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Gamasonic Solar Keychain Flashlight Toggle Mod
door cshapiro
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Gamasonic Solar Flashlight Toggle Switch Mod
Charles Shapiro
17 Dec 2025
This is a modification of the Gamasonic solar-powered keychain
flashlight which replaces the original case and pushbutton switch with
a new case and a toggle switch. This makes it much more useful for
camping or power failures. After approximately a 2-hour charge in
full sun, the light should provide about 4 hours of reading-level
light. I turned one of these on at about 8 pm, and it was still
glowing enough to show distinct spots on my hand at 7:30 the next morning.
A crate of over 500 of these flashlights turned up at my local
makerspace. None of them would light, but we soon found that the only
defect was the pushbutton. The solar cells, batteries, and LEDs all
worked fine.
Materials:
3D printed box and lid (STL s included ) I printed mine in Natural PLA
with a 0.6mm nozzle on a Prusa MK4S.
Subminiature panel mount SPDT toggle switch with 6 mm (1/4")
shaft. Adafruit sells this one ( https://www.adafruit
Charles Shapiro
17 Dec 2025
This is a modification of the Gamasonic solar-powered keychain
flashlight which replaces the original case and pushbutton switch with
a new case and a toggle switch. This makes it much more useful for
camping or power failures. After approximately a 2-hour charge in
full sun, the light should provide about 4 hours of reading-level
light. I turned one of these on at about 8 pm, and it was still
glowing enough to show distinct spots on my hand at 7:30 the next morning.
A crate of over 500 of these flashlights turned up at my local
makerspace. None of them would light, but we soon found that the only
defect was the pushbutton. The solar cells, batteries, and LEDs all
worked fine.
Materials:
3D printed box and lid (STL s included ) I printed mine in Natural PLA
with a 0.6mm nozzle on a Prusa MK4S.
Subminiature panel mount SPDT toggle switch with 6 mm (1/4")
shaft. Adafruit sells this one ( https://www.adafruit
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