G28U7FTTL Replace VK16E

This is an all-in-one plug-and-play, dirt simple module. It works on 5 volt or 3.3 volt. At 9600 baud it spits out a standard GPS string that you can chew up and spit out using the TinyGPSPlus library (ignore warnings if you're trying and esp8266 wemos mini D1, it works fine with that also).If you read other posts you might see that there is a problem using SoftSerial, that is not currently a problem anymore and has nothing to do with this module in particular.There is a blinking green LED that I haven't figured out how to turn off yet, and the white and yellow wires do not need to be attached using Arduino.Nothing to complain about! Compact and it works.I'm only using it to generate a pulse signal for a motorcycle speedometer unit that has failed, so the green LED will never show anyway.Happy making!

Solid GPS with good indoor performance under a ceramic tile roof and stucco (concrete-over-chicken wire frame) walls. Accurate enough, though altitude determination fluctuates by 1-3 meters at times.

Update:An excellent replacement for the VK16E module. As noted below, the G28U7FTTL is fully documented and worked as perfectly as the VK16E module. Great price and an excellent GPS module.Note: The following information was for the original VK16E module. The G28U7FTTL is fully documented.- End update:Works perfectly. The only problem I had was there is no datasheet or pinout description included. After some Googling, I found the wiring for my version (there seem to be various versions):Yel - BOOTBlk - GNDGrn - RXDABlu - TXDARed - VCCWht - Time Standard Pulse OutYou can ignore the BOOT and Time Std leads for basic GPS operations. It's a neat, tiny device that's perfect for clocks or small GPS locator projects.

I was afraid to try this GPS module at first, but after setting it up and getting it to work, this device has not proven me wrong yet. When first setting it up, there was an issue with no data being read, but once i switched the examples GPS baud rate from 4800 to 9600, the device worked well. The location data is provided me is very accurate, it was even able to pinpoint the correct location its located within my house.So far, nothing to complain about with this device, and now that I know it works, I will definitely be using this more for any IoT projects i have in mind, I think this would work well for geo-fencing some of my current electrical projects.I'm not sure if this device will withstand the tests of time, but for now the device works well.

I didn't do much homework before buying this. I had done a few Arduino Starter Kit tutorials and was like, 'OK let's get GPS data'. This ins't for beginners. DIY mall has minimal documentation (to be polite), and the best explanation of a bread board mapping I found for this product was user-submitted here on amazon. There's too many varying degrees of github code right now and too few sets of directions to make this "cost/space-saving" chip work it for a new. Go out and get yourself a shield board, even if they don't with a sensor like this that you (if like me) won't know how to wire in yourself.

I used the TinyGPS library and the examples and the units worked right out of the box. Cold startup time is around 20 seconds, but once they are on and repowered GPS locking is around 2 sec.Note the RX TX lines are 3.3 volts so you will need a voltage divider if connecting the TX line from an Arduino to the RX of the GPS unit. I don't connect this line. Basically I only connect Vcc to +5, Gnd to Gnd and the GPS TX to arduino RX.Note the example sketches with the TinyGPS need some changes 1) SoftwareSerial pins (make sure you set those values) and the baud rate for the GPS unit is 9600Attached is a GPS track, I'll say the accuracy is around 10 feet.

Excellent reception, durable, works well. Accuracy is fairly good. Speed and altitude is not accurate.

This unit uses about half the power of comparable u-Blox NEO 6 modules, but has comparable satellite tracking ability and slightly faster lock times. It's smaller than any other unit with a 25x25x4mm patch antenna. And the shield covering nearly the entire circuit board reduces RF interference with nearby radio receivers. I installed one in a Uniden BCD436 HP handheld scanner to eliminate the need for connecting a clunky external GPS that needs an additional power supply.