Wiki - Indicator - 4 / 7 Indicator (Cathode)

Connection diagram 4 / 7 Indicator (Cathode).

An example of displaying numerical information.

Sample program:

Download example: file.ardublock | Open Online ArduBlock

Video:

Components from Aliexpress

LED

Button

Resistor

Potentiometer

4 - 8 / 7

TM1637

8 / 7 MAX7219

8 x 8 MAX7219

LCD 16x2 I2C

LCD 20X4 I2C

OLED 128X64

Nokia 84x84

Arduino Pro Mini

Arduino Nano

Arduino Uno

Arduino Uno R3

Arduino Mega

Arduino Leonardo

Bread board

Training set