This device worked right out of the box and stably finds 9 satellites. Especially when stationary, longitude and latitude are very constant. The first run took a few minutes before the green light started flashing and reading data, but after that the alert loads in less than 10 seconds. I'm using the TinyGPS library and the code worked fine on my Teensy 3.2. I've used other cheaper GPS modules and the cheaper ones tend to find half the satellite. I recommend this device and will buy more.
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