Connect external 5VDC supply’s GND, to the GND of 8×8 LED Matrix Module; Note that the 8x8LED Matrix Module should be common-grounded with Arduino, ie, always remember to interconnect the Arduino GND ...

18 year old maker and developer Nikodem Bartnik from Poland, has created and awesome Arduino-based dot-matrix printer, capable of creating art on paper 55 cm wide and as long as you need, thanks ...

Each Pixie module is designed to host two gorgeous little Lite-On LTP-305G/HR 5×7 LED dot matrix displays, which we suspect have been impulse purchases in many a shopping cart.

When a Minnesota outfit of all-star DIY-ers called 1.21 Jigawatts won this summers Red Bull Creation Contest, we couldnt wait to have them create a project just for PM readers.

Kenneth picked up an old dot matrix printer from a swap meet for only $5–what a steal! He then used a BeagleBone –basically Texas Instruments’s version of an Arduino board, to connect it to ...

Most of us have an 8x8 LED matrix from one of our Arduino kits. What can we do with them? This module investigates how to use these interesting devices. Along the way, we describe a fun electronics ...

Dot matrix vehicle headlamp module uses Osram micro-LED array Vehicle part maker Marelli and Osram have teamed up to design a headlamp module with a 20,000 pixel micro-LED array. Each pixel measures ...