MAX7219 8×8 LED Matrix Display

Drive a 64-LED dot-matrix display from three Arduino pins via the MAX7219 SPI driver.

Difficulty: Through-hole. Estimated build time: about 50 minutes. Estimated parts cost: about US$7.00. 5-part bill of materials with live supplier pricing. An 8×8 LED matrix scrolling display driven by a single MAX7219 in DIP-24.