Timeline for How to wire an LED light that turns on when potentiometer raised past a certain threshold?
Current License: CC BY-SA 4.0
12 events
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| Mar 1, 2021 at 12:59 | comment | added | AnalogKid | I've updated my answer. | |
| Mar 1, 2021 at 5:01 | history | edited | Null♦ | CC BY-SA 4.0 |
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| Feb 28, 2021 at 2:22 | comment | added | K H | 9V batteries are horrible other than for very specific low power applications. If you want to use disposable batteries, get a 6S AA battery pack and you'll have better power density and save a bunch of money. Output voltage range is the same. | |
| Feb 27, 2021 at 23:21 | history | edited | AbleMind | CC BY-SA 4.0 |
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| Feb 27, 2021 at 23:10 | answer | added | AnalogKid | timeline score: 1 | |
| Feb 27, 2021 at 23:02 | comment | added | AbleMind | Thanks Pete, you obviously know a lot! | |
| Feb 27, 2021 at 22:31 | comment | added | Peter Bennett | If you are going to show a circuit, please show a correct circuit. In the circuit you show, the pot has no effect - you have to connect the wiper to either end to make it have an effect on the motor current. Also, a normal small LED would not work as shown - polarity is wrong, and with correct polarity the LED would be destroyed by the motor current. | |
| Feb 27, 2021 at 22:23 | history | edited | AbleMind | CC BY-SA 4.0 |
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| Feb 27, 2021 at 21:41 | answer | added | hacktastical | timeline score: 1 | |
| Feb 27, 2021 at 21:40 | comment | added | Bimpelrekkie | If the fan has a "tacho" output, it is relatively easy to detect if it is spinning. In any case it is much easier to make the potentiometer part of your circuit such that the fab always has a high enough voltage such that it will spin. If you show your circuit, suggestions could be made how to do that. Also realize that using 9 V batteries for spinning a fan will mean that the batteries will be drained fairly quickly. For 9 V batteries, the current any fan needs is a bit high, 9V batteries are intended for much smaller currents. | |
| Feb 27, 2021 at 21:35 | review | First posts | |||
| Mar 1, 2021 at 5:01 | |||||
| Feb 27, 2021 at 21:33 | history | asked | AbleMind | CC BY-SA 4.0 |