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.

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Farkle! Handheld PCB Game Console

“In this Instructable I will show you how I made my PCB Farkle Game! Farkle, also known as 10000, Zilch, 6 Dice, and Ten Thousand, is a fun and challenging dice game with multiple variations and scoring options. I first …

Pocket Dice! Electronic Dice for Liars Dice and More

“In this instructable, I will show you how I made this set of electronic dice. This is a small handheld device that contains 5 individual die with a button that initiates a random roll. The switch is used to turn …

2 Axis Digital Bubble Level V1.0

“A 2 axis level utilizing an MPU6050 (GY-521), Arduino Mega, 8X8 LED Matric (MAX7219) and 7 standard LEDs. Modular precision & fast response. Learning, experimentation, creating. The thing that drives most of us in this realm. After assembling and completing …

Car Windscreen HUD

“A heads-up display for your car’s windscreen showing your speed and/or heading. This project is a rebuild of Car HUD - Windscreen Display for Speed & Compass by marcozonca. I really liked the concept. Having a number of 0.8in …

Digital Clock LED Dot Matrix - ESP Matrix Android App

“The ESP Matrix Board that I developed for use in this project uses PCBWAY PCB services. By following this instructable you can make a Digital Clock LED Dot Matrix at a relatively cheap cost and don’t require coding skills …

How to Make Analog Clock & Digital Clock With Led Strip Using Arduino

“Today we will make a Analog Clock & Digital clock with Led Strip and MAX7219 Dot module with Arduino. It will correct the time with the local time zone. The Analog clock can use a longer LED strip, so it can …

Arduino Snake Game

“By using the Maxx7219 and a Joystick module you can make a fully functioning snake game Supplies: - 1 Arduino Nano/Uno/Mega/Due - 1 Maxx7219 - 1 Joystick Module”

How to DIY 32 Band LED Audio Music Spectrum Analyzer Using Arduino Nano at Home #arduinoproject

“Today we will make a 32 band LED Audio Music Spectrum Analyzer at Home using Arduino, it can shows frequency spectrum and play muisc at the same time. Note The max7219LED must be connected in front of the 100k resistor …

WiFi NodeMCU ESP8266 Google Clock

“A simple easy WiFi clock using “Google” timestamp, with temperature and humidity. Oct2020 update: bug fixing and automatic brightness I made several clock with arduino but was looking simple, easy, light, synchronized in real time with internet clock different than …

Pixie - Let Your Plant Smart

“Pixie was a project developed with the intention of making the plants we have at home more interactive, since for most people one of the challenges of having a plant at home is to know how to take care of …