[Nick] caught [Alex]s GPS enabled AVR, so he sent in his project using the same Telit GM862 module. Rather than depend on an external AVR, he wanted to use the on-board python interpreter. Apparently, documentation is a bit sparse, so he put together a good write-up on developing python for the device. Since the GPS unit takes up the com port previously used for debugging info, he added a hardware python debugging board to speed development.
gps hacks196 Articles
SMS Tracking With A GPS GSM Enabled AVR
[Alex] sent in some of his latest work. He interfaced some not so cheap components to give an AVR GPS and GSM I/O. For now it can read the GPS position and send text messages. Thanks to the GPS/GSM module, the schematic is pretty simple – anyone with basic soldering skills and a desire to put a dent in their credit card can probably build this. (Programming the AVR is probably the most difficult task)
Solar GPS Logger
We don’t normally chase after commercial products, but when I ran across this guys work, I was impressed. My favorite has to be this solar powered GPS logger. It logs your trek to a SD card and it’s oh so tiny. Other notable projects include a li-poly battery backpack for charging USB devices. (Li-Poly batteries require some specialized charging)
Wave Bubble Portable RF Jammer
Hack-A-Day friend [Limor] AKA [ladyada] has been promising a portable RF jammer for a while. guess what she sent me for Christmas? The Wave-bubble is a self tuning RF jammer – good for around 20 feet of RF enforced peace. (It outputs .1-.3 watts) With a pair of less efficient antennas, it even fits inside a pack of cigarettes. She’ll never sell these because the FCC would come-a-knockin, but if you’ve got some major skills, you might be able to build one. (I’m going to believe her take on this, I’ve seen her work in person and it’s some damn fine stuff)
Merry Christmas! Get your Design Challenge entries in today!
Nikon D200 Gps Adapter
Kevin Zeits sent in his diy Nikon d200 gps cable and hot shoe gps mount.
Nikon sells it for $150, but has a 3 to 6 month eta. Ok, it’s really just a ttl to rs-232 converter with proprietary connectors – but I love tagging photos with gps info. Now if only I could do this for my canon rebel xt. (It would take a firmware hack at the minimum) If you’re not blessed with a d200, check out gpsphotolinker.
Using Radiosondes As Cheap GPS Trackers
A Radiosonde is an inexpensive sensor package that’s intended to be used with a weather balloon for atmospheric measurements. The device transmits data in the 403 MHz band after being launched and they usually aren’t recovered after use. You can pick them up for very little money on eBay so [Nick] thought they might work well as a low cost GPS tracker. Unfortunately the Radiosonde doesn’t transmit standard NMEA GPS data, but GPS doppler measurements. It’s hard to determine what those are actually useful for. Nick did find one other paper documenting an unsuccessful attempt which he has posted to his site. So now Nick is looking for some help either making the data more useful or coming up with a functional device that’s just as inexpensive. Anyone got any leads?
Magellan EXplorist Upgrade
This Russian site has all the details needed to upload new maps to a Magellan eXplorist 300, 200, or 100. Inside the battery case are four pads that can be used for serial communication. You will have to use a MAX232 to shift the voltage levels. Since this occupies the battery space you’ll need to provide power as well. This can be tapped from a USB port. Once the cable is built you can download waypoints using OziExplorer.
[thanks Chris, Cary for corretion]
