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USB LED Lamp Circuit | 5v USB Light for Laptop
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simple desktop lamp circuit
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4v DC LED Emergency Light With 3.7v TP4056 Li-Ion Battery - 5v Micro USB charger | POWER GEN - YouTube
L1: Turning on an LED - Physical Computing
USB LED Lamp Circuit | 5v USB Light for Laptop
USB LED Lamp Circuit | 5v USB Light for Laptop
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Creating a simple 1.5V LED Flasher circuit | ElecCircuit.com
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