Do you have a video on how to hook this up to an amp for speaker volume? Im trying to build a rechargable bluetooth receiver with a multi headphone splitter for my smart tv with bluetooth, but i want to take control of the volume.
Very nice demo! If we removed the Arduino from your circuit, would the blue wire (middle/output terminal on the "Pot" simply be poked into a hole in column 12 next to the (+) leg of the resistor, and you would get the same result? Hopefully, you say "Yes". My other question has to do with reversing your design for mere understanding. At present, you have the "Pot" wired to decrease resistance (brighten the LED) as you turn the dial/"Pot" clockwise. If we wanted to increase resistance (dim the LED) with a clockwise movement, would we simply reverse the wire connections to the "Pot"? Many Thanks!!!
Do you need a special potentiometer to use in a 12v 10A to 25A power supply circuit? The sellers rarely give amperage specs on the potentiometer listings. I have a power supply made from a computer PS. I want to make it variable. Seems simple enough. But I do not want to fry my potentiometers or damage other components in the process. I have a bunch of 10k linear pots but I am guessing they might be rated around 3 to 5 A?
Sure! Depending on the length of wire you should be fine. 1-2ft should be ok. Beyond that you might begin to have a drop-off in output voltage depending on the quality and size of the wire.
I don't understand why you need the third leg. So between leg 1 & 3 you have the full resistance. Lets say, 10k. The middle one is the one that is var. Why not just use the 1st and 2nd or the 2nd & 3rd?
First and third are for clamping the voltage output range, and the middle pin is the output, which is the voltage between those two ranges. If you are only using it as a variable resistor, and not variable voltage, then you only need to use 2 pins.
Do you have a video on how to hook this up to an amp for speaker volume? Im trying to build a rechargable bluetooth receiver with a multi headphone splitter for my smart tv with bluetooth, but i want to take control of the volume.
hey help to wire a sliding potentiometer with 3 pins
Very nice demo! If we removed the Arduino from your circuit, would the blue wire (middle/output terminal on the "Pot" simply be poked into a hole in column 12 next to the (+) leg of the resistor, and you would get the same result? Hopefully, you say "Yes". My other question has to do with reversing your design for mere understanding. At present, you have the "Pot" wired to decrease resistance (brighten the LED) as you turn the dial/"Pot" clockwise. If we wanted to increase resistance (dim the LED) with a clockwise movement, would we simply reverse the wire connections to the "Pot"? Many Thanks!!!
Do you need a special potentiometer to use in a 12v 10A to 25A power supply circuit? The sellers rarely give amperage specs on the potentiometer listings. I have a power supply made from a computer PS. I want to make it variable. Seems simple enough. But I do not want to fry my potentiometers or damage other components in the process. I have a bunch of 10k linear pots but I am guessing they might be rated around 3 to 5 A?
possible to use a female to male wire on the pins on the potentiometer to extend its range?
Sure! Depending on the length of wire you should be fine. 1-2ft should be ok. Beyond that you might begin to have a drop-off in output voltage depending on the quality and size of the wire.
Am I to assume that the power is coming from the USB cord ?
yeah, he's using an arduino which gets its power from the usb port
I don't understand why you need the third leg. So between leg 1 & 3 you have the full resistance. Lets say, 10k. The middle one is the one that is var. Why not just use the 1st and 2nd or the 2nd & 3rd?
First and third are for clamping the voltage output range, and the middle pin is the output, which is the voltage between those two ranges. If you are only using it as a variable resistor, and not variable voltage, then you only need to use 2 pins.
thanks v much. Sir great video....