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The Awesome and Cute AVR-based Programmable LED

Programmable LEDs are those projects that have been fully-programmed with numerous LEDs. In this case, the idea is to make the LED blinking sequence reprogrammable. Basically, the reprogramming can be easily done with light and shadow. Today, you’re giving the chance to build an awesome yet cute AVR-based Programmable LED. Before you’re building a programmable LED, you must first prepare the following materials: Two 1K resistor A Light Dependent Resistor A Low Current LED (1.7V, 2ma) An Atmel ATtiny13v, 1KB flash RAM, 64 Bytes EEPROM A CR2032 (3V, 220mAh) Soldering iron and wire Breadboard AVR programmer 5V power supply Multimeter The reason why the ATtiny13v is used because this version is able to run at 1.8V. In this case, it is possible to run the circuit with a very small battery. If you want it to run for a very long time, you might want to use a low current LED, which is able to reach full brightness at 2ma! Continue reading