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  • DavidH303 commented on Ben Finio's instructable Child's Toy Light Switch Box5 months ago
    Child's Toy Light Switch Box

    I ended up using different LEDs so I needed different voltages/currents, but I managed to take three of the 100 ohm resistors and make a 150 ohm resistor by putting two of them in parallel with the third connected in series (1/R = 1/R1 + 1/R2). I ended up understanding one of the biggest issues I had with learning electronics (why resistors are always needed) as a result of this project, so thank you very much for posting this!

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