Circuit diagrams and schematics - Electronic projects

This simple circuit functions as a 12 LED chaser. A single illuminated LED ‘walks’ left and right in a repeating sequence, similar to the effect seen on KITT, the car in the Knight Rider TV series. Fully commented source code and programmer ready HEX files are provided for the PIC 16F84A and 16F628A at the [...]

Caller Line Identification displays on a (2×16) LCD the phone number of the person who is ringing you, before you even answer, this number stays on the LCD till it will be replaced by a new received phone number or if the button is pressed. Related Links More circuit about IC PIC16F628 More circuit about [...]

The idea of this project came from my youngest son. He was dreaming of a small tool able to write symbols or pictures on a screen. As a graphic LCD (even bought at Crownhill ) was too expensive (or too easy??), the solution adopted was to pilot a matrix of Leds. This way, with only [...]