Variable resistor with display

I want a way to have a variable resistor it's a digital display and maybe a way to see resistance as well the reason is cars use resistance for sensors all over Mainly I want to use led's but dam warning lights , error free lights well nothing works I been adding different resistors to try trick the ECU and variable resistor with display will tell me what resistor I need

Is there sumink I can buy ? Or I can build

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jw0752 over 7 years ago +1

Hi Craig, Sorry, I am having a hard time understanding what you are looking for. Are you looking for a variable resistor that you can use for an input to the computer in place of a sensor? Even if I have…

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Sean_Miller over 7 years ago

You could use a potentiometer as your source voltage. Turn it to get the desired level of brightness.

You could either simply mount or hide the potentiometer. Or, you could measure the voltage output and then calculate the resistor to emulate it with a voltage divider circuit.

See ya',
Sean
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Sean_Miller over 7 years ago

You could use a potentiometer as your source voltage. Turn it to get the desired level of brightness.

You could either simply mount or hide the potentiometer. Or, you could measure the voltage output and then calculate the resistor to emulate it with a voltage divider circuit.

See ya',
Sean
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the-dubster over 7 years ago in reply to Sean_Miller

I think that the brightness isn't the issue, rather that his CANBUS is showing an error as the lamp is incompatible. That said, it is an option to figure out the required resistance as you can adjust until the error clears.
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