This LC29H(DA) HAT has L1+L5 dual-frequency and multi-GNSS signal tracking, significantly reducing multipath effects in urban environments and strengthening positioning accuracy with low power consumption. Equipped with a built-in LNA and SAW filter, it has high sensitivity and strong anti-interference capability. Utilising dual-band positioning and RTK technology, it provides centimetre-level high-precision positioning, making it ideal for real-time tracking systems and sharing economy applications, including drones, smart farm machinery, and shared two-wheelers. It supports fast convergence dual-band RTK centimetre-level positioning for high-precision terminal device applications. The HAT features a standard Raspberry Pi 40-pin GPIO extension header, providing compatibility with Raspberry Pi series boards and Jetson Nano. It supports simultaneous tracking of L1+L5 dual-band satellite signals, reducing multipath effects and enhancing positioning accuracy in urban canyons. It also supports concurrent reception of multi-GNSS systems (GPS, BDS, GLONASS, Galileo, and QZSS) while maintaining low power consumption. The built-in low noise amplifier and acoustic surface filter deliver -165dBm high sensitivity and improved anti-interference performance. Comprehensive online development resources and a manual with Python examples for Raspberry Pi and Jetson Nano are included to assist with development. We also have the * LC29H(AA) GPS HAT to improve the positioning performance of service areas * LC29H(BS) GPS/RTK HAT to setup an RTK base station Note: The Raspberry Pi boards are NOT included Features * Standard Raspberry Pi 40PIN GPIO extension header, supports Raspberry Pi series boards, Jetson Nano * Supports simultaneous tracking of L1+L5 dual-band satellite signals, reducing multipath effects in urban canyons and improving positioning accuracy * Supports concurrent receiving of multi-GNSS systems (GPS, BDS, GLONASS, Galileo and QZSS) while maintaining low power consumption * Supports fast convergence dual-band RTK centimetre-level positioning, suitable for high-precision positioning of terminal devices * Built-in low noise amplifier and acoustic surface filter to provide -165dBm high sensitivity and enhance anti-interference performance * Supports multi-frequency active interference cancellation, effectively suppressing or eliminating narrowband signal (WiFi/2/3/4/5G) interference to provide navigation accuracy * A-GNSS (Assisted GNSS) support, reducing the time to first fix (TTFF) with a cold start when powered on to 5 seconds * Support QGNSS software, easy to set various module functions * Onboard battery holder, supports ML1220 rechargeable cell, for preserving ephemeris information and hot starts * Onboard 4 LED indicators for module operating status * Comes with online development resources and manual (Python examples for Raspberry Pi/Jetson Nano) What's on Board * LC29H module * RT9166A-28PXL 5V to 2.8V LDO chip * CP2102N USB to UART chip * Raspberry Pi 40PIN GPIO header For connecting with Raspberry Pi * UART selection jumper A: control the LC29H via USB to UART B: control the LC29H via Raspberry Pi C: access Raspberry Pi via USB to UART * IPEX 1 connector LC29H module antenna connector * Micro USB interface * RT9193-33PB 5V to 3.3V LDO chip * RESET button Reset the LC29H module * Status Indicators PWR: Power Indicator RXD/TXD: UART transceiver indicator PPS: GPS status indicator * NDC7002N I2C voltage translator * ML1220 Battery holder Supports ML1220 rechargeable cell, for preserving ephemeris information and hot start Specifications Frequency Band GPS/QZSS: L1C/A, L5 BDS: B1I, B2a Galileo: E1, E5a GLONASS: L1 Number of Concurrent GNSS GPS/QZSS+BDS+Galileo+GLONASS SBAS (WAAS, EGNOS, MSAS, GAGAN) N/A RTK Function RTK Rover Positioning Accuracy PVT 1m CEP RTK 0.01m+1ppm CEP Navigation Update Rate PVT 1~10Hz RTK 1Hz RAW 1Hz RTK Convergence Time <10s Time to First Fix (AGNSS OFF) Cold Starts 26s Hot Starts 1s Aided Starts 16s Time to First Fix (EASY ON) Time to First Fix (AGNSS ON) Cold Starts 5s Hot Starts 5s Aided Starts 5s Sensitivity Tracking and Navigating -165dBm Re-Acquisition -157dBm Cold Starts -145dBm Velocity Accuracy N/A PPS Accuracy N/A Dynamic Performance Acceleration (Max): 4g Altitude (Max)：10000m Velocity (Max): 500m/s Communication Interface UART(9600~3000000bps, 115200bps by default) I2C(Max 400KHz) Protocol NMEA 0183 V4.10, RTCM 3.x Power Supply 5V Overall Current <40mA@5V (Continue mode) Operating Temperature -40 - 85℃ Dimensions 65 x 30.5mm Connection Example - Raspberry Pi & GPS Antenna Resources * Product Wiki Pinout Package Contents * 1x LC29H (DA) GPS/RTK HAT * 1x 2 x 20-pin female header * 1x GPS External Antenna (D) * 1x IPEX 1 to SMA cable ~17cm * 1x Screws pack https://elecena.pl/product/25915641/lc29h-da-gps-rtk-hat-for-raspberry-pi 2024-05-20 https://elecena.pl/product/25915641/lc29h-da-gps-rtk-hat-for-raspberry-pi 2024-09-18 https://elecena.pl/product/25915641/lc29h-da-gps-rtk-hat-for-raspberry-pi 2024-11-29 https://elecena.pl/product/25915641/lc29h-da-gps-rtk-hat-for-raspberry-pi 2024-11-30 https://elecena.pl/product/25915641/lc29h-da-gps-rtk-hat-for-raspberry-pi 2025-02-13 https://elecena.pl/product/25915641/lc29h-da-gps-rtk-hat-for-raspberry-pi 2025-08-06 https://elecena.pl/product/25915641/lc29h-da-gps-rtk-hat-for-raspberry-pi 2025-11-28 https://elecena.pl/product/25915641/lc29h-da-gps-rtk-hat-for-raspberry-pi 2025-11-29