We use LED lights almost everywhere to light up the space or a room. But sometimes, we find it difficult to deal with the brightness in the night time. So, in this project, we will see how to make a LED dimmer using IC555. We can acheived control over brightness of these LED lights according to the surroundings. So lets make LED Dimmer
Everything we need,
Schematics & Gerber File,
Step 1: Acquiring the components
We need to have a LED strip as a basic component. We can also add buck converter to lower the voltage. Although, we might face a problem as the current that can be handled by buck converter is same as current drawn by LED. So, we need to use PWM.
Step 2: Assembling PWM circuit
We can assemble a PWM circuit and decrease the voltage value by 25,50,75% of the original voltage. We can assemble the circuit on the breadboard to see if it works. All we need is IC555, diodes, resistors, and a potentiometer. We can also make a PCB and assemble the components.
Step 3: Additional attachments and final tests
As IC555 can handle a maximum of 200 mA, we need to add additional MOSFET. We will use IRFZ44N Mosfet. After adding MOSFET and connecting the circuit to LED, this project will be complete.