Controlling LED Intensity with Light Sensors

AI Thread Summary
Light sensors are essential for controlling LED intensity based on ambient light conditions. A Light Dependent Resistor (LDR) is a viable option for sensing light levels, allowing for adjustments to the LED brightness. Additionally, photodiodes can be used to generate current in response to light intensity, providing another method for this project. If these sensors are not available, alternative approaches may involve using microcontrollers to process light data and adjust LED output accordingly. Implementing these solutions can effectively manage LED brightness in relation to surrounding light sources.
zapper
Messages
3
Reaction score
0
Hi I would like to know if there is a sensor available in the market that would help control the intensity of light given out by a white LED, taking into account the light coming from the surrounding ambient light. As an example I am trying to implement a project in which I would have to control the intensity of light given out from a white LED which is placed above a computer monitor screen, based on the intensity of light given out from the computer screen, I would have to control the LED light. I would also like to know if the sensor is not available in the market how am I supposed to go about implementing this project.
 
Engineering news on Phys.org
A photodiode generates current due to the light intensity that it senses, maybe u can try it.
 
Hey guys. I have a question related to electricity and alternating current. Say an alien fictional society developed electricity, and settled on a standard like 73V AC current at 46 Hz. How would appliances be designed, and what impact would the lower frequency and voltage have on transformers, wiring, TVs, computers, LEDs, motors, and heating, assuming the laws of physics and technology are the same as on Earth?
I used to be an HVAC technician. One time I had a service call in which there was no power to the thermostat. The thermostat did not have power because the fuse in the air handler was blown. The fuse in the air handler was blown because there was a low voltage short. The rubber coating on one of the thermostat wires was chewed off by a rodent. The exposed metal in the thermostat wire was touching the metal cabinet of the air handler. This was a low voltage short. This low voltage...
Thread 'Electromagnet magnetic field issue'
Hi Guys We are a bunch a mechanical engineers trying to build a simple electromagnet. Our design is based on a very similar magnet. However, our version is about 10 times less magnetic and we are wondering why. Our coil has exactly same length, same number of layers and turns. What is possibly wrong? PIN and bracket are made of iron and are in electrical contact, exactly like the reference design. Any help will be appreciated. Thanks. edit: even same wire diameter and coil was wounded by a...
Back
Top