[Dmitry] was shopping for LEDs and accidentally pulled the trigger on the wrong type. Since he didn’t want to be wasteful, he figured he should at least take the time to build something with them. A ...

A few articles have recently appeared describing novel ways to increase the number of LEDs a microprocessor can drive with a limited number of pins (Reference 1). The standard multiplexing technique ...

[Tim]’s Dice10 is an exercise in minimalism. Building an electronic dice using an ATtiny10 with code that fits within 1kB is not too difficult. Charlieplexing the LED’s would have used three of the ...

The term “Charileplexing” is not a familiar one for many electronics hobbyists. Charlieplexing is a technique proposed in early 1995 by Charlie Allen (at Maxim Integrated) for driving a multiplexed ...

We've written about Charlieplexing LEDs before - see Charlieplexing - Cylon-eyes and Holoclocks - but here is a new one: Chipiplexing LEDs! Charlieplexing is an electronics technique - apparently ...

Charlieplexing. The verb is an electronics technique apparently named after one Charlie Allen, an engineer at Maxim. It involves minimising the use of I/O pins on a microcontroller to drive a maximum ...

Eight-pin microcontrollers offer numerous peripheral features. However, the maximum number of I/O pins available is often limited to six, since two pins would be required for the chip's power supply.