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greenitguy

Group Buy request- GPS module for $15-20

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Hello friends,

 

I ran across this Mediatek MTK3339 based GPS module on Aliexpress- this is one vendor among many selling for around the same price band (<$15 for individual module)

http://www.aliexpress.com/product-gs/53 ... alers.html

 

Vcc= 3.0V to 4.3V (3.3v typical) Vripple must be less than 50mV

Optional Vbackup for internal RTC & fast fix= 2.0V~4.3V, Typical 3.0V

Current Consumption= 25mA acquisition, 20mA tracking

Update Rate= 1Hz (default), maximum 10Hz

DGPS= SBAS(default) [QZSS,WAAS, EGNOS, MSAS,GAGAN]

Time to Fix= Hot start: 1 second typical, Warm start: 33 seconds typical, Cold start: 35 seconds typical

 

Product details (datasheet, software,etc):

http://www.gtop-tech.com/jsf/moduleprod ... 2b6b346643

 

Just want to see if others are interested and willing to do a group order.

 

MTK3339 is reputed to be the best GPS chip for its price currently available. It is also very low power as far as GPS modules go. They can probably remove the 60K feet height limit on request for a large order- this will make ballooning projects for the MSP430 feasible :)

 

I would like to buy a few of these but I do not have the time available to setup a group order. I think ~$20 including US domestic shipping is possible.

 

The CC2500 group order worked out very well and it would be great to get good GPS modules as well.

 

Please let me if this is feasible - advice / suggestions from senior members like Bluehash are welcome !

 

Thanks and looking forward to your reply.

 

EDIT1: fixed link to the correct MTK3339 based module and added link to design house's website for product details

EDIT2: added summary specifications from datasheet

EDIT3: added current interest

----

Current interest:

  • RobG: 2
    dkedr: 4
    caa028: 3
    GreenITguy: 3

Total: 12

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dkedr,

 

might have overlooked it completely, but i cant find what voltage these modules run on. 3v? 5v?

 

Found datasheet here: http://api.ning.com/files/FOHnxAzm7tC4g ... asheet.pdf

 

3.2-5V main and 2-4.3V battery backup

 

That is a different module.

 

I have updated the post with the corrected link, summary specifications and datasheet link.

 

Feel free to suggest a better value GPS module.

 

Thanks !

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dkedr,

 

might have overlooked it completely, but i cant find what voltage these modules run on. 3v? 5v?

 

Found datasheet here: http://api.ning.com/files/FOHnxAzm7tC4g ... asheet.pdf

 

3.2-5V main and 2-4.3V battery backup

 

That is a different module.

 

I have updated the post with the corrected link, summary specifications and datasheet link.

 

Feel free to suggest a better value GPS module.

 

Thanks !

 

 

My bad. It looked very similar.

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No problem- your post made me realize that I should have linked to the datasheet and added details. :lol:

 

Thanks !!

 

dkedr,

 

 

That is a different module.

 

I have updated the post with the corrected link, summary specifications and datasheet link.

 

Feel free to suggest a better value GPS module.

 

Thanks !

 

 

My bad. It looked very similar.

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I am in, probably 2 pcs.

We should also try HopeRF, they have few modules that are <$10 I think.

Do you have the HopeRF GPS details and a source? It may be worthwhile to check them out

I vaguely remember reading sometime ago that HopeRF GPS have some bugs/ issues. A quick google search shows that the HopeRF module needs an external antenna.

 

I picked the MTK chipset one only because DIYDrones tested a bunch of different GPS modules and recommends it.

Sparkfun sells a GPS based on the older MTK3329 for $60 :roll:

http://www.sparkfun.com/products/8975

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I didn't do any research on them, I wanted to get few with another deal.

 

http://www.hoperf.com/rf_fsk/app/GPS.htm

 

Here are the GPS prices:

part no./quantity below 50pcs

GPS01 US$8.00

GPS02 US$9.00

GPS03 US$9.00

GPS04 US$9.00

What killed the deal for me was the $30 DHL shipping, but with the group buy...

 

If I understand the datasheet correctly these don't have an antenna.

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I've been looking into cheap GPS modules, here's what I've found:

 

I found these on mouser: http://www.mouser.com/ProductDetail/Mae ... 52bnFHEn8X

 

I bought a cheap bluetooth module here http://www.ebay.com/itm/New-TomTom-MKII ... 2826026906

 

Taken apart: http://i.imgur.com/vHQPq.jpg

 

Found out you could hold CTL low and read the serial output where its fed into the bluetooth module, the only problem is I tried to take the bluetooth module off and well, it didn't work after that, but its a cheap way to get GPS and a case with battery and charger, if only I could get that bluetooth module off and replace it with a MSP430 board in its place and still have the GPS module work. I guess you can re-program the bluetooth modules firmware to do other things but I didnt try it, from factory the bluetooth module acts as a wireless serial port.

 

Anyways, I'd be in for 1 if we can get them for under 15 & they include antenna.

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