GT-U7 GPS Module Navigation Satellite Positioning NEO-6M Arduino GPS Receiver Compatible with 51 Microcontroller STM32 Arduino UNO R3 with Antenna High Sensitivity Suitable for Vehicles

This GT-U7 module is idiot simple to set up, plug and play as they say. USB-C connector on board, just pop it into your device and it'll be detected. The IPX antenna connection was kind of annoying to get seated for my large fingers but I got there. I tried it on Windows and although it works, Google Earth never finds it because it's never looking at a high enough COM port; Googling suggests this is a problem with the software Earth uses to interface with GPS units. You can probably get around it by assigning a lower COM port to the device; I didn't care enough to deal with that. My real use case was plugging it into a Raspberry Pi Zero, which is similarly easy, it shows up at /dev/ttyACM0 and GPSd sees it right away and provides positioning. What I *really* wanted it for was timing, but I'm having some trouble with that. I thought the PPS signal was emitted over USB and it kind of looks like it is, but I can't get chrony to use it. Probably user error. There are dozens of tutorials online about using a GPS for this but they're all going about it in different ways, I guess it's just a matter of trying each one until you get it. Since the module has a PPS pin I was considering just running a jumper to a GPIO port on the Pi while keeping the module running via USB, but I'm not sure if it'll actually emit a PPS signal from the pin *and* send NMEA to GPSd over USB. A thing for future me to mess with. Anyway I'm happy with the device.

This chip is small but powerful. There are a few important things you need to consider with this chip. First is has no manual, instructions, guidance at all. I got a chip in a bag. Second, it has a USB interface that is the older Micro-B style and not the newer USB-C. It has 5 pins on the card, PPS, TXD, RXD, GND, and VCC. So if you don't know what these are for and how to use the USB interface, you may want to stay away.