Content for MAX7219

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.

Micro Word Clock

“A 3D printed Micro Word Clock based on a 8x8 LED matrix. Time is shown as words or and as scrolling text. Around 6 months ago I built a Tiny Word Clock using a 60mm x 60mm LED matrix. It …

ADXL345 accelerometer “screen orientation”

“A while ago I saw a hourglass project online that I thought would be nice to build, after the tribulations of sourcing some missing files and getting the project to compile I found I didn’t have the right accelerometer …

DIY Simple BME280 Arduino Weather Station

“Super simple Weather station containing only two components. This time I will show you how to make a simple home weather station. The measured values are displayed on an 8 by 32 dots Led display consisting of four 8 by …

Simple LED Matrix Clock - Internet Time Synced - ESP32 Based

“When my very old analog wall clock stopped working, I wanted to quickly buy a new digital one, but then —- a 8x8 LED Matrix board with four modules, laying on my desk for a while, caught my attention —- and this …

Hello, my name is: a wearable name badge

“A programable and wearable electronic name badge that scrolls a name over several LED matrixes. A makerspace I’m a part of has a night that we’re open to the public for people interested in joining. It’s a …

Touchless Covid Free Electronic Dice Using Arduino

“Created a touchless Covid Free Electronic Dice using Arduino to play some board games with my son. My new project is an amazing way of giving our younger generation the taste of board games while staying COVID free. For this …

Halloween Shield

“The night before a Halloween party I thought - wouldn’t it be cool to add a sound-responsive element to my costume? The Prelude Preparing for a student “Fancy Dress” party can be a real challenge. I always struggle with finding …

Kerbal Controller - the Basics

“The goal of this tutorial is not to show how to build a specific KSP controller, but to show many of the common design choices and their pros and cons. The idea is to guide you to make your own …

Project  Cube Clock

Cube Clock

“A tiny 8x8 matrix clock that automatically rotates the display when the cube is rotated. Recently I stubbled across the Lexon Flip Travel Reversible LCD Alarm Clock. It got me wondering about a clock that always showed the time in …

Make a LED Matrix Box With Multiple Effects

“The use of LED Matrix Max7219 is quite common nowadays. You can use it for many different applications such as: Clocks, Scrolling Text, advertising… However, the sample code related to Max7219 I found relatively difficult for newbies, so I tried …