MAX7219

Serially Interfaced, 8-Digit, LED Display Drivers The MAX7219/MAX7221 are compact, serial input/output common-cathode display drivers that interface microprocessors (µPs) to 7-segment numeric LED displays of up to 8 digits, bar-graph displays, or 64 individual LEDs. Included on-chip are a BCD code-B decoder, multiplex scan circuitry, segment and digit drivers, and an 8x8 static RAM that stores each digit. Only one external resistor is required to set the segment current for all LEDs. The MAX7221 is compatible with SPI™, QSPI™, and MICROWIRE™, and has slew-rate-limited segment drivers to reduce EMI.

Main Content

Pong Tennis With LED Matrix, Arduino and Joysticks

“This project is intended for beginners and experienced tinkerers alike. At a basic level it can be done with a breadboard, jumper wires and stuck to to a piece of scrap material (I used wood) with Blu-Tack and no soldering …

Li-ion Battery Bluetooth Scoreboard

“The Project is based on my Instructables from the last year: Bluetooth Table Tennis Scoreboard The Scoreboard is dedicated for amateur sport fans and table tennis player But it is not applicable just for table tennis. Can be used for …

Interactive Minecraft Do Not Enter Sword/Sign (ESP32-CAM)

“There are really several reasons why this project came into existence: 1. As an author of cooperative multitasking library TaskScheduler I was always curious how to combine the benefits of cooperative multitasking with the benefits of pre-emptive one. There are …

Space Hinvaders

“A micro game with LED matrix where the pixels used for the entire game are about those of a single sprite of the original invader. I really like old video games, and I had never found a space invader style …

7219 Tube Clock

“This is my first instructable. I got my inspiration for building this clock from https://nixieclocks.shop/product/energy-pillar-iv…. I liked the design of the clock and thought that VFD tube is difficult to find so I took 7219 seven …

Columns - a Retro Handheld Game for Arduino

“Based on the 1989 Sega(R) arcade and console game Columns which was inspired by Tetris, this is a more modern take on a plausible handheld portable version as would have been envisioned in the late 1980’s. My version …

Tobers Multidisplay for ESP8266 and ESP32

“LED Matrix Display showing time, date, news, current weather & forecast, own messages and Spotify currently playing (ESP32 only). Tobers Multidisplay is a LED-Matrix display controlled by an ESP8266 or an ESP32. It can show current time and date, news …

8x8 Led Matrix Clock & Anti-Intrusion Warning

“In this Instructable we’ll see how to build a 8x8 Led Matrix Clock activated by motion detection. This clock can be used also as anti-intrusion device that send a warning message if a motion is detected to a telegram …

Make Your Own Tetris Game with Meadow

“In this project we’re going to learn how easy is to make our very own Tetris game with a 2 axis analog joystick and a MAX7219 LED dot matrix display. To write the logic for these peripherals, we’ll …

Open Source Arduino Learner Kit V2

“Last year, I made my first Arduino Learner Kit for making the Arduino learning easy to a beginner. Over the year I discovered few bugs on my design. I also got some feedback from the readers to make a few …