Adafruit 0.56" 4-Digit 7-Segment Display with I2C Backpack - Red STEMMA QT / qwiic Category_Arduino/LilyPad Arduino so that four relays could

so that four relays could be easily controlled by the Arduino

* Maximum Temperature: 500°C (930°F)

The SparkFun FTDI Basic Breakout was designed to decrease the cost of Arduino development and increase ease of use (the auto-reset feature rocks

Available either as a bare pHAT or as a kit with 6 red or green LED modules (you'll need to solder them yourself)

it can preform very well even in dim environments

Adafruit 0.56" 4-Digit 7-Segment Display with I2C Backpack - Red STEMMA QT / qwiic Category_Arduino/LilyPad Arduino so that four relays couldWhat's better than a single LED? Lots of LEDs! A fun way to make a small display is to use an 8x8 matrix or a 4 digit 7 segment display . Matrices like these are 'multiplexed' so to control all the seven segment LEDs you need 14 pins. That's a lot of pins, and there are driver chips like the MAX7219 that can control a matrix for you but there's a lot of wiring to set up and they take up a ton of space. Here at Adafruit we feel your pain! After all,