ATGM336H GPS+BDS Dual-Mode Module Flight Control Satellite Positioning Navigator Replacement NEO-M8N NEO-6M for Arduino 2pcs

Gizzle Pizzle Sizzle works excellent

Works good. Fast fix indoors. Can't seem to get GPS+BDS ($PCAS04,3*1A) to work together. Tried various $PCAS commands, but only get GNSS when using the default $PCAS ($PCAS04,3*1A) command. But I wanted BDS anyways, so I used the $PCAS command ($PCAS04,2*1B) to set BDS only. Photo of ATGM336H with black pill f411 using embassy-rs to read and write to 336H.

I was working on a project comparing location fixes by the different satellite constellations. This gps module was included in my testing. I pasted the GPS stream into a chatgpt session and it commented back that the signal was decoding BD signals better than any of the other expensive modules that I was using from various vendors. I suspect that this one is tuned for the BD consultation. It was quick at getting a fix and I had no issues pulling down the data stream over UART as expected. It is a nice, small, inexpensive module that gets the job done for any project needing a location fix.

I needed a small GPS module for an ESP32 project's clock circuity. I wasn't looking for the GPS coordinates, just a precision time source. With the help of an online AI interface, I quickly had the code I needed and it was up and running within minutes! It only required 4 wires to connect to the ESP32. I decided to check it's latitude and longitude capabilities and was surprised to see it resolve about a 3 foot move of the module on my workbench! This module was a great value and met my needs perfectly!

In my experience, this GPS/GNSS module works the best for the T-Deck conversion to the LilyGo T-Deck Plus. Once I soldered the module to the T-Deck’s Grove port on the board, I went to Meshtastic’s website to program it to the LilyGo T-Deck. I went outside, and in about a minute or so, I locked up 15 satellites. I pulled up my coordinates, and it was spot-on accurate. I walked about 8 miles round trip, through Manhattan (NYC), and the module locked-on and held its connection through the entire 8-mile walk. I bought two more modules, which will arrive today, 30-Dec-2024. I’m building a T-Deck Plus for my girlfriend, using this module. I like the red LED light, which indicates the module is on and active. Check 6! /s/ Alfonso Faustino

Offers good sensitivity, reasonably fast acquisition and a rich feature set, possibly competitive with ublox types, although ATGM336H documentation seems harder to come by. Small furnished antenna is limited, but irrelevant if using an external powered antenna anyway. Good value for money.

Great little GPS module. I installed these in 2 T-Decks running Meshtastic. Received good satellite reception. I switched out one of the antennas for an external one and I'm getting 21+ sats now.

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.

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