So I recently won a Telit Developer Evaluation kit and got it in the mail yesterday. Smiling from ear to ear I proceeded to open the box and pulled out all the contents. I came to find out the kit has no module in it! I couldn't believe it, but can't complain since it's a $400 kit. Anyway, has anyone used this kit and where's the best place to buy one module? Also, what is the adapter board and does that come with the Telit module or is it an additional component. I'm very excited about developing a GPS tracking application with the Telit module, but unfortunately have to wait another week or two until I can buy one. I'm more of a web programmer so Telit's python environment looks pretty cool.

It looks like you need some sort of adapter board as well as the module. I find it very annoying when companies don't sell their stuff online, or at least list prices.

That's why I bought my Telit module and eval kit from Spark Fun Electronics, you can buy it online and its $300 or less for an eval kit with a module. Check it out SparkFun Electronics

I agree. I can't believe I didn't even get the module! I think I may splurge for this guy on SparkFun and it looks like GPS is built-in. Thanks for the link!

I think your adapter board can be found on this page. It's confusing with all the different product codes, but I read the adapter board will plug into your Telit EVK2 kit. Best of luck!

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With all the proven Tracking devices out there why would you want to develop your own?

Just wondering?

Great question. I find myself asking the same thing and then come to the same realization over and over again. I've been evaluating some of the leading hardware platforms out there for fleet tracking (at least I'm lead to believe these are the leaders). These include Enfora, CalAmp, and Iridium. I'm sure there are others, but let me state my point. In the Enfora and CalAmp case I've looked at the docs and both companies use some proprietary protocol over UDP. Being a web guy that scares the hell out of me and I have no clue how to even with these devices.

What is appealing about the Telit is that it's python (a scripting language I'm somewhat familiar with) and I could write my own SIMPLE communication protocol over HTTP. Actually, calling it a protocol is an over-statement. I would probably do something that is REST based with simple name/value pairs. Am I crazy in thinking this is a simpler approach? What are your thoughts?

It really depends on you application and how cost sensitive you are on airtime. HTTP works over TCP, which incurs an overhead which is a sizable fraction of a Kbyte. Most wireless carriers will round-up to the nearest K on each session, and most will allow a session to stay open for at least 24 hours. So if you are only going to report a location once a day or so, it probably makes no difference. However, if you are going to be reporting hundreds of locations per day, the overhead of TCP will dominate your airtime usage.

However, if your application can afford an unlimited plan, then that is a moot point and HTTP would be great.

UDP do tend to be more difficult, but there is no reason why the need to be proprietary. Some open standards here would be great. I haven't worked with it much, but I do know of one that is targeted at tracking applications. it is called OpenDMTP, check out their site here: OpenDMTP - The Open Device Monitoring and Tracking Protocol/Program

If anyone has experience with this protocol, I would love to hear about it.

If you are a web services guy then why don't you partner with someone who already has certified devices reporting to a database. You can then access the data you require using the partner as a service bureau. If you find the right partner, what you end up with is ease of development and better pricing from you aggregated volume and they pick up an OEM partner...

Not trying to tell you how to do business but I know the road you are thinking about traveling and there are many issues when navigating this path.

Sometimes our competitors are really our best allies... I have see this work in the past.

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