LiteWing Drone Positioning Module - Optical Flow & ToF Sensor for Height Hold & Indoor Position Hold (VL53L1X + PMW3901)

The LiteWing Drone Positioning Module is a plug-and-play optical flow and ToF-based stabilization add-on designed for indoor and GPS-denied flight. Featuring the PMW3901 optical flow sensor for precise X/Y position tracking and the VL53L1X Time-of-Flight sensor for accurate height measurement, this module enables stable height hold and position hold performance. Ideal for DIY drones, autonomous flight experiments, and educational robotics projects.

To make your development easier, the LiteWing Drone positioning module comes with its dedicated wiki page and tutorials to cover the basics to advanced concepts, and help you understand the basics and build your own cool projects

Important: The PCB colour of this module might be in black or green depending upon the time of purchase. The functionality and features will remain the same regardless. 

Wiki Page: https://circuitdigest.com/wiki/litewing-drone-positioning-module/

Key Features

1. Drone optical flow sensor for precise indoor position tracking

2. ToF height sensor for stable altitude hold (up to 4m)

3. Enables height hold and position hold without GPS

4. Designed for indoor drone positioning

5. Dedicated SPI interface for deterministic optical flow data

6. Dedicated I²C bus for stable ToF height measurement

7. Plug-and-play 24-pin expansion connector

8. Lightweight design (~8g) for minimal flight impact

9. 4x WS2812B RGB LEDs for status indication and debugging

10. Open-source hardware design (schematics & firmware support available)

Return Policy Overview

At ROBODIUM™, we want you to be completely satisfied with your purchase. You may return most items within 7 days of delivery for a full refund or exchange.

Return Window

• Standard Returns: 7 days from delivery date for any reason, including if you simply changed your mind.
• Defective/Damaged Items: 7 days from delivery date for items received damaged or defective.
• Manufacturing Defects (Warranty): 15 days from delivery for manufacturing defects, unless a different warranty period is specified on the product page.

What Can Be Returned

Most items sold on ROBODIUM™ can be returned within the return window, including:

• Items you no longer need or changed your mind about
• Products received in damaged condition
• Items with manufacturing defects
• Wrong items received (item mismatch)
• Missing components inside the package

Return Conditions

To be eligible for a return, items must be:

• In their original, unused condition
• In the original packaging with all accessories, manuals, and free gifts (if any)
• Accompanied by proof of purchase

Note: Products damaged due to misuse, modification, static discharge, soldering, or improper handling may not be eligible for return.

How to Initiate a Return

1. Contact us via email at support@robodium.com or call +91 8123109966
2. Provide your order number and reason for return
3. Submit photos/videos of the item (especially for damaged/defective products)
4. Our team will review and approve your return request within 1-2 business days

Return Pickup Process

We arrange the return pickup for you - hassle-free returns similar to major e-commerce platforms.

• Once your return is approved, we will coordinate pickup from your location.
• Pack the product securely in its original packaging.
• Include a copy of the order confirmation or packing list.
• Keep the package ready - our logistics partner will collect it at the scheduled time.

Return Shipping Costs

• Defective, damaged, or wrong items: ROBODIUM™ covers all return shipping costs. No charges to you.
• Change of mind returns: A flat return shipping fee of ₹100 will be deducted from your refund amount.

Refund Process

• Refund Method: Refunds are processed to your original payment method.
• Processing Time: 5-7 business days after we receive and inspect the returned item.
• Refund Amount: Full purchase price minus any applicable return shipping fees.
• Orders canceled before shipping receive a full refund (minus up to 5% payment gateway charges, if applicable).

Replacements

• Once the returned item is inspected and approved, we ship the replacement at no additional cost.
• Replacement items are dispatched within 2 business days of receiving your return.
• If replacement is unavailable, we provide a full refund.

Warranty Terms

All products include a minimum 15-day warranty against manufacturing defects unless otherwise specified on the product page.

Warranty does not cover: misuse, soldering damage, modifications, physical damage, or incorrect electrical connections.

Order Cancellations

• Orders in Pending or Payment Verification status can be canceled for a full refund.
• Contact us immediately at support@robodium.com to cancel before shipping.
• Once an order is shipped, it cannot be canceled but can be returned after delivery.

Customer Service Commitment

• Email Response Time: Within 24 hours on business days
• Phone Support: Monday-Saturday, 10:00 AM - 6:00 PM IST
• Return Request Review: 1-2 business days
• Issue Resolution: Within 48 hours of verification