Adafruit learning system PA1010D Manuel utilisateur

Adafruit Mini GPS PA1010D Module

Created by Kattni Rembor

Last updated on 2021-10-22 11:38:03 AM EDT

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Guide Contents
Guide Contents
Overview
Pinouts
GPS Module
Power Pins
I2C Data Pins
Other Pins
UART Serial Data Pins
LEDs
Optional Coin Cell
Arduino I2C Usage
Wiring
Installation
Echo Test Demo
Arduino UART Usage
Wiring
Installation
Echo Test Demo
Hardware UART
CircuitPython & Python Setup
CircuitPython Microcontroller Wiring
I2C Interface
UART Interface
Python Computer Wiring
I2C Interface
UART Interface
USB-to-Serial Cable Interface
Hardware UART Interface
CircuitPython Installation of GPS Library
Python Installation of GPS Library
Python Docs
CircuitPython & Python I2C Usage
CircuitPython Microcontroller Usage
Linux, Computer or Raspberry Pi Usage
Echotest Example
CircuitPython & Python UART Usage
CircuitPython Microcontroller
Linux/Computer/Raspberry Pi with Python
Example Parsing Code
GPS Example Code Explained
Downloads
Files:
Schematic
Fab Print
© Adafruit Industries https://learn.adafruit.com/adafruit-mini-gps-pa1010d-module Page 2 of 35

Overview

This miniature GPS breakout is only 1" x 1" (~ 25mm x 25mm) but houses a complete GPS/GNSS solution

with both I2C and UART interfaces. There's even an antenna on top so it's plug and play!

Support for GPS, GLONASS, GALILEO, QZSS

-165 dBm sensitivity, up to 10 Hz updates

Up to 210 PRN channels with 99 search channels and 33 simultaneous tracking channels

5V friendly design and only 30mA current draw

Breadboard-able, with 4 mounting holes

UART

and

I2C interfaces, pick whichever you like most!

RTC battery-compatible

PPS output on fix ±20ns jitter

Internal patch antenna

Low-power and standby mode with WAKE pin

The breakout is built around the MTK3333 chipset, a reliable, high-quality GPS module that can handle up

to 33 simultaneous tracking channels, has an excellent high-sensitivity receiver (-165 dBm tracking!), and a

built in antenna. It can do up to 10 location updates a second for high speed, high sensitivity logging or

tracking. Power usage is incredibly low, only 30 mA during navigation.

Best of all, we added all the extra goodies you could ever want: a ultra-low dropout 3.3V regulator so you

can power it with 3.3-5VDC in, 5V level safe inputs on UART and I2C, a footprint for optional CR1220 coin

cell to keep the RTC running and allow warm starts, a green power LED and a tiny red PPS LED. The LED

blinks at about 1Hz when a fix is found and is off when no fix.

Unlike our Ultimate GPS modules, this module does not have the ability to connect an external antenna,

it's designed to be as small as possible for compact projects.

As with all Adafruit breakouts, we've done the work to make this GPS module super easy to use. We've

put it on a breakout board with the required support circuitry and connectors to make it easy to work with,

and is now a trend we've added SparkFun Qwiic (https://adafru.it/Fpw) compatible STEMMA

QT (https://adafru.it/Ft4) JST SH connectors that allow you to get going without needing to solder. Just

use a STEMMA QT adapter cable (https://adafru.it/FA-), plug it into your favorite micro or Blinka supported

SBC and you're ready to rock!

Comes with one fully assembled and tested module, a piece of header you can solder to it for bread-

boarding, and a CR1220 coin cell holder. A CR1220 coin cell is not included, but we have them in the

shop if you'd like to use the GPS's RTC (http://adafru.it/380)

Pinouts

This GPS module can be used with I2C or UART. Let's take a look!

GPS Module

The PA1010D GPS module with built-in antenna is

located in the center of the board. It has all kinds of

features!

Support for GPS, GLONASS, GALILEO, QZSS

-165 dBm sensitivity, up to 10 Hz updates

Up to 210 PRN channels with 99 search channels

and 33 simultaneous tracking channels

UART

and

I2C interfaces, pick whichever you like

most!

PPS output on fix ±20ns jitter

Internal patch antenna

Low-power and standby mode with WAKE pin

Note: Due to the sensitivity of the built in antenna, the

PA1010D Mini GPS module may need a more

unobstructed view of the sky than other GPS modules. If

you are having trouble getting a fix, try moving the

module to a clear spot with the antenna pointing up at the

sky.

Power Pins

VIN - power input, connect to 3-5VDC. It's important

to connect to a

clean and quiet

power supply. GPS's

are very sensitive, so you want a nice and quiet

power supply. Don't connect to a switching supply if

you can avoid it, an LDO will be less noisy! This

module only draws 30mA current during navigation

GND - power and signal ground. Connect to your

power supply and microcontroller ground.

Optional:

3Vo - is the output from the onboard 3.3V regulator.

If you have a need for a clean 3.3V output, you can

use this! It can provide at least 100mA output.

I2C Data Pins

SCL - this is the I2C clock pin, connect to your

microcontroller or computer's I2C clock line.

SDA - this is the I2C data pin, connect to your

microcontroller or computer's I2C data line.

These pins have 10K pullups to Vin. They are level shifted

so you can use 3 or 5V logic

On both sides in the middle are the Sparkfun

Qwiic (https://adafru.it/Fpw) compatible STEMMA

QT (https://adafru.it/Ft4) JST SH connectors, for

using with I2C. Use with any of the STEMMA QT

cables available in the Adafruit shop to connect this

breakout to your project without needing to solder!

Other Pins

RST - When pulled to ground, this will put the chip

in the module into reset. Handy when you want to

start with a completely clean setup.

PPS is a "pulse per second" output. Most of the time

it is at logic low (ground) and then it pulses high

(3.3V) once a second, for 50-100ms, so it should be

easy for a microcontroller to sync up to it

WAKE - This pin works with low power and standby

modes. Check the datasheet for more information!

UART Serial Data Pins

TXO - the pin that transmits data

from

the GPS

module to your microcontroller or computer. It is

3.3V logic level. Data comes out at 9600 baud 8N1

by default

RXI - the pin that you can use to send data

the

GPS. This pin is level shifted so you can use 3-5V

logic. By default it expects 9600 baud data by

default.

LEDs

There are two LEDs on the board.

ON - Green power LED. Lit when the board is

powered

PPS - Red PPS LED, blinks at about 1Hz when a fix is

found and is off when no fix.

Optional Coin Cell

The back has a footprint for an optional coin cell battery.

The board ships with a CR1220 coin cell holder that can

be soldered onto the back. CR1220 battery not included.

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