# Adafruit Ultimate GPS HAT for Raspberry Pi ## Overview ![](https://cdn-learn.adafruit.com/assets/assets/000/021/930/medium800/adafruit_products_mainpix.jpg?1419626390) It's 10PM, do you know where your Pi is? If you had this Pi HAT, you would! This new HAT from Adafruit adds our celebrated Ultimate GPS on it, so you can add precision time and location to most Raspberry Pi boards (anything with the 40-pin GPIO “HAT” header; early Pi models with a 26-pin header are not compatible, nor are bare Compute Module boards). Here's the low-down on the GPS module: - -165 dBm sensitivity, 10 Hz updates, 66 channels - Only 20mA current draw - Built in Real Time Clock (RTC) - slot in a CR1220 backup battery for 7-years or more of timekeeping even if the Pi is off! - PPS output on fix, by default connected to pin #4 - We have received reports that it works up to ~32Km altitude (the GPS theoretically does not have a limit until 40Km) - Internal patch antenna which works quite well when used outdoors + u.FL connector for external active antenna for when used indoors or in locations without a clear sky view - Fix status LED blinks to let you know when the GPS has determined the current coordinates **This HAT takes over the Pi's hardware UART to send/receive data to and from the GPS module**. So, if you need to use the RX/TX pins with a console cable, you cannot also use this HAT. Instead, you'll have to use a monitor and keyboard to log in, or use _ssh_ to connect over the network to your Pi. Comes as a fully assembled GPS + PCB and an additional 2x20 GPIO header. Some light soldering is required to attach the 2x20 GPIO header to the HAT but it's fast and easy for anyone with a soldering iron and solder. [You can also swap the plain female header we have with a 'stacky' type that lets you plug in a hat or GPIO cable on top](https://www.adafruit.com/products/2223) or a [slim ultra-low-profile header.](https://www.adafruit.com/product/2243) _Even with a low-profile header installed, the GPS module itself adds sufficient thickness that the Pi + HAT won’t fit in most close-fitting Pi cases. If full protection from the elements is required, you’ll have to improvise or find a [larger plastic enclosure](https://www.adafruit.com/product/905), perhaps with cable glands._ - [Next Page](https://learn.adafruit.com/adafruit-ultimate-gps-hat-for-raspberry-pi/pinouts.md) ## Featured Products ### Adafruit Ultimate GPS HAT for Raspberry Pi A+/B+/Pi 2/3/4/Pi 5 [Adafruit Ultimate GPS HAT for Raspberry Pi A+/B+/Pi 2/3/4/Pi 5](https://www.adafruit.com/product/2324) It's 10 PM, do you know where your Raspberry Pi is? If you had this GPS HAT, you would! This new HAT from Adafruit adds our celebrated Ultimate GPS, so you can add precision time and location to your Raspberry Pi Model Pi 3, Pi Zero, A+, B+, or Pi 2, 3, 4, &... Out of Stock [Buy Now](https://www.adafruit.com/product/2324) [Related Guides to the Product](https://learn.adafruit.com/products/2324/guides) ### GPS Antenna - External Active Antenna - 3-5V 28dB 5 Meter SMA [GPS Antenna - External Active Antenna - 3-5V 28dB 5 Meter SMA](https://www.adafruit.com/product/960) Give your Ultimate GPS V3 a boost with this external active antenna. This GPS antenna draws about 10mA and will give you an additional 28 dB of gain. It's got a 5 meter long cable so it will easily reach wherever you need it to. The antenna is magnetic so it will stick to the top of a car... In Stock [Buy Now](https://www.adafruit.com/product/960) [Related Guides to the Product](https://learn.adafruit.com/products/960/guides) ### SMA to uFL/u.FL/IPX/IPEX RF Adapter Cable [SMA to uFL/u.FL/IPX/IPEX RF Adapter Cable](https://www.adafruit.com/product/851) This RF adapter cable is super handy for anyone doing RF work. Often times, small electronics save space by having a pick-and-placeable u.FL connector (also called uFL, IPEX, IPAX, IPX, MHF, and AM). But most antennas have SMA or RP-SMA connectors on them. This little cable will bridge the... In Stock [Buy Now](https://www.adafruit.com/product/851) [Related Guides to the Product](https://learn.adafruit.com/products/851/guides) ### CR1220 12mm Diameter - 3V Lithium Coin Cell Battery [CR1220 12mm Diameter - 3V Lithium Coin Cell Battery](https://www.adafruit.com/product/380) These are the highest quality & capacity batteries, the same as shipped with the iCufflinks, iNecklace, Datalogging and GPS Shields, GPS HAT, etc. One battery per order (you'll want one battery per cufflink or pendant.) Brand may vary but all battery brands are verified... In Stock [Buy Now](https://www.adafruit.com/product/380) [Related Guides to the Product](https://learn.adafruit.com/products/380/guides) ## Related Guides - [Adafruit Class Library for Windows IoT Core](https://learn.adafruit.com/adafruit-class-library-for-windows-iot-core.md) - [Adafruit GPS Hat in Windows IoT Core](https://learn.adafruit.com/adafruit-gps-hat-in-windows-iot-core.md) - [reef-pi Guide 1: Setup and Demonstration](https://learn.adafruit.com/reef-pi-installation-and-configuration.md) - [Adafruit TCA9548A 1-to-8 I2C Multiplexer Breakout](https://learn.adafruit.com/adafruit-tca9548a-1-to-8-i2c-multiplexer-breakout.md) - [Adafruit 3.5" 480x320 TFT FeatherWing](https://learn.adafruit.com/adafruit-3-5-tft-featherwing.md) - [Adafruit FT232H With SPI & I2C Devices](https://learn.adafruit.com/adafruit-ft232h-with-spi-and-i2c-libraries.md) - [Adafruit OV5640 Camera Breakouts](https://learn.adafruit.com/adafruit-ov5640-camera-breakout.md) - [Adafruit Infrared IR Remote Receiver](https://learn.adafruit.com/adafruit-infrared-ir-remote-receiver.md) - [Adafruit VS1053 MP3/AAC/Ogg/MIDI/WAV Codec Breakout Tutorial](https://learn.adafruit.com/adafruit-vs1053-mp3-aac-ogg-midi-wav-play-and-record-codec-tutorial.md) - [DS1307 Real Time Clock Breakout Board Kit](https://learn.adafruit.com/ds1307-real-time-clock-breakout-board-kit.md) - [Introducing ItsyBitsy M0 Express](https://learn.adafruit.com/introducing-itsy-bitsy-m0.md) - [Ultrasonic Sonar Distance Sensors](https://learn.adafruit.com/ultrasonic-sonar-distance-sensors.md) - [Adafruit Qwiik/STEMMA QT 5 Port Hub](https://learn.adafruit.com/qwiik-stemma-qt-5-port-hub.md) - [Adafruit Stepper + DC Motor FeatherWing](https://learn.adafruit.com/adafruit-stepper-dc-motor-featherwing.md) - [Adafruit GA1A12S202 Log-scale Analog Light Sensor](https://learn.adafruit.com/adafruit-ga1a12s202-log-scale-analog-light-sensor.md)