Picture 1. You can clearly see that there is a nice bit of solder paste on all of our pads. Using a nice set of tweezers (www.zeph.com) I place all of the components by hand.

Picture 2. Here I have placed the uPic and you can see how nicely things are lined up. This is where a good set of dental needle tools come in handy (www.zeph.com). It looks like the solder paste might bridge between the ic legs. However, there is just the right amound of solder paste that when we heat the board up these bridges should not appear. If they do a quick application of heat from a soldering iron and copper solderwick will fix this.

Picture 3. Step and repeat until you place all of your components.
does this have a screen extention ???
james no screen on this device. Total passive logger.
ok pitty lol it should have 1 so u can use it as a gps.
<pre>$175!!! i bet the components only cost $50, mostly for the battery and the GPS module. do you think you could post a picture of the schematics. or something.and also, when you connect it to your computer, does it send coordinates, and speed and direction, or do you have to work them out yourself.i have to say, i agree with the people who say that this is geared to advertsing</pre>
Cheaper one's here ..<br/><a rel="nofollow" href="http://www.sparkfun.com/commerce/categories.php?cPath=4_86">http://www.sparkfun.com/commerce/categories.php?cPath=4_86</a><br/>
To bad the logger only logs for 8 hours. They are using a lot of power for their device. Not sure why. My design only requires ~58 mA and can run for ~48 hours continuously. We also implement a sleep mode that draws <1mA. Oh, and the product isn't available yet nor does it come with an SD Card.
Hello, yes indeed your's looks to be a better option, I was mearly pointing out that there are other options.
Hey all thanks for the input. I tried to make a few changes to help introduce everything. To help answer your questions John: 1. Price is $175 2. We considered an LCD but wanted to keep power draw as low as possible for maximum runtime. For instance, a # of customers use them for animal tracking over several months. 3. I prefer www.mouser.com for most of my parts...They have a great "projects" page that keeps track of all your parts for a particular project that is really helpful. 4. With the datasheet I include a schematic. Otherwise, I have released some previous source code, but like to keep that part for me. However, I do modify the firmware for customers, usually at no cost for their particular projects.
How much would one of these cost? Would it be easy to add a read out lcd so one could know where you were in real time without attaching a PC? What's your favored source for components? Are your designs open for user modification? I agree with dchall8, it would be great to have that little explanation up front in your instructable, so people have their curiosity peaked before they wade in to technical surface mount details. Other than that, nice photos and pretty clear instructions. Good job.
I'm starting to sound like a broken record. Please explain what you're talking about. Start by spelling out SD GPS. I think I know what GPS is, but maybe not. What does this do? Why or when or where would I want one? Why would I want to log it and what's smd?
Secure Digital (SD) is a flash (non-volatile) memory card format developed portable devices, including digital cameras, handheld computers, PDAs and GPS units.<br/><br/>The Global Positioning System (GPS) is a fully functional Global Navigation Satellite System. Satellites transmit signals that enables a GPS receiver to determine its location, speed and direction.<br/><br/>Surface mount technology (SMT) is a method for constructing electronic circuits in which the components are mounted directly onto the surface of printed circuit boards (PCBs). Electronic devices so made are called surface-mount devices or SMDs.<br/>(definitions were from <a rel="nofollow" href="http://en.wikipedia.org/)">http://en.wikipedia.org/)</a><br/><br/>This device would gather GPS data and store it on the SD card so it could later be uploaded to a computer to determine where it (and also who/what its attached to) has been. There are many different uses for such a device, parents (or employers or the FBI) often use them to track where (and how fast) there child (or employee or suspect) has taken their car. Some people also just like to know where they have explored or how fast they biked or how far they ran.<br/>
That's not what I thought at all. Now I want one.

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