In Stock
Share your international phone number to discuss pricing and delivery:
Buy this product in 1 click:
Or contact us directly via:
Optical Flow & Lidar Sensor 3901-L0X
Brand: Matek
Product Code: 3901-L0X
All about product
Description
Reviews
0
Questions0
Optical Flow & Lidar Sensor 3901-L0X
Description
1. Product Overview
1.1. Product Description
The Matek 3901-L0X Optical Flow Lidar Sensor is a compact, lightweight dual-sensor module designed for drones, UAVs, and robotics applications requiring accurate position hold and altitude measurement. It integrates a PMW3901 optical flow sensor and a VL53L0X Time-of-Flight (ToF) Lidar, offering precise horizontal and vertical motion detection for GPS-denied or indoor environments.
1.2. Key Features
- Dual-sensor integration: Optical Flow (PMW3901) + Lidar (VL53L0X).
- Optical flow detects horizontal movement; Lidar measures height up to 2m.
- Compact and lightweight: 36×12mm, ~2g.
- Wide field of view: Optical flow ~42°, Lidar ~27°.
- Operating voltage: 4.5–5.5V.
- Low power consumption: ~40mA typical.
- Communication interface: UART (MSP protocol).
- Supports ArduPilot and other flight control firmware for optical flow and rangefinder functions.
- Best performance under good lighting conditions (60lux).
- Ideal for indoor or low-altitude stabilization.
2. Technical Specifications
Table 2-1. 3901-L0X Sensor Specifications
| Parameter | Specification |
|---|---|
| Optical Flow Sensor | PMW3901 |
| Lidar Sensor | VL53L0X (Time-of-Flight) |
| Operating Range (Lidar) | 8cm – 200cm (max range ≈2m) |
| Field of View | Optical Flow: 42°|Lidar: 27° |
| Interface | UART (MSP protocol) |
| Input Voltage | 4.5–5.5VDC |
| Current Consumption | ≈ 40mA |
| Dimensions | 36×12mm |
| Weight | ≈ 2g |
| Minimum Illumination | 60lux |
| Supported Firmware | ArduPilot, PX4 (via MSP protocol) |
3. Applications
- Multirotor Drones: Enables stable position hold without GPS.
- Indoor UAVs: Provides precise optical flow navigation and height estimation.
- Robotics: Short-range movement tracking and altitude detection.
- Landing Systems: Assists in smooth autonomous landings with Lidar data.
- Educational and Research Platforms: Ideal for testing optical navigation algorithms.
4. Setup Integration
- Mount the module facing downward; arrow mark points to the drone’s front.
- Connect the sensor via UART to the flight controller (TX–RX, RX–TX, 5V, GND).
- In ArduPilot:
- Set
FLOW_TYPE = 7(MSP). - Set
SERIALn_PROTOCOL = 32for the port used. - Set
RNGFND1_TYPE = 32to enable the rangefinder (Lidar).
- Set
- Ensure at least 2cm clearance from the ground during startup.
- Use under good lighting and with textured surfaces for accurate optical flow readings.
- The Lidar range is short (~2m); suitable for low-altitude operation only.
5. LED Indicators
| Indicator | Status | Description |
|---|---|---|
| Blue LED | Solid | Power On |
| Green LED | Blinking | Communication Active (UART data output) |
| Red LED | Blinking Fast | Sensor Error or Invalid Data |
6. Notes Limitations
- The Lidar sensor is short-range only and performs best indoors or at low altitude.
- Optical flow accuracy depends on lighting and surface texture.
- Ensure correct orientation and stable mounting for reliable measurements.
- When using outdoors, avoid direct sunlight on the Lidar lens to prevent interference.
- Ensure firmware and MSP configuration are updated to the latest ArduPilot release.
7. Practical Summary
The Matek 3901-L0X Optical Flow Lidar Sensor offers precise position and altitude sensing for GPS-less environments. Combining PMW3901 optical flow and VL53L0X Lidar technology, it provides accurate horizontal motion tracking and altitude measurement within a compact, low-power module. Perfect for small UAVs, robotics, and indoor drones requiring reliable position hold and height stabilization.
Reviews
There are no reviews for this product.
There are no reviews for this product, be the first to leave your review.
Answers & questions
Add your question and we will answer as soon as possible.
No questions about this product, be the first and ask your question.