LR1000E4 · 905 nm Laser Rangefinder Module
LR1000E4 UART wiring, pinout and serial protocol
The LR1000E4 talks UART-TTL @ 115200 bps and is powered from 3.3–5 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 | UART-TTL | Custom configurations are specified separately. |
| Baud rate | 115200 bps | |
| Supply voltage | 3.3–5 V |
LR1000E4 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 LR1000E4
The published single-unit price of the LR1000E4 is $80, falling to $30 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: LR1000E4 model page.
FAQ
What is the maximum range of the LR1000E4?
The published range is 4–1,000 m (Standard range; actual reach depends on target and 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 LR1000E4 use?
The published communication interface is UART-TTL @ 115200 bps.
What laser wavelength does the LR1000E4 use?
The published wavelength is 905 ± 5 nm; laser safety entry: Class 1.
How much does the LR1000E4 cost?
The published single-unit price of the LR1000E4 is $80, falling to $30 per unit at the largest published quantity band. Prices include shipping and are ordered directly from erdilrf.com.
Related guides
- LR1000E4 datasheet and specifications
- LR1000E4 Pixhawk / ArduPilot setup
- LR1000E4 ROS 2 driver
- LR1000E4 Arduino library
- LR1000E4 Raspberry Pi Python reader
- LR1000E4 price and ordering
- LR1000E4 power supply and current
- LR1000E4 accuracy and range test conditions
- LR1000E4 dimensions and weight
- UART laser rangefinder modules
- 905 nm laser rangefinder modules
- Class 1 laser rangefinder modules
- robot navigation 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.