LRF1830C · 1.54 µm Laser Rangefinder Module
LRF1830C UART wiring, pinout and serial protocol
The LRF1830C talks RS-422 in the specification table; TTL/RS-422 alternatives in the interface section and is powered from DC 12 V. Wire TX to the host RX, RX to the host TX, share ground, then send one of the commands below.
Electrical interface
| Parameter | Published value | Condition / note |
|---|---|---|
| Interface | RS-422 in the specification table; TTL/RS-422 alternatives in the interface section | |
| Connector | J30J in the specification table; Molex 51021-0500 alternative in the interface section | |
| Supply voltage | DC 12 V |
LRF1830C pinout
| Pin | Signal | Note |
|---|---|---|
| 1 | TTL RX | 3.3V |
| 2 | TTL TX | 3.3V |
| 3 | CTRL | 3.3V-5V power on, 0V power off |
| 4 | +12V | Power supply+ |
| 5 | GND | Power supply- |
| 1 | GND | Serial Port Ground |
| 2 | GND | 12V Input Negative |
| 3 | GND | 12V Input Negative |
| 4 | VCC 5V | 12V Input Positive |
| 5 | VCC 5V | 12V Input Positive |
| 6 | RS422 RX+ | Serial Port Receive + |
| 7 | RS422 RX- | Serial Port Receive - |
| 8 | RS422 TX- | Serial Port Transmit - |
| 9 | RS422 TX+ | Serial Port Transmit + |
Reading it from a computer
Open the port at the baud rate above, 8 data bits, no parity, 1 stop bit. The UART protocol decoder shows the frames live in a browser over WebSerial, and the erdi-lrf-drivers repository has Python, Arduino and ROS 2 readers for this frame format.
Ordering the LRF1830C
The published single-unit price of the LRF1830C is $7,000, falling to $3,500 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: LRF1830C model page.
FAQ
What is the maximum range of the LRF1830C?
The published range is ≥18,000 m to a 3 × 3 m object; line of sight; visibility ≥26 km; relative humidity ≤50% at 30 °C. 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 LRF1830C use?
The published communication interface is RS-422 in the specification table; TTL/RS-422 alternatives in the interface section.
What laser wavelength does the LRF1830C use?
The published wavelength is 1.54 µm ±0.02 µm; laser safety entry: Class I stated in the module document; complete configuration requires its own assessment.
How much does the LRF1830C cost?
The published single-unit price of the LRF1830C is $7,000, falling to $3,500 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.
- LRF1830C — LRF1830C 1.54 µm Laser Rangefinder Module