I wish to build a mini GSM/GPS tracker and data logger. I am very keen to make this as small as possible. I would e grateful if someone could recommend all the products I should use to create a mini device.
Mike
If you mean “mini” as a size of cigarette pack here there are few links with all description, schematics and list of parts and where you could buy those parts:
http://www.navigadget.com/index.php/200 … ing-device
http://tinkerlog.com/2009/05/15/interfa … lit-gm862/
http://hackedgadgets.com/2007/08/19/diy … e-tracker/
Good luck 
MSH:
I am very keen to make this as small as possible.
Roll your own using a GSM chipset, a GPS chipset and a small, fast processor. Can’t get any smaller than that!
If I buy a siRFstarIV chipset for example, where could I get a small processor and what other hardware will be needed to make a working device.
siRF quotes that their starIV chip only requires 1.8 v…is that just to run the chip or entire receiver module? Could I use just a 3.3v button cell battery?
I am very new to GPS technology, but would love to build my first working receiver! This could be a fun hobby.
Thanks,
Trey
The SiRFstarIV chipset will operate off a 1.8V supply. The “receiver” will consist of the SiRFstatIV plus your processor and any other peripherals your application requires - depending on the parts you use, it may require a higher voltage.
You need a host processor that has 5-to-6 MIPS of spare processing power. There are many processors that may meet that requirement depending on what else you want your processor to do.
It’s unlikely you could design a GPS receiver module that would operate off of a button cell