishes:
1. I wish for a single on/off momentary switch with a small green LED nearby that depicts "On" state. Obviously id like this to consume as little power as possible
2. I wish for a "on time" selection button so that the device automagically powers off after a certain period time of 2, 4, or 6 hours, indicated by 3 low power consuming LED's marked 2, 4, or 6 respectively. Only one LED to be lit at a time. Color could vary but Red preferred.
3. A "Low battery" flashing LED, at about 1 flash for 1 second every 2 seconds, that kicks on at about 25% battery life for two rechargeable NiMh batteries while the device is "on". I'm guessing this is at about 2.2 volts?
4. Automatic shut-off at about 1.6 volts to completely deplete two rechargeable NiMh batteries and fully use their capacity and a cutoff LED that indicates that it is in cutoff mode whitle the power button is pressed.
I also wish to use cheap, off the shelf items that can be readily purchased from basically any electronics shop.
Seems super complicated and a bit over my head, but with your help, I can accomplish this goal. I know only what google can teach me about electronics. I can light a single LED with a resistor no problem. To have it have all the features, that's what I need help with.
