adafruit learning system PA1010D Manual de usuario
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
© Adafruit Industries https://learn.adafruit.com/adafruit-mini-gps-pa1010d-module Page 3 of 35
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
© Adafruit Industries https://learn.adafruit.com/adafruit-mini-gps-pa1010d-module Page 4 of 35
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)
© Adafruit Industries https://learn.adafruit.com/adafruit-mini-gps-pa1010d-module Page 5 of 35
© Adafruit Industries https://learn.adafruit.com/adafruit-mini-gps-pa1010d-module Page 6 of 35
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.
© Adafruit Industries https://learn.adafruit.com/adafruit-mini-gps-pa1010d-module Page 7 of 35
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!
© Adafruit Industries https://learn.adafruit.com/adafruit-mini-gps-pa1010d-module Page 8 of 35
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
to
the
GPS. This pin is level shifted so you can use 3-5V
logic. By default it expects 9600 baud data by
default.
LEDs
© Adafruit Industries https://learn.adafruit.com/adafruit-mini-gps-pa1010d-module Page 9 of 35
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.
© Adafruit Industries https://learn.adafruit.com/adafruit-mini-gps-pa1010d-module Page 10 of 35
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