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USB rechargeable torch
Li-ion powered torch USB rechargeableGadget
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I had these parts (led, lens, IC) from some time and I decided to put them to good use. I designed a small PCB for the charger and used a 2W resistor to limit the current through led to about 100mA. Glued everything together.
Materials and methods
- Cree XP-G LED
- Ledil lens
- MAX 1555 single Li-Ion charging IC
- mini USB connector
- 18650 Li-Ion cell
- rocker switch
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