Home M5Stack GPS/BDS Unit with SMA Antenna (AT6668)

M5Stack GPS/BDS Unit with SMA Antenna (AT6668)

SKU: M5-U190
Sale price 20,95 €
incl. VAT
excl. VAT
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M5Stack GPS/BDS Unit with SMA Antenna (AT6668)

M5Stack GPS/BDS Unit with SMA Antenna (AT6668)

20,95 €

Description

The Unit GPS SMA is a compact GNSS global positioning and navigation unit using the ATGM336H navigation module and AT6668 chipset. With an active external SMA antenna, the Unit GPS SMA provides reliable satellite positioning for embedded devices that need accurate location data.

Compared with earlier GPS units, the Unit GPS SMA supports multi-frequency and multi-system GNSS reception. It can receive GPS/QZSS, BD2, BD3, GLONASS, GALILEO, and QZSS signals, supporting either multi-system joint positioning or single-system positioning with stronger anti-interference performance in weak-signal areas.

Features

  • Unit GPS SMA design with ATGM336H navigation module and AT6668 chipset.
  • Supports GPS/QZSS, BD2, BD3, GALILEO, and GLONASS satellite systems.
  • Multi-frequency and multi-system reception with 50 channels.
  • External active SMA antenna for more stable signal reception.
  • Positioning accuracy under 1.5m (CEP50) and update rate up to 10Hz.
  • UART communication at default 115200bps@8N1 with NMEA0183 4.1 protocol.
  • Two LEGO-compatible holes and Grove PORT.C connection for M5Stack projects.
  • Development support for Arduino, UIFlow, ESP-IDF, and related embedded workflows.

Specifications

Type GNSS global positioning and navigation unit with active external antenna
GNSS chipset AT6668
Navigation module ATGM336H
Supported satellite systems GPS/QZSS/BD2/BD3/GAL/GLO
Frequency bands BDS B1I+B1C; GPS/QZSS/SBAS L1; GALILEO E1; GLONASS R1
Channels 50 channels
Communication UART communication, default 115200bps@8N1
Positioning accuracy <1.5m (CEP50)
Positioning update rate Up to 10Hz
Protocol NMEA0183 4.1
Sensitivity Tracking -162dBm; acquisition -160dBm; cold start -148dBm
Start time Cold start 23 seconds; hot start 1 second
Antenna SMA active external antenna, 30DBI gain, 1555MHz ~ 1580MHz, 1m cable, 38 x 36 x 13mm
Power consumption Standby DC 5V/31.64mA; operating DC 5V/40.90mA
Pin map HY2.0-4P: GND, 5V, UART_RX, UART_TX
Item dimensions 71.4 x 24.0 x 8.0mm
Item weight 11.4g
Package size 170.0 x 120.0 x 9.0mm
Gross weight 55.1g

Applications

  • Vehicle positioning and navigation systems.
  • Wearable devices that need compact GNSS location data.
  • IoT positioning devices and remote tracking equipment.
  • Drones and portable devices using the Unit GPS SMA for satellite positioning.
  • Bus stop announcement systems and other location-aware projects.

Product List

  • 1 x Unit GPS SMA
  • 1 x HY2.0-4P Grove cable (20cm)
  • 1 x Active external antenna

Other Content

The Unit GPS SMA connects through Grove PORT.C with GND, 5V, UART_RX, and UART_TX lines. Before deployment, match the UART pins and antenna placement to the host device and installation environment to improve signal reception and positioning reliability.

Resources

GNSS Unit Product Documentation

GNSS Unit PDF Documentation

GNSS Unit Schematics Image

GNSS Unit Model Size Image

ATGM336H-6N Datasheet

MAX2659 GNSS Low-Noise Amplifier Datasheet

CASIC Multi-mode Satellite Navigation Receiver Protocol Specification PDF

TinyGPSPlus Arduino Library

FAQ

Which satellite systems are supported?

The Unit GPS SMA supports GPS/QZSS, BD2, BD3, GALILEO, and GLONASS positioning systems.

What antenna is included?

The package includes an active external SMA antenna with a 1m cable.

What interface does it use?

The unit uses UART communication through Grove PORT.C, with a default baud rate of 115200bps@8N1.

1. General Shipping Information

  • We provide reliable shipping services with a tracking number for each order.
  • Shipping addresses must be entered in English and should not contain special symbols, so that the courier system can recognize your location correctly.
  • Please make sure your shipping address is accurate before placing your order. We ship strictly according to the address provided at checkout.
  • In-stock orders are usually dispatched within 1 business day after order confirmation.
  • Estimated delivery times refer to the period after dispatch and do not include order processing time, weekends, public holidays, customs inspection, or force majeure delays.
  • If you need to cancel or modify your order, please contact us before the order is marked as “Shipped”. Once shipped, the order cannot be canceled or changed.

🚀 Need Faster Shipping?

If you require expedited shipping, please contact our customer support team at info@upenelab.com for a customized quote based on your destination.

2. Shipping Rates & Options

Shipping rates are calculated based on order value, destination, and available shipping methods. The final available options will be displayed at checkout.

2.1 Germany Domestic Shipping

Shipping Method Order Value Cost Est. Delivery
Deutsche Post €0.00 - €50.00 €4.95 2-4 Business Days
Deutsche Post Over €50.00 Free 2-4 Business Days
DHL Paket
(Faster Delivery)
€0.00 - €50.00 €6.95 1-3 Business Days
DHL Paket
(Faster Delivery)
€50.00 - €100.00 €2.00 1-3 Business Days
DHL Paket
(Faster Delivery)
Over €100.00 Free 1-3 Business Days

2.2 Selected EU Countries / Regions

Available EU shipping destinations are shown at checkout based on your shipping address. For orders shipped to selected EU countries or regions outside Germany, we use FedEx Regional Economy.

