qrti / backlight

backLight

Brightness Control with Rotary Encoder for LED-Strip

Summary

A mechanical rotary encoder allows smooth dimming of a LED-Strip, pressing the wheel switches between off-mid-max brightness. The raster of the encoder gives a nice haptic feeling when rolling the wheel. Encoder, wheel and switch originate from a mouse. The assembler source contains robust encoder routines to compensate switch bouncing.

Links

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-> source

Options

Two options in source

.define PWLOGIC     1                   ;PWM logic          0 negative  1 positive
.define ENCDIR      0                   ;encoder direction  0 normal    1 reverse 

Schematic

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Views

Inside the box

Rotary encoder and mouse wheel

Switch and mouse wheel

Top view PCB

Bottom View PCB

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