This simple ATtiny45 based wireless security system includes a ZigBee wireless door sensor and a PC interface. When a door opens or closes, the ATtiny45 sends a message to the PC interface.
Wireless Security System: [Via] - [Download Project] - [View Project PDF]
For those of you who dont know why you need to add an external antenna to a router, its because the WRTSL54GS doesn’t have an external antenna like most wifi routers have. The job is quite simple, all you need is an antenna and its plug preferable with a pigtail attached to it. You just need to solder the pigtail by following the instructions.
Adding external Antenna to your WRTSL54GS: [Link]
This is the latest wireless accelerometer from SparkFun. The WiTilt v3 incorporates many new features including LiPo battery, built-in charger, enclosure, single axis gyroscope and many more! When combining the triple axis accelerometer sensor from Freescale MMA7260Q with the Bluetooth module from Roving Networks what do you get? The new, WiTilt v3 complete wireless Accelerometer Measurement System. All measurements are transmitted via a wireless Class 1 Bluetooth link that is extremely easy to use with a range of 100m (330ft) line-of-sight and 30m (100ft) in doors.
WiTilt - wireless accelerometer: [Link]
This project is for a small electronic unit that allows the user to sense the presence and relative signal strength of wireless hotspots. It can be worn as a pendant or carried in a pocket. It is “always on” and communicates the presence and signal strength of an in-range hotspot by way of sequences of pulses - like a heartbeat you can feel. The stronger and faster the “heartbeat”, the stronger the wireless signal detected.
It does not actually authenticate or otherwise interact with a hotspot in any way. It is a 100% passive device, meaning it transmits nothing. It can detect hotspots, but cannot be detected itself.
If your a fireworks/rocket geek, you are familiar with this launch controllers. You can use either a cheap commercial version (the single button launch controller) or you could build this fancy controller. The project also features some diy igniter’s, pretty much all you need to setup your show.
