Dangerous Prototypes. Packet radio and the Arduino Radio Shield Packet radio is a means of sending data wirelessly over radio channels, and is often used by Amateur Radio Operators.
(One form is APRS, described in our earlier post.) In the video following the break you get some idea of … Read more Arduino-Processing-RFID sandwich game Here’s a description by joshuajnoble of thefactoryfactory of his efforts in developing a simple “sandwich” game using Arduino, Processing and a Parallax RFID reader. Arduino + Jeep = JEEPuter Ed Zarick has released details on his Arduino vehicular control system known as JEEPuter.
Arduino and GSM cellular tutorial Tronixstuff has produced the first part of their tutorial series on using a GSM cellular modem with the Arduino. Amani CPLD Arduino shield From the comments on our earlier CPLD post: Programmable logic meets the Arduino. Arduino talking to an I2C LCD display StrangeParty demos how to use the Matrix Orbital 20×4 display with Arduino via I2C using the Wire library. Guides:sdr_tracker [UKHAS Wiki] This is incomplete.
Needs antenna advice Linux Overview With recent advances in software defined radio (SDR) it is in theory possible to track and listen into a payload using a sub £20 dongle and your PC. This is cutting edge and although suitable for testing and tracking the payloads of others it isn't recommended for actual tracking and recovery of your own payload. DVB-T dongles based on the Realtek RTL2832U can be used as a cheap SDR, since the chip allows transferring the raw I/Q samples to the host, which is officially used for DAB/DAB+/FM demodulation. The RTL2832U outputs 8-bit I/Q-samples, and the highest theoretically possible sample-rate is 3.2 MS/s, however, the highest sample-rate without lost samples that has been tested so far is 2.8 MS/s.
WARNING : It is unlikely you will be able to use these devices for tracking a real flight unless you have a very good antenna. Note on Antennas Compatible Devices The thing to look for is the tuner the SDR uses : Warning. Mac Software Hints. A radio that's out of this world! Guides:tracking_guide [UKHAS Wiki]
This is a short guide to receiving live tracking data from a balloon sending out GPS fixes.
Covering setting up a radio, computer and the software to upload the tracking data to a central server. Another excellent guide can be found at Project Horus Translations Components Radio Receiver - needs to be able to receive between 430MHz and 440MHz (also known as the 70cm band (as the wavelength is 70cms long)) and also be able to receive SSB (single side band), it is important to note that this isn't FM, many radios only receive FM so look for SSB (which may be described as USB and LSB).
Background How does this all work? This is using the computer to do a lot of the heavy lifting, rather than the traditional way which might be an integrated radio and modem, which is a lot less flexible (and more expensive!). SSB (single sideband) radio was initially developed as a low power way to send voice. There is a 30-sec recording of live data mp3 version and wav version. Radio Computer dl-fldigi RxID or RSID. NTX2-434.650-10 - RADIOMETRIX - RF MODULE, TX, FM, 434.65MHZ,
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