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Chipcon Radio CC1000 and DOT3 Motes

Chipcon Radio CC1000 and DOT3 Motes. 2002-11-13 Jaein Jeong. Overview. Motivation To build a mote with better radio communication capability Chipcon Radio CC1000 Low Power Consumption 7.4/9.6 mA for receive mode 5.3/8.6 mA (-20dBm) for transmit mode 14.8/25.4 mA (5dBm)

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Chipcon Radio CC1000 and DOT3 Motes

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  1. Chipcon Radio CC1000 andDOT3 Motes 2002-11-13 Jaein Jeong

  2. Overview • Motivation • To build a mote with better radio communication capability • Chipcon Radio CC1000 • Low Power Consumption • 7.4/9.6 mA for receive mode • 5.3/8.6 mA (-20dBm) for transmit mode14.8/25.4 mA (5dBm) • Reduced interference thanks to FM modulation • DOT3 motes • Basically essential parts of MICA with new radio • ATMega 128 processor and 6 ADC channels • CC1000 Radio ATMega 128 processor DOT3 mote Front side CC1000 Radio chip Back side

  3. Chipcon CC1000 • Supports different bands of frequency • 315, 433, 868 and 915 MHz bands are supported • Can choose only one range – because RF circuit depends on the frequency range • We tested for 433MHz and 915MHz • Allows to select a frequency within a range • Within a range (e.g. 915MHz), we can choose a specific frequency out of 40 frequencies • Good for reducing any interferences from other devices • Supports two tones. One for transmit, the other for receive.

  4. Status • It works! • The range was around 100ft indoors • 373 Cory to the elevator Coverage Sender

  5. Status • Difficulty • Initial production targeted for 433MHz had a wrong inductor (which is for 915MHz). • After replacing the inductor, it worked. Inductor L8 was in wrong value (should be 33nh, but in 4.7nh)

  6. Demo • Demo 1 • Two 900MHz DOT3 motes • One mote sends a message and the other blinks upon receiving the message • Demo 2 • One 433MHz DOT3 and one 433MHz MICA2 • Sends a command and receive reply through MICA2 which works as a base station. DOT3 operates receives command and gather ADC sensing data.

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