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Sun SPOTS

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Sun SPOT (Sun Small Programmable Object Technology) is a wireless sensor network (WSN) mote developed by Sun Microsystems. The device is built upon the IEEE 802.15.4 standard. Unlike other available mote systems, the Sun SPOT is built on the Java 2 Micro Edition Virtual Machine (JVM), without any Operating Systems.

Hareware

Processing

  • 180 MHz 32 bit ARM920T core - 512K RAM - 4M Flash
  • 2.4 GHz IEEE 802.15.4 radio with integrated antenna
  • USB interface

Sensing

  • 2G/6G 3-axis accelerometer
  • Temperature sensor
  • Light sensor
  • 8 tri-color LEDs
  • 6 analog inputs
  • 2 momentary switches
  • 5 general purpose I/O pins and 4 high current output pins

Battery

  • 3.6V rechargeable 750 mAh lithium-ion battery
  • 30 uA deep sleep mode
  • Automatic battery management provided by the software

Networking

  • IEEE 802.15.4

Applications

There are some cool applications on this Blog. Possible ways that we can utilize it:

  • Use the built-in temperature sensor.
  • Attach to sensors (e.g. RTTrax or WMS wind sensors) as the communication componenent.
    • SPOTS has several analog input pin, which could be used to take readings from the WMS wind sensor. Problems is WMS also draw 12V powers from the output wires, but SPOT does not supply power on these input pins.
    • In order to connect to RFTrax, we can use the buit-in Universal asynchronous receiver/transmitter (UART). But this requires