8 Channel PWM LED Chaser PIC 16F628A


Posted on Feb 19, 2013

This neat little circuit provides 8 LEDs directly driven from the PIC along with a single mode control switch. The firmware elsewhere on this page drives the LEDs with a 5 bit PWM signal providing each of the 8 LED channels with four levels of intensity; off, dim, mid, bright. A number of sequences are programmed into the firmware to provide some interesting visual effects and chase sequences, including the classic effect seen on the car in the Knight Rider TV series.



The design is deliberately simple with each LED being directly driven from a PIC I/O pin. This and the inclusion of an in-circuit programming header (ICSP) make the circuit ideal for teaching/learning introductory PIC assembly language programming. Ho




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

PAL/NTSC Video Time/Date Generator
Audio DAC S / PDIF (AES3) to analog
Rs232c-led-circuit
Audio Amplifier Volume Indicator
simple preamplifier for microphones tape heads etc
Electrical Single Line Diagram - Part Two
LCD displays easy to use and easy to build
FAST CLAMPl
Universal Four-Digit Keypad-Operated Switch - Construction Details



Top