Easy build 4-channel timer, suitable for energy saving, simple hardware and nice firmware with c coding. Automatic power down mode, simple settings, optional buzzer for sound alarm.using MAX7219 to control LED ....Go

Easy build and use, the general purpose Big LED with SPI serial interfacing. Expandable for multiple digits but still uses only three wires for receiving data from any uC boards....Go

ATMega128 based LED project.all the stuff are offered.you can do it by yourself....Go

This is another one of those projects which designed itself, or rather, what I could find in my junk box(s) determined most aspects of the final design. The interface consists of four push-buttons, two dual-color LEDs, a four digit 7-segment LED display, a rotary encoder and a 10-segment LED bargraph which I'm still trying to get to work....Go