Shipping Method Order Value Cost Est. Delivery
FedEx Regional Economy €0.00 - €100.00 €7.95 3-5 Business Days
FedEx Regional Economy Over €100.00 Free 3-5 Business Days

EU orders may be fulfilled from our Munich warehouse or, when applicable, from our Shenzhen warehouse depending on inventory availability. For EU member states, OpenELAB covers applicable import duties and taxes under DDP service where required.

2.3 United States

Region Shipping Method Order Value Cost Est. Delivery
Continental U.S.
(50 States)
USPS Ground Advantage €0.00 - €45.00 €4.95 3-7 Business Days
USPS Ground Advantage Over €45.00 Free 3-7 Business Days
USPS Priority Mail €0.00 - €45.00 €16.95 1-4 Business Days
USPS Priority Mail Over €45.00 €14.95 1-4 Business Days
Non-Continental U.S.
(AK, HI, PR, etc.)
USPS Ground Advantage €0.00 - €60.00 €6.95 5-9 Business Days
USPS Ground Advantage Over €60.00 Free 5-9 Business Days

Non-Continental U.S. regions include Alaska, American Samoa, Guam, Hawaii, the Marshall Islands, the Northern Mariana Islands, Palau, Puerto Rico, the U.S. Virgin Islands, and U.S. Armed Forces addresses.

2.4 International Destinations Outside the EU

For selected international destinations outside the EU, including Switzerland, the United Kingdom, and Norway, shipping rates are as follows:

Order Amount Shipping Cost
€0.00 - €300.00 €19.95
Over €300.00 Free

For non-EU destinations, import duties, taxes, and customs fees may be charged by the destination country and are the responsibility of the recipient.

3. Warehouses & Fulfillment

Our products may be stored in our Munich, Arlington, and Shenzhen warehouses. The actual shipping warehouse depends on product availability and destination.

3.1 Munich Warehouse

For products stored in our Munich warehouse, we use Deutsche Post or DHL Paket for domestic deliveries within Germany. For selected EU destinations outside Germany, we use FedEx Regional Economy.

3.2 Arlington Warehouse

For products stored in our Arlington warehouse, we use USPS or UPS for deliveries within the United States.

3.3 Shenzhen Warehouse

For pre-order items or products fulfilled directly from our Shenzhen warehouse, we arrange reliable international shipping based on destination and inventory status. For EU member states, OpenELAB covers applicable import duties and taxes under DDP service where required.

4. Inventory, Pre-orders & Split Shipments

  • Inventory Status: Please check the product page for real-time stock information. If an item is out of stock in our local warehouses, it may be marked as “Pre-order”.
  • Pre-order Fulfillment: Pre-order items may be shipped directly from Shenzhen or restocked to a local warehouse first before final delivery.
  • Split Shipments: If your order contains both in-stock and pre-order items, we may ship them separately. No additional shipping fee will be charged for split shipments caused by our fulfillment arrangement.

5. Customs, Taxes & Delivery Issues

5.1 Customs and Taxes

For EU Member States:
Whether shipped from Germany or China, OpenELAB covers applicable import duties and taxes under DDP service where required. Customers in EU member states should not be charged additional import duties or VAT upon delivery.

Important Notice for Non-EU Countries:
For destinations outside the European Union, such as Switzerland, Norway, and the United Kingdom, import duties, taxes, and customs fees may be charged by local authorities upon delivery. These fees are the responsibility of the recipient.

5.2 Damaged, Delayed, or Lost Parcels

Please inspect your parcel upon delivery where possible. If you notice visible damage, please report it to the courier and contact us as soon as possible. This does not affect your statutory consumer rights.

If your parcel is delayed, lost, returned to sender, or the tracking information has not updated for an unusual period of time, please contact us at info@upenelab.com. We will assist you in checking the shipment status with the courier.

5.3 Incorrect Address or Failed Delivery

If a parcel cannot be delivered due to an incorrect or incomplete address provided by the customer, refusal of delivery, or failure to collect the parcel, additional shipping or return costs may apply.

6. VAT

For orders within the EU, VAT is collected at checkout according to the applicable destination rules. No additional VAT should be collected upon delivery for EU member state orders covered under our DDP shipping arrangement.

Customer Reviews

Based on 3 reviews
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Dakota Hughes
M5Stack GPS/BDS Unit with SMA Antenna (AT6668): useful after setup

After working with M5Stack GPS/BDS Unit with SMA Antenna (AT6668) for a while the overall experience felt stable and predictable. The result was good after a little adjustment during the first configuration.

K
Kendall Price
M5Stack GPS/BDS Unit with SMA Antenna (AT6668): solid build quality

The M5Stack GPS/BDS Unit with SMA Antenna (AT6668) arrived in good condition and fitted neatly into my existing setup. Integration went smoothly and I have not encountered any significant issues.

F
Finley Scott
M5Stack GPS/BDS Unit with SMA Antenna (AT6668): smooth first setup

I added M5Stack GPS/BDS Unit with SMA Antenna (AT6668) to a recent project and found the initial setup straightforward. It has remained dependable and delivered the result I expected.