Unit GPS v1.1
Description
GPS Unit v1.1 is a GNSS global positioning navigation unit, integrating the high-performance CASIC navigation chip AT6668 and signal amplifier chip MAX2659, with a built-in ceramic antenna, providing more precise and reliable satellite positioning services. Compared to previous products, AT6668 supports multi-frequency and multi-mode GNSS signal reception, receiving signals from multiple satellite navigation systems (including GPS, BD2, BD3, GLONASS, GALILEO, and QZSS), supporting multi-system combined positioning as well as single-system standalone positioning. It has enhanced anti-interference capability and higher positioning accuracy, allowing it to quickly acquire high-precision location information in areas with weak signals. This module is widely applicable in high-precision positioning applications, such as in-vehicle positioning and navigation, IoT positioning devices, and more.
Features
- Supports multiple satellite navigation systems (GPS/QZSS/BD2/BD3/GAL/GLO)
- Multi-frequency and multi-system reception
- Multi-channel
- 2x LEGO-compatible holes
- Programming platforms: Arduino, UIFlow, etc.
Contents
- 1x Unit-GPS v1.1
- 1x HY2.0-4P Cable (20CM)
Applications
- In-vehicle positioning and navigation
- Wearable devices
- IoT positioning devices
- Drones
- Portable devices
- Public transportation station reporting
Specifications
| Specifications | Parameter |
|---|---|
| SoC | AT6668 |
| Supported Systems | GPS/QZSS/BD2/BD3/GAL/GLO Frequencies: 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) |
| Update Rate | Max 10Hz |
| Protocol | NMEA0183 4.1 |
| Sensitivity | Tracking: -162dBm, Acquisition: -160dBm, Cold Start: -148dBm |
| Start Time | Cold Start: 23 seconds, Hot Start: 1 second |
| Power Consumption | DC5V/31.64mA |
| Product Size | 48*24*8mm |
| Package Size | 136*92*9mm |
| Product Weight | 12.3g |
| Package Weight | 17.7g |
Related Links
Schematic
PinMap
| GPS Unit v1.1 | RXD | TXD | VCC | GND |
|---|---|---|---|---|
| M5Core (PORT C) | GPIO16 | GPIO17 | 5V | GND |
| M5Core2 (PORT C) | GPIO13 | GPIO14 | 5V | GND |
| M5CoreS3 (PORT C) | GPIO18 | GPIO17 | 5V | GND |
Model Size
Examples
Arduino
Version Comparison
| Product Compare |
Unit-GPS v1.1
 |
Unit-GPS
 |
|---|---|---|
| SoC | AT6668 | AT6558 |
| Supported Systems | BD2/BD3/GPS/GLONASS/GALILEO/QZSS | BDS/GPS |
| Positioning Accuracy | 1.5m | 2.5m |
| Channels | 50 channels (CEP50) | 32 channels (CEP50) |
| Sensitivity | Tracking: -162dBm, Acquisition: -160dBm, Cold Start: -148dBm | Tracking: -162dBm, Acquisition: -148dBm, Cold Start: -146dBm |
| Cold Start | Cold Start: 23 seconds, Hot Start: 1 second | Cold Start: 35 seconds, Hot Start: 1 second |
Video
- Unit-GPS v1.1 Product Introduction