M5Stack GPS/BDS Unit with SMA Antenna (AT6668)
📦 Location of the warehouse: München, Germany
🚚 We will ship your order within 24 hours after the order is taken.
- Pre-Ordering: If an item is unavailable, you can pre-order it. We'll dispatch once stock is replenished, usually within 10 working days.
- Express Shipping: Need it faster? Contact us via email or through our live chat support, and we'll arrange expedited delivery for you.
Free Shipping from 30€ in Germany, 50€ in the EU!
- EU Countries Delivery Time: 4~8 working days.
- Other Countries Delivery Time: 2~2.5 weeks.
Free shipping for you
Free Shipping from 30€ in Germany, 50€ in the EU!
Trustpilot rating: 4/5
Thank you for your support - rate us on Trustpilot!
M5Stack GPS/BDS Unit with SMA Antenna (AT6668)
The Unit-GPS SMA represents an advanced global navigation and positioning solution, incorporating the high-performance ATGM336H navigation module from Microelectronics, which is based on the AT6668 chip design. This unit is equipped with an external active antenna that enhances the precision and reliability of satellite positioning services.
Compared to previous models, the AT6668 facilitates multi-frequency and multi-mode GNSS signal reception, thereby ensuring compatibility with various satellite navigation systems, including GPS, BD2, BD3, GLONASS, GALILEO, and QZSS. The system is capable of executing both combined multi-system positioning and independent single-system positioning, which contributes to improved interference resistance and heightened positioning accuracy.
This module is particularly suitable for high-accuracy positioning applications, such as vehicular navigation and IoT location devices, even in environments characterized by weak signal conditions.
Features
- Supports multiple satellite navigation systems (GPS/QZSS/BD2/BD3/GAL/GLO)
- Multi-frequency and multi-system reception
- Multi-channel support
- External active antenna
- 2x LEGO-compatible holes
- Programmable platforms: Arduino, UIFlow, ESP-IDF, etc.
Recommended Articles
Comparing GPS/BDS Unit v1.1 and Unit-GPS SMA
How To Use M5Stack Unit GPS SMA
Navigating The World With M5Stack Unit-GPS SMA (AT6668): A Comprehensive Overview
Includes
- 1x Unit-GPS SMA
- 1x HY2.0-4P cable (20CM)
- 1x External active antenna
Applications
- Drones
- Portable devices
- Public transportation announcement systems
- Vehicle positioning and navigation
- Wearable devices
- IoT location devices
Specifications
| Specification | Details |
|---|---|
| SoC | AT6668 |
| Supported Systems | GPS/QZSS/BD2/BD3/GAL/GLO Frequencies: BDS: B1I+B1C GPS/QZSS/SBAS: L1 GALILEO: E1 GLONASS: R1 |
| Channels | 50 |
| Communication | UART (default: 115200bps@8N1) |
| Positioning Accuracy | <1.5m (CEP50) |
| Positioning Update | Maximum 10Hz |
| Protocol | NMEA0183 4.1 |
| Sensitivity | Tracking: -162dBm, Acquisition: -160dBm, Cold start: -148dBm |
| Startup Time | Cold start: 23 seconds, Hot start: 1 second |
| Antenna | SMA active external antenna (inner thread, inner pin), Gain: 30DBI Frequency: 1555MHz~1580MHz Length: 1m Size: 38*36*13mm |
| Power Consumption | Standby: DC5V/31.64mA Working: DC5V/40.90mA |
| Product Dimensions | 71.4*24*8mm |
| Packaging Dimensions | 136*92*13mm |
| Product Weight | 11.2g |
| Packaging Weight | 59.6g |
Effective Date: March 27, 2025
At OpenELAB, we are committed to providing accurate product descriptions and delivering high-quality products. If you experience any issues with your purchase, please notify us within 60 days of the shipment date.
1. Warranty Disclaimer
Unless explicitly stated in a specific agreement or purchase order, OpenELAB makes no warranties—express or implied—regarding the fitness, suitability, or merchantability of any product for a particular purpose or special use.
2. Warranty Policy
Warranty Period
The standard warranty period for products sold by OpenELAB is 12 months from the date of delivery.
Under this warranty, OpenELAB will make a reasonable effort to repair or replace products free of charge if defects are due to issues with raw materials, design, or manufacturing.
If the defect qualifies under this policy but falls outside the covered scope, reasonable charges may apply for repair or replacement.
After the warranty period, support may still be available at a reasonable fee.
Warranty Exclusions
The warranty does not apply in the following cases:
- The product is beyond the 12-month warranty period.
- Damage due to misuse, improper maintenance or storage, or failure to follow the user guide or manual.
- Issues caused by Force Majeure events (e.g., natural disasters, war, legal changes, etc.).
- Unauthorized repair attempts by the customer.
- The product is not defective but has been opened and is non-returnable by policy.
3. Returns & Refunds
If you're not satisfied with your purchase, you may be eligible for a return or exchange:
- Return for Refund: Within 15 days of receipt (unopened).
- Return for Replacement: Within 30 days of receipt (damaged or defective).
- Exchange Window: Up to 30 days from receipt.
Please email us at info@openelab.io for a return authorization before sending anything back.
Return Conditions
- Items must be in original, clean, and mint condition with packaging intact.
- Returns of damaged, used, scratched, modified, or programmed items will not be accepted.
- Include the receipt, a brief note with your name, order number, and reason for return.
Shipping & Fees
- Customers are responsible for return shipping to our warehouses in Europe, the US, or China.
- Refunds may be subject to additional shipping fees unless the return is due to our error.
- A flat €8 shipping fee will be deducted for returned items that originally qualified for free shipping.
Payment Platform Fees
For refunds processed through third-party platforms such as PayPal or Braintree, a standard 3.5% service fee may be deducted to cover payment processing costs.
