Arduino with Sparkfun 7-segment Serial Display

Here’s a quick example of getting an Arduino working with a Sparkfun 7-Segment Serial Display. This short example just counts up from zero to 9999.

Connections

• Arduino 5v pin to “VCC” on LED module
• Arduino GND pin to “GND” on LED module
• Arduino TX pin to “RX” on LED module

Source Code


int i = 1;
char buf[12];

void setup() {
Serial.begin(9600);
Serial.print("v");
}

void loop() {

sprintf(buf, "%04d", i);
Serial.print(buf);

if(i<9999) i++;
delay(1000);
}