My thanks to cycjec for tipping me to this open source for guerrilla gadgets. Let your imagination wander.
Arduino based UAVs - Open source "unmanned aerial vehicles"
ArduiPilot - Navigation for UAVs
ArduPilot is an inexpensive navigation-only autopilot based on the open-source Arduino platform. It is currently in beta. In fall 2008, it will be available as an easy-to-assemble kit (PCB with SMD parts already soldered, plus a few through-hold parts to solder yourself as required).
BlimpDuino - Open source blimp UAV
BlimpDuino is a very low cost open source autonomous blimp. It consists of an Arduino-based blimp controller board with on-board infrared and ultrasonic sensors and an interface for an optional RC mode, a simple gondola with two vectoring (tilting) differential thrusters, and ground-based infrared beacon. It will be available as a commercial kit, complete with a mylar envelope.
17 grams, with ultrasonic and IR sensors.
Controls two motors and one vectoring servo.
Built-in RC compatibility (can read two RC channels--throttle and steering)
Designed for a 7.4v LiPo battery; has an automatic power cut-off at low voltage to protect the battery
Price: Approx: $100
Paparazzi - Open autopilot system
Paparazzi is a free and open-source hardware and software project intended to create an exceptionally powerful and versatile autopilot system by allowing and encouraging input from the community. The project includes not only the airborne hardware and software, from voltage regulators and GPS receivers to Kalman filtering code, but also a powerful and ever-expanding array of ground hardware and software including modems, antennas, and a highly evolved user-friendly ground control software interface. All hardware and software is open-source and freely available to anyone under the GNU licencing agreement.
Price: $ various - also check out PPZUAV.
Open GPS tracker - Open tracking!
The Open GPS Tracker is a small device which plugs into a $20 prepaid mobile phone to make a GPS tracker. The Tracker responds to text message commands, detects motion, and sends you its exact position, ready for Google Maps or your mapping software. The Tracker firmware is open source and user-customizable.
Open source hardware for "Spy Tech" and trouble makers
WaveBubble - Open source cell phone, Wi-Fi jammer
A self-tuning, wide-bandwidth portable RF jammer. The device is lightweight and small for easy camouflaging: it is the size of a pack of cigarettes. An internal lithium-ion battery provides up to 2 hours of jamming (two bands, such as cell) or 4 hours (single band, such as cordless phone, GPS, WiFi, bluetooth, etc). The battery is rechargeable via a mini-USB connector or 4mm DC jack (a common size).
Alternately, 3 AAA batteries may also be used. Output power is .1W (high bands) and .3W (low bands). Effective range is approximately 20' radius with well-tuned antennas. Less so with the internal antennas or poorly matched antennas. Self-tuning is provided via dual PLL, therefore, no spectrum analyzer is necessary to build this jammer and a single Wave Bubble can jam many different frequency bands - unlike any other design currently available! To reconfigure the RF bands, simply plug it into the USB port of your PC and type in the new frequencies when prompted. Multiple frequency ranges can be programmed in, each time the device is power cycled it will advance to the next program in memory.
Price: Not for sale directly, parts / everything... about $200
SIM Card reader kit - Hack your cell phone's SIM card, really delete messages!
This is a SIM card reader/writer for experimentation and investigation of SIM & Smart cards. Once the kit is built, accompanying software can be used to read and write from the card. Together they can be used to backup stored SIM card data, recover deleted SMS's and phone contacts, examine the last 10 phone numbers dialed, etc. (Despite being called a SIM reader, it can also write to SIM cards) The kit includes PCB and components. Basic hand tools, 9V battery, SIM card and serial cable are not included. This project is fairly easy and can be built within an hour, even if you've never soldered before!
TV-B-Gone - Turn any TV off!
Tired of all those LCD TVs everywhere? Want a break from advertisements while you're trying to eat? Want to zap screens from across the street? The TV-B-Gone kit is what you need! Hack it! This ultra-high-power, open source kit version of the popular TV-B-Gone is fun to make and even more fun to use. A very simple kit and great for people who have never soldered anything before.