Fallingwater
Flashlight Enthusiast
I got two of these, and was quite disappointed by the batteries they use.
Each pointer is powered by three tiny button cells (no doubt meant for powering watches) that are completely inadequate at providing the constant 30ma or so the diode needs.
I got the lasers to play with my cat, so I need long battery life.
A solution had to be found.
I had a 720mah LiIon battery sitting around, from a Nokia phone that decided it had lived long enough. So I dismantled the casing, ripped the cell out and connected it to a clip-on connector.
I also dremeled off the outer casing of the pointer, which left me with the diode and the tiny board with the switch.
Some soldering, taping and gluing later, I have this:
The AA cell is for scale. The small pointer is the untouched one; on its right sits the other pointer's module and switch, hot-glued on top of the flat LiIon cell. It's connected to it with a clip-on connector, so that I can recharge the cell without having to redo the wiring every time.
The tiny button cell on the right is just there to show how the unmodified pointers are powered.
Ugly? Sure, but my cat doesn't care.
Why yes, my name is Dr. Frankenstein, why do you ask?
Each pointer is powered by three tiny button cells (no doubt meant for powering watches) that are completely inadequate at providing the constant 30ma or so the diode needs.
I got the lasers to play with my cat, so I need long battery life.
A solution had to be found.
I had a 720mah LiIon battery sitting around, from a Nokia phone that decided it had lived long enough. So I dismantled the casing, ripped the cell out and connected it to a clip-on connector.
I also dremeled off the outer casing of the pointer, which left me with the diode and the tiny board with the switch.
Some soldering, taping and gluing later, I have this:
The AA cell is for scale. The small pointer is the untouched one; on its right sits the other pointer's module and switch, hot-glued on top of the flat LiIon cell. It's connected to it with a clip-on connector, so that I can recharge the cell without having to redo the wiring every time.
The tiny button cell on the right is just there to show how the unmodified pointers are powered.
Ugly? Sure, but my cat doesn't care.
Why yes, my name is Dr. Frankenstein, why do you ask?
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