SPD1200N4 · 905 nm Laser Rangefinder Module

SPD1200N4 Arduino library and example sketch

Name: SPD1200N4 905 nm Laser Rangefinder Module
Brand: ERDI LASER
SKU: SPD1200N4

The Arduino library in erdi-lrf-drivers decodes the SPD1200N4 frame (8 B / 2 B at 115200 baud) and returns the distance in m. Use a hardware serial port; SoftwareSerial is not reliable at this rate.

Wiring

SPD1200N4 TX → Arduino RX1, RX → TX1, GND → GND, supply 3.3–5 V. Interface level: UART-TTL (customizable); check the level before connecting a 5 V board.

Example sketch

#include <ErdiLRF.h>
ERDI_SPD1200N4 lrf(Serial1);   // SPD1200N4

void setup() {
  Serial.begin(115200);
  Serial1.begin(115200);
  lrf.begin();
}

void loop() {
  if (lrf.readSingle()) {
    Serial.println(lrf.distanceMeters());
  }
  delay(100);
}

Library and boards

Ordering the SPD1200N4

The published single-unit price of the SPD1200N4 is $90, falling to $35 per unit at the largest published quantity band. Prices include shipping and are ordered directly from erdilrf.com. Technical questions and quantity quotes: tommy@erdimail.com. Full specification table, downloads and ordering: SPD1200N4 model page.

FAQ

What is the maximum range of the SPD1200N4?

The published range is Catalog range 0.2–1,200 m. A 1,500 m night-time figure appears in the source under special conditions and is not a guaranteed range. (SPD1200N4 controlled source technical table; strong sunlight or low visibility may reduce range). A range figure is only comparable together with the target and conditions it was measured on, so the condition is listed next to the value.

Which interface does the SPD1200N4 use?

The published communication interface is UART-TTL (customizable) @ 115200 bps (default).

What laser wavelength does the SPD1200N4 use?

The published wavelength is 905 nm ±5 nm; laser safety entry: IEC Class I.

How much does the SPD1200N4 cost?

The published single-unit price of the SPD1200N4 is $90, falling to $35 per unit at the largest published quantity band. Prices include shipping and are ordered directly from erdilrf.com.

Related guides

Model records

Open the model page for the full specification table, downloads, published price and ordering.

SPD1200N4 — SPD1200N4 905 nm Laser Rangefinder Module
LR1200E2 — LR1200E2 905 nm Laser Rangefinder Module
LR1200E4 — LR1200E4 905 nm Laser Rangefinder Module
LRF1200A1 — LRF1200A1 905 nm Laser Rangefinder Module
SPD1200N0 — SPD1200N0 905 nm Laser Rangefinder Module