HiLetgo NEO-7M GPS Satellite Positioning Module for Arduino STM32 C51 Replace NEO-6M 3.3V/5V Power Supply

Fine product

As others have noted, the attached patch antenna pretty much does not work at all. Even leaving it outside for 20 minutes barely gave me a time signal (I have an RP2040 microcontroller application for displaying the GPS info). I pried off the patch and I though maybe the solder connection was not good, but even soldering a wire to ensure a good connection did not help. There is an onboard MAX2659 LNA for that antenna, so either that is not working properly or there is an issue with its interface to the NEO-7M module. Connecting an active antenna does work ok.

Update: with this GPS antenna: (https://www.amazon.com/dp/B07R7RC96G?ref=ppx_yo2ov_dt_b_product_details&th=1) it appears to a get a lock almost immediately. Antenna is sitting indoors in a non ideal spot. With the built in antenna it didn't even work outside.So I'm raising my score from 1 to 3.5 stars.I am able to see the messages from the module via an Arduino, but it never gets a lock. I updated the agps data and provided an accurate location to help it warm up and obtain a lock, but it still does not. This is true even standing outside. As others have said I suspect the antenna is hot garbage. For comparison, the Adafruit ultimate GPS gets a lock *in my basement* with a completely cold start, with the built in antenna. The antenna on the Adafruit module is significantly smaller as well. I will try an a different antenna and see if that works.I want to use a u-blox module for my project because it (supposedly) can output frequencies other than 1hz on the PPS pin, eg 1MHz. With 1MHz I can get an ultra accurate 1us time tick directly vs having to interpolate 1pps with the much less accurate Arduino clock.

easy to use. accurate. i have used several of these over the past few years for projects and for the price they can't be beat.

Didn't have any issues connecting to Windows via USB to check settings in U-Center (you need to download drivers for Windows). This module doesn't have flash so you cannot update the firmware and setting changes will be lost once the onboard battery drains. Connected the GPS to a Raspberry Pi via serial and PPS, again, no issues, it worked fine. The internal antenna seems fine as well, able to get a 3D Fix outside and it maintained it when inside. A plus is the SMA connector so there is the option to connect an external antenna. On the Raspberry Pi I used this as a PPS source for NTP. The only issue I did have was trying to change from GPS to GLONASS, I could not get that to work in either U-Center or using ubxtool commands on the Raspberry Pi.Here is the version information for the module.BX-MON-VER:swVersion 1.00 (59842)hwVersion 00070000extension PROTVER 14.00extension GPS;SBAS;GLO;QZSSAttached are picture of xgps output while the module is indoors with no external GPS antenna and the output of ntpq -p.

Got burned by another unit which did not work. This and an external GPS antenna got a fix within a few minutes. USB interface worked out of the box on linux as well. Great for troubleshooting embedded projects.

Purchased two of these to upgrade a pair of Neo-6M's. I received the infamous "green LED" boards.As mentioned, the on-board patch antenna doesn't work at all on mine. I had to install the SMA connectors and use an actual external GPS antenna.I'll use them for timekeeping or something, but, buyer beware, these are pointless to buy for drones and applications where you can't deal with an external antenna.The vendor needs to fully represent this fact to buyers, or destroy them.I'm also surprised someone hasn't posted a fix for this issue as yet--I'm thinking it may be a defective antenna.Two stars, do not recommend.

I purchased 2 of these modules to work with an esp8266 mcu. It works great. I am using it with a Wemos D1 Mini with ESPEASY.