This hardware, which was built as a Computer Engineering project by [Bryon] and his classmates, gives you feedback and control of a car though a cellular phone network. It uses text messages to communicate with a control device. This can be pretty much any cellphone, but in the clip after the break they show off an Android app which puts a pretty GUI in front of you and abstracts away the tedium of specially formatted messages.
At the heart of the system is an Arduino Mega board. It has a cellular shield with an external antennae for connectivity. A GPS device, relay board, and ODB-II module provide feedback and control to the system. The relays allow the car to be started and the doors to be locked. The GPS and ODB-II module can send back location and vehicle information (anything available from the car’s sensors). There were some issues with the text messages being blocked during testing. The team thinks that the automated back-and-forth triggered some kind of spam filter from the telecom.
There’s still more work to be done if they want to actually drive the car via remote control.
Continue reading “Cellular vehicle information and control”
Now you can experience the excitement felt for centuries by ice fisherman thanks to this cellular-capable tip-up.
For the uninitiated a little ice fishing primer may be in order. The majority of what you see above is a standard tip-up rig for ice fishing. Basically it lets you set many baited lines and just watch for a flag to pop up when one of them hooks a fish. Just drill a hole in the ice and drop the line through — the orange frame rests on the surface of the ice.
The add-on here is the grey box which is hiding an Xbee device. A magnet and reed switch (which can be found at the local hardware store) complete a circuit when the flag is down. But if the flag pops up the reed switch opens (or closes, we’re not sure which) and the Xbee sends an alert to a base station, which then converts that to a text message to push to your phone. As you guessed, there’s a video after the break.
Fun and convoluted. But not entirely useless. We’d suggest swapping the Xbee/cellular hardware for a cheap microcontroller/Bluetooth setup. This way you can knock back a few cold ones in the ice house while waiting for the wireless network to alert you via an SL4A script.
Continue reading “The excitement of ice fishing now from anywhere in the world”