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gps notes

Adafruit Ultimate GPS HAT for Raspberry Pi A+/B+/Pi 2/Pi 3 – Mini Kit – US$45
https://www.adafruit.com/product/2324

Ultimate GPS Module Tutorial
https://learn.adafruit.com/adafruit-ultimate-gps

PDF File
https://cdn-learn.adafruit.com/downloads/pdf/adafruit-ultimate-gps-hat-for-raspberry-pi.pdf?timestamp=1556509130

Command Set
https://cdn-shop.adafruit.com/datasheets/PMTK_A11.pdf

GlobalTop GPS chip datasheet
https://cdn-shop.adafruit.com/datasheets/GlobalTop-FGPMMOPA6H-Datasheet-V0A.pdf

Tutorial, Schematic etc
https://learn.adafruit.com/adafruit-ultimate-gps-hat-for-raspberry-pi/downloads

Includes

Also include 1 x Brass M2.5 Standoffs for Pi HATs – Black Plated – Pack of 2 ($0.75)
Also include 1 x CR1220 12mm Diameter – 3V Lithium Coin Cell Battery ($0.95)
Also include 1 x GPS Antenna – External Active Antenna – 3-5V 28dB 5 Meter SMA ($14.95)
Also include 1 x SMA to uFL/u.FL/IPX/IPEX RF Adapter Cable ($3.95)

Description

It’s 10PM, 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 on it, so you can add precision time and location to your Raspberry Pi Model Pi 3, Pi Zero, A+, B+, or Pi 2 & 3

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 Raspberry Pi is off!

PPS output on fix, by default connected to pin #4

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

We spun up a HAT based on our Ultimate GPS, added a coin-cell holder for RTC usage, break-outs for all the Raspberry Pi’s extra pins, and plenty of prototyping area for adding LEDs, sensors, and more.

Please note, this HAT takes over the Raspberry 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 composite or HDMI monitor and keyboard to log in, or use ssh to connect over the network to your Pi. Read up on our tutorial for more information on how to use this fine HAT

Comes as a fully assembled GPS + PCB and an additional 2×20 GPIO header. Some light soldering is required to attach the 2×20 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 or a slim ultra-low-profile header.

To make air-shipping eaiser, this HAT does not come with a 12mm coin battery! A CR1220 will let you use the real-time-clock capability of the GPS HAT, you can pick one up locally or order one from us.

.END

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