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  • $0.1 Dusk to Dawn Switch Low Cost Simple Dusk to Dawn Switch Dark Sensing Light Automatic Lights

    you probably need 100k instead of 1k resistor (1W) or maybe switching the position of resistor and ldr. Or maybe both. 5-10k ldr is good. Don't go for higher value unless you want to change the 1K resistor to something more than 1M. LDR07 (7mm) is awesome!If all of the above did not helped, maybe you connected something the wrong way. Or damaged a component while soldering. Prefboards are cheap, why not using that instead soldering everything in top of each other?

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  • Simple Mini Dusk to Dawn Switch for 220v AC

    About LDR: what is the part number? Or, if you don't know that, then what's its rated resistance for daytime?I tried with 100k/200k LDR and instead 100k I used 2M - because with 100k the led was on all the time - but even then he was not much sensitive. Are you using 10K LDR or even smaller?

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  • Simple Mini Dusk to Dawn Switch for 220v AC

    Here you go. For you and for whoever need it.

    I have a question: where do you put the photoresistor in that canister? As far as I tested, if you put a photoresistor into something, it will not work as it should because the canister is not letting enough sunlight in. Or maybe it's different with translucent film canister?

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  • REUSE YOUR OLD LAPTOP BATTERY TO MAKE a POWER BANK

    You can buy a charger that can take more than 1 battery to charge. Or just charge them individually

    Good job! Now you have a fake powerbank that is actually as good as the original one. Nice camouflage! :)

    If you have the casing from where you got the batteries, than you can calculate how many amps they have. Typically, they have from 2 to 2.2amp per cell. Voltage is always 3.6-3.7.Since you revived them, there is no tell how many amps they can hold now. Maybe they can hold the same as before or less. Are you charging them with proper charger, i mean charger that was made for charging li-ion?

    You mean, a complete powerbank with batteries cost less than a dollar? Good luck drawing out more than 1amp out from it, because it has fake batteries that are hollow inside and can't even go as high as 2.2amp per cell. Buy them, cut them, and see if I was wrong :)With the above hack, you get real batteries, which would cost you around 3-4 bucks per cell, for a lot cheaper. Laptop batteries are the real deal unless you buy a counterfeit, but that one won't last long anyway.Noname powerbank from China - good choice if you want to test your luck against fire and explosion in your own home, or test your device against fire or explosion. :) Great price for "care free" life! :)

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