Teyleten Robot ATGM336H GPS+BDS Dual-Mode Module Flight Control Satellite Positioning Navigator Replacement NEO-M8N NEO-6M for Arduino

Easy to install in the T-deck and other compatible radios. Only 4 connections: Vcc, gnd, TX and Rx. Must be soldered and works with most ESP32 radios.

Added GPS to my Lilygo T-Deck lora devices - working perfectly

This is an inexpensive alternative to name-brand u-blox M8Q/M10Q GPS/GNSS modules (also available on Amazon). I haven't compared this feature-for-feature to the more expensive devices - and they'll likely exceed the capabilities of what this can do - but it'll probably do just fine for most hobbyist uses.I was able to use this without any special magic on an ESP32 project using the TinyGPSPlus library. I have no problems getting a position fix even though I'm doing my development work indoors (drywall ceiling, insulation, plywood-and-shingle roof).This is really small; the module itself is about the size of a US dime.If I have any issue at all, it's that the antenna is separate from the module, with a short cable with a U.FL connector on one end to connect to the board. I'm used to the self-contained u-blox devices that are (larger) all-in-one modules so I don't have to figure out where to put the antenna.But: Depending on your use you may find that to be an advantage, since that means you can bury the module deep in your project and then use the short length of cable to position the antenna with a better view of the sky, or perhaps even use a different antenna for greater sensitivity.All-in-all I'm very happy with this module and am ordering another for my next project.

This item was tested with ESP32 D1 Mini, if you do not plan on sending commands to the GPS module you only need to hook up the TX pin.The GPS Module takes about 12 minutes to download the data from the satellites (slow bit rate). Do yourself a favor and power this up near a window and wait until the red LED starts to flash to read data.The only reason I gave this 4 stars was due to the battery on the module not holding the volatile memory very long. I will probably replace it with a CR2302.The sample code below will connect to the GPS module and output the information over the ESP serial port, you can use this to connect to U-Center or GnssToolKit3.#include <SoftwareSerial.h>#include <TinyGPSPlus.h>TinyGPSPlus gps;SoftwareSerial mySerial(16, 17); //GPS (RX, TX) check correct pin assignments and baud ratedouble last_lat = 0;double last_lng = 0;void setup() { //GPS Serial Monitor mySerial.begin(9600); //ESP Serial Monitor Serial.begin(115200); Serial.println("GPS start");}void loop() { while (mySerial.available()) { Serial.write(mySerial.read()); }}If you are using sample code from the internet that send a command make sure you understand with the command does, it is possible that you will need to factory reset the device to make it work correctly again.For factory reset in Arduino IDE use (in void setup):while (mySerial.available()) { mySerial.print("$PCAS10,3*1F\r\n");}Description PCAS Command (*nix)save configuration $PCAS00*01 echo -en '$PCAS00*01\r\n' > /dev/ttyUSB0hot restart $PCAS10,0*1C echo -en '$PCAS10,0*1C\r\n' > /dev/ttyUSB0cold restart $PCAS10,2*1E echo -en '$PCAS10,2*1E\r\n' > /dev/ttyUSB0factory reset $PCAS10,3*1F echo -en '$PCAS10,3*1F\r\n' > /dev/ttyUSB0stationary mode $PCAS11,1*1C echo -en '$PCAS11,1*1C\r\n' > /dev/ttyUSB0GPS Only $PCAS04,1*18 echo -en '$PCAS04,1*18\r\n' > /dev/ttyUSB0BSD Only $PCAS04,2*1B echo -en '$PCAS04,2*1B\r\n' > /dev/ttyUSB0GPS+BDS $PCAS04,3*1A echo -en '$PCAS04,3*1A\r\n' > /dev/ttyUSB0GPS+GLONASS $PCAS04,5*1C echo -en '$PCAS04,5*1C\r\n' > /dev/ttyUSB0115200 Baud $PCAS01,5*19 echo -en '$PCAS01,5*19\r\n' > /dev/ttyUSB0

I’m using these with my esp32 to make a cheap wardriver that is connected to my android. Used the TinyGPS library examples and expand from there. Very easy to hook up after soldering! Will buy more.