LRF0305C · 1535 nm Laser Rangefinder Module
LRF0305C UART wiring, pinout and serial protocol
The LRF0305C talks UART(TTL 3.3V) and is powered from DC 3~5V. 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 Type | UART(TTL 3.3V) | |
| Power Supply Voltage | DC 3~5V |
LRF0305C pinout
| Pin | Signal | Note |
|---|---|---|
| 1 | POWER_ON | Module Power Switch, TTL 3.3V Level; Module On (>2.7V), Module Off (<0.3V) |
| 2 | UART_RX | Serial Port Receiver, TTL 3.3V Level |
| 3 | UART_TX | Serial Port Transmitter, TTL 3.3V Level |
| 4 | NC | |
| 5 | Power Positive | Power Supply, 3~5V |
| 6 | GND | Serial Port Ground |
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 LRF0305C
The published single-unit price of the LRF0305C is $500, falling to $300 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: LRF0305C model page.
FAQ
What is the maximum range of the LRF0305C?
The published range is ≥ 4,000m @60% Reflectivity, Building Target ≥3,000m @30% Reflectivity, 2.3 × 2.3m Target ≥1,500m @30% Reflectivity, 0.5 × 1.7m Target ≥800m @30% Reflectivity, 0.2 × 0.3m Target. 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 LRF0305C use?
The published communication interface is UART(TTL 3.3V).
What laser wavelength does the LRF0305C use?
The published wavelength is 1535±5nm; laser safety entry: Class I stated in the module document. Final accessible-emission classification applies to the complete configuration..
How much does the LRF0305C cost?
The published single-unit price of the LRF0305C is $500, falling to $300 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.
- LRF0305C — LRF0305C 1535 nm Laser Rangefinder Module