Uploaded July 2019 | Updated September 2026, 3 weeks ago

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Arduino 4-digit up & down counter using Seeed Studio Grove base shield, 4-digit display and button modules. Circuit diagram and Arduino code at:
simple-circuit.com/arduino-led-blink-seeed-studio-grove-led-socket-kit

Seeed Studio Grove base Shield:
seeedstudio.com/Base-Shield-V2.html

Seeed Studio Grove 4-digit display:
seeedstudio.com/Grove-4-Digit-Display.html

Seeed Studio Grove button:
seeedstudio.com/Grove-Button-p-766.html