Hi,
I'm looking to make a very simple device, nothing more than just a puck sized thing with a flashing LED on it.
The intention is to help my granddad who now has difficulty remembering where he's put his keys etc.
I've not done any electronics at school so I have a bit less than basic knowledge, but I expect this little project
should be easy enough. From what I've read on the www it seems that some LED's now have the circuit that
controls the LED {the circuit that controls the flashing} is integrated, my question is...
Is that all that's needed, an LED with an IC connected to a battery ? but how do I chose the right 5mm LED ?
Other than that, it seems LED's work from a wide range of voltages, from 3v to 12v so I'm not sure what battery
voltage to use, or what mcd would be appropriate, it would need to be bright enough to be easily seen without
mesmerizing the cat.
Does that voltage tolerance mean that a 12v battery would last 4x longer than a 3v battery ?
Any help / advice would be appreciated.
Thanks,
Bob.
I'm looking to make a very simple device, nothing more than just a puck sized thing with a flashing LED on it.
The intention is to help my granddad who now has difficulty remembering where he's put his keys etc.
I've not done any electronics at school so I have a bit less than basic knowledge, but I expect this little project
should be easy enough. From what I've read on the www it seems that some LED's now have the circuit that
controls the LED {the circuit that controls the flashing} is integrated, my question is...
Is that all that's needed, an LED with an IC connected to a battery ? but how do I chose the right 5mm LED ?
Other than that, it seems LED's work from a wide range of voltages, from 3v to 12v so I'm not sure what battery
voltage to use, or what mcd would be appropriate, it would need to be bright enough to be easily seen without
mesmerizing the cat.
Does that voltage tolerance mean that a 12v battery would last 4x longer than a 3v battery ?
Any help / advice would be appreciated.
Thanks,
Bob.