SparkFun will be closing on Monday for Memorial Day (5/28). Orders placed after 2pm MT on Friday (5/25) will process and ship out on Tuesday (5/29).
The GP-735 is a slim, ultra-high performance, easy to use GPS smart antenna receiver. With -162dBm tracking sensitivity and only 29 second cold start time, the GP735 is a tiny, yet powerful, piece of tech. The slim design makes it ideal for applications where you don’t have a lot of space to work in. Really it’s quite small.
This 56-channel GPS module, based on the uBlox 7th generation chipset, has an operating voltage of 3.3~5.5V, an antenna on board, and connects to your system via TTL serial. The 1Hz update rate is fast enough for the majority of applications (and can be increased to 10Hz if you need) so whether you’re tracking a pet or building an autonomous car, the GP-735 has you covered!
Note: We are carrying the “T” option of this module which is TTL-UART and not USB.
Note: This receiver works with 6-pin 1mm pitch JST type cables and connectors which you can find in the Recommended Products section below!
If a board needs code or communicates somehow, you're going to need to know how to program or interface with it. The programming skill is all about communication and code.
Skill Level: Rookie - You will need a better fundamental understand of what code is, and how it works. You will be using beginner-level software and development tools like Arduino. You will be dealing directly with code, but numerous examples and libraries are available. Sensors or shields will communicate with serial or TTL.
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If it requires power, you need to know how much, what all the pins do, and how to hook it up. You may need to reference datasheets, schematics, and know the ins and outs of electronics.
Skill Level: Competent - You will be required to reference a datasheet or schematic to know how to use a component. Your knowledge of a datasheet will only require basic features like power requirements, pinouts, or communications type. Also, you may need a power supply that?s greater than 12V or more than 1A worth of current.
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Based on 15 ratings:
3 of 3 found this helpful:
This was my first time playing with a GPS on a Raspberry Pi and the GP-735 made it very simple. Just connect power and a serial port (it runs on 3.3v so just direct connect it to the RPi directly) and you’ll immediately start receiving NMEA “sentences”. (A simple “cat /dev/tty0” or similar for your setup will output it to your display).
I was in my “maker space” about 4' from a basement window and this still managed to lock on to the GPS satellites so it seems pretty robust even with a built-in antenna. It’s very small and can really fit anywhere.
It does not come with the cable that plugs into the end so be sure to order that separately…I ordered two just in case.
3 of 3 found this helpful:
We built a small beacon for our high altitude balloon flights using this unit, a PIC chip, and an XBee. The system works great below about 40,000 feet. I specifically purchased this unit because the datasheet says it works to 50,000m. Seems that it might be able to do that, but you have to reprogram the GP-735. The problem is that there is almost zero information about how to do that. We have tracked down a possible solution that we will try. If you are not going to high altitude, then this is a great product. By the way, it will run on much lower voltage than they claim. We have been able to drain our batteries all the way down to 2.5V and still get good performance.
2 of 2 found this helpful:
Using it with an Arduino Uno R3, and NeoGPS, so I can parse out both GPS and Glonass satellites. System works very well.
4 of 5 found this helpful:
Yet to test its functionality but I realized this does NOT come with the JST SH Jumper 6 Wire - 1.75" cable which retail for another $2.95. I did not read carefully and simply expected a $40 dollar GPS module would come with the GPS or the weather shield. I can’t ask for free cables but why not just put it in the package and adjust the price accordingly?
Ordered the cable and the unit. Used my MB500 to power it up and capture and decode the serial output. Copied the lat/long values, converted them to fractional degrees, and entered them into Google maps. Once it found enough satellites and switched to mode 2 it was accurate within a meter or two - dropped the marker right on top of me. Very nice unit.
The receiver works great when connected to my PC via the mini-shield/Pro-Mini and a FTDI board. Connects and locks on 6+ satellites within 30 - 40 seconds, even indoors!. But (why is there always a ‘but’?) on battery power, outdoors, it takes 2 minutes or more to lock and drops out regularly. The battery is a 2500mA, 5V lithium cell phone charger plugged into the FTDI USB port. Does anyone know what tricks are requires for battery operation?
Only complaint is that the chart in the data sheet listing the pin out numbers the pins opposite the standard pin numbering on the JST-SH connector. Other than that the compact size is great, easy to use no complaints.
The GPS itself is good - the module, not so much. Unusual cable adapter and they don’t include the cable! Also, in a fit of unrelated frustration I switched the polarity (I know, I know) and instantly fried the device. So obviously there is zero protection built in.
Started the prototype using an Arduino Mega along with softwareserial and tinygps++ libraries and it worked great. Eventually ported it over to the esp8266 IoT platform running Blynk and I never had a problem with it. I will say that you shouldn’t rely on GPS (any type) altitude as it was sort of in the ballpark, but changed very frequently presumably due to the acquisition (or loss) of additional satellites. I did not have any trouble receiving over 5 satellites indoors which was very convenient.
Works as advertised.
This receiver presents a great value. It’s lower cost that most others yet it works just as well as other units. It’s in a tiny format so it easily fits into small enclosures, quickly picks up satellites and maintains those signals when its moved around.
I used a jst cable and breakout board to connect it to my Arduino project. The TinyGPS library made accessing the data in a usable format a snap.
I got this one because I needed a GPS slimmer than the standard one with a 1"x1" ceramic antenna. There are 2 issues: the claim is 20-30 seconds cold start. Maybe under perfect conditions, but definitely not sitting right next to a window. And doesn’t work 5 feet from the window inside a standard house. Another GPS module (ubox) had no problem even with a cold start in the same spot. Also while working with a battery at 4 volts, stopped working when the battery discharged to 3.6 V.
Works perfectly fine with an unlicensed ISM tracker. Ditched the onboard GPS and added this unit to it by soldering the signal cable to the board and used the 3.3V power output on an earlier version of the device http://www.eggtimerrocketry.com/page45.php
But has a couple of imitations the larger ones don’t have. It takes about 30 seconds for the lock to occur after power up. Once locked, the module can be put into power-down mode and come back up very quickly. Maybe it remembers its previous position and can re-lock quicker? I could not write to the module at all. I don’t think that feature is supported. I used it as a real time clock with a PIC micro to control my landscape lighting and it worked well in that application compensating for DST, etc.
I bought this to use as a simple GPS receiver for an Arduino project. It works great for that. Just remember to buy the recommended cable. Also pay attention to the pinout diagram in the data sheet. The black wire on the JST cable is NOT pin 1, it is pin 6. That took me a while to figure out, but once I read the manual this started feeding data to the Arduino without issue. It is not the fastest GPS module I have used, taking a while to get a fix and only 1hz updates, but the signal is solid and even sitting at the window indoors, it is getting 7 sats.