LRF3000A1 · 905 nm Laser Rangefinder Module
LRF3000A1 UART wiring, pinout and serial protocol
The LRF3000A1 talks UART, 3.3 V TTL @ 115200 bps default; 9600 bps and is powered from 3.3–5 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 |
|---|---|---|
| Interface | UART, 3.3 V TTL | |
| Baud rate | 115200 bps default; 9600 bps | |
| Supply voltage | 3.3–5 V DC | Ripple <0.1 V. |
LRF3000A1 serial commands
Frame header 55 AA, 8-byte frames, 115200 baud, 8N1. The full frame layout and checksum are in the protocol document of erdi-lrf-drivers.
| Command | Bytes to send (hex) |
|---|---|
| Single-shot ranging | 55 AA 88 FF FF FF FF 84 |
| Continuous ranging | 55 AA 89 FF FF FF FF 85 |
| Stop ranging | 55 AA 8E FF FF FF FF 8A |
| Angle measurement | 55 AA 8A FF FF FF FF 86 |
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 LRF3000A1
The published single-unit price of the LRF3000A1 is $200, falling to $80 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: LRF3000A1 model page.
FAQ
What is the maximum range of the LRF3000A1?
The published range is ≥3,000 m (70%-reflectivity building target; clear weather; visibility ≥4 km.). 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 LRF3000A1 use?
The published communication interface is UART, 3.3 V TTL @ 115200 bps default; 9600 bps.
What laser wavelength does the LRF3000A1 use?
The published wavelength is 905 ± 10 nm; laser safety entry: Class 1 (IEC 60825-1).
How much does the LRF3000A1 cost?
The published single-unit price of the LRF3000A1 is $200, falling to $80 per unit at the largest published quantity band. Prices include shipping and are ordered directly from erdilrf.com.
Related guides
- LRF3000A1 datasheet and specifications
- LRF3000A1 Pixhawk / ArduPilot setup
- LRF3000A1 ROS 2 driver
- LRF3000A1 Arduino library
- LRF3000A1 Raspberry Pi Python reader
- LRF3000A1 price and ordering
- LRF3000A1 power supply and current
- LRF3000A1 accuracy and range test conditions
- LRF3000A1 dimensions and weight
- UART laser rangefinder modules
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Model records
Open the model page for the full specification table, downloads, published price and ordering.