Jump to content

Extremely Dumb Question

The Thing
in Physics

Featured Replies

I want to create a circuit that dims or brightens a LED.

I want the LED to glow BRIGHTLY as the environment around it gets darker, and vice versa.

I know I have to use a photovoltaic cell and maybe transistors, but the exact wiring of this circuit escapes me. I will probably also use a separate power source for the LED, but maybe not.

Help please!

Wire an LED and an LDR (light dependant resistor) as a potential divider.

 

Potential dividers are quite simple - look em up on google if you need to.

  • Author

...

OMG OMG Thanks 5614.

 

Arrrg I need to go shoot myself.

 

EDIT: Crap, missed.

Archived

This topic is now archived and is closed to further replies.

Go to topic listing

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.

Configure browser push notifications
Chrome (Android)
  1. Tap the lock icon next to the address bar.
  2. Tap Permissions → Notifications.
  3. Adjust your preference.
Chrome (Desktop)
  1. Click the padlock icon in the address bar.
  2. Select Site settings.
  3. Find Notifications and adjust your preference.