LRF22VB 20m Single-Point DToF LiDAR Sensor for Drone Altitude Hold, Robot and AGV Obstacle Avoidance

TECHNICAL SPECIFICATIONS

(Note: 1. This parameter was measured at 25°C in an indoor environment. 2. This parameter was measured with a 90% reflector in an outdoor environment at 25°C.)

OUTLINE DIMENSION(mm)

PIN INTERFACE

No.	Definition / Wire Color	User Interface
1	NC (White)	/
2	3.3V (Red)	External Power +
3	TX （SCL）(Yellow)	RX（SCL）
4	RX（SDA） (Green)	TX（SDA）
5	NC (Blue)	/
6	GND (Black)	External Power -

Product Description

The LRF22VB is a compact single-point LiDAR sensor based on the DToF (Direct Time of Flight) principle, designed for drone altitude holding, obstacle avoidance in robots and AGVs, industrial light curtains and camera focusing. It combines long 20 m range, high update rate and strong ambient light immunity in a tiny 1.5 g module for cost-sensitive embedded systems.

The sensor measures from 0.05 m to 20 m on 90% reflectivity targets and up to 10 m on 10% reflectivity, with ±5 cm accuracy below 5 m and 1% of distance beyond 5 m. Repeatability is ±30 mm and the distance resolution is 1 mm, making it suitable for precise altitude control near the ground, positioning of mobile robots and detection in industrial safety curtains. The maximum measuring frequency is 200 Hz, with selectable output rates of 200/100/50/20/10/1 Hz, so system designers can choose between highest temporal resolution and lower data rates to match processing budgets.

To handle harsh lighting, the LRF22VB provides ambient light immunity up to 60 kLux with an 8 m range, enabling reliable ranging in bright indoor environments or outdoor scenes with strong sunlight. It uses a 905 nm laser and is classified as photobiological safety Class 1, making it safe for use on drones, service robots and human–machine interaction devices when integrated correctly. The operating temperature range of −20°C to +60°C supports both indoor and many outdoor scenarios.

Electrically, the module runs from a 3.0–3.6 V DC supply, with typical average current around 40 mA and peak current about 70 mA at 3.3 V, giving an average power consumption of <0.2 W. It offers both UART and I²C communication interfaces. The UART port defaults to 460800 bps (adjustable), using a simple frame structure with a fixed header, 2-byte distance value (0–20000 mm, 20000 indicating out-of-range) and checksum, in little-endian format. I²C operation uses a 7-bit slave address of 0x52, with registers for distance, laser control, ID, software version, serial number, I²C address and factory reset, allowing tight integration with MCUs and SoCs that prefer I²C buses.

Physically, the LRF22VB measures only 21 × 15 × 7.43 mm and weighs about 1.5 g, making it ideal for drone flight controllers, compact robot controllers, AGV sensor stacks and camera modules where every gram and square millimetre matters. The specified beam forms a spot that grows from 5 cm at 1 m up to 100 cm at 20 m, so the target surface in real applications should be larger than the beam spot to ensure stable measurements, especially at the far end of the range.

Typical applications include drone altitude holding and obstacle avoidance, where the high 200 Hz rate supports fast control loops; service and industrial robots or AGVs, where mid-range detection around 5–20 m helps with navigation and safety; industrial light curtains and area monitoring, where repeated, high-frequency single-point measurements can be combined into virtual safety zones; and camera focusing or smart terminals that need absolute distance information instead of relying only on image contrast.