Hknssn
Creator, inventor and slightly insane
Ceiling lamp modification
Introduction
Bought this lamp, but soon realised that it was really bright and it was not dimmable.
So i opened it up and made some modifications. Now i can dimm the light and control it with my remote tv control.
The modification
This is how it looked like before i started to mess with it. It was basically just a 230VAC to 24VDC transformer powering the LED's.
The components used was:
- 1 x LM2596 voltage regulator
- 1 x arduino nano microcontroller
- 1 x potentiometer
- 1 x IR-reciever
- 1 x MOSFET transistor
The voltage regulator is connected to the existing 24VDC supply in the lamp. It then transforms 24VDC to 5VDC to power the arduino nano microcontroller.
Then the potentiometer, IR-reciever and transistor is connected to the microcontroller.
The IR-reciever is connected to an input on the microcontroller and can recieve signals from any IR source, in my case a tv remote control. There was some buttons on the tv remote controller that wasn't used for anything which was kinda nice.
The potentiometer is used for getting a default value for the light as it powers on. This could be something you just program but i did it to be able to change it easy with a screwdriver if needed.
The transistor is the component that controlls the power to the LED's which in turn is controlled by the microcontroller.
To get the LED's to dimm you basically turn the LED's on and off really fast. The amount of time the led is on compared to how long its off determines how bright light is perceived by your eyes.
To mount the components i made brackets with my 3d printer.
