LRF50H · 905 nm LiDAR Distance Sensor
LRF50H UART wiring, pinout and serial protocol
The LRF50H talks UART and is powered from 9–36 V DC. 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 |
|---|---|---|
| Photobiological safety | Class 1 | Confirm against the controlled model document |
| Photobiological safety for indication | Class 2 | Confirm against the controlled model document |
| Supply voltage | 9–36 V DC | Confirm against the controlled model document |
| Interface | UART | Confirm against the controlled model document |
| Protection level | N/A | Confirm against the controlled model document |
| Wire specification | 5-pin 1.25 mm terminal, M1250V-05P, with 50 cm tinned loose wire | Confirm against the controlled model document |
LRF50H serial commands
Frame header 5C, 4-byte frames, 460800 baud, 8N1. The full frame layout and checksum are in the protocol document of erdi-lrf-drivers.
| Command | Bytes to send (hex) |
|---|---|
| Read serial no. | 5A 0D 02 0D 0D D6 |
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 LRF50H
The published single-unit price of the LRF50H is $100, falling to $50 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: LRF50H model page.
FAQ
What is the maximum range of the LRF50H?
The published range is 0.05–50 m (90% reflectivity); 0.05–15 m (10% reflectivity) (The two source values remain bound to their stated target reflectivity. The source marks this parameter as measured at 25°C in an indoor environment.). 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 LRF50H use?
The published communication interface is UART.
What laser wavelength does the LRF50H use?
The published wavelength is 905 nm; laser safety entry: Class 1.
How much does the LRF50H cost?
The published single-unit price of the LRF50H is $100, falling to $50 per unit at the largest published quantity band. Prices include shipping and are ordered directly from erdilrf.com.
Related guides
- LRF50H datasheet and specifications
- LRF50H Pixhawk / ArduPilot setup
- LRF50H ROS 2 driver
- LRF50H Arduino library
- LRF50H Raspberry Pi Python reader
- LRF50H price and ordering
- LRF50H power supply and current
- LRF50H accuracy and range test conditions
- LRF50H dimensions and weight
- UART laser rangefinder modules
- 905 nm laser rangefinder modules
- Class 1 laser rangefinder modules
- industrial and level measurement laser rangefinder modules
Model records
Open the model page for the full specification table, downloads, published price and ordering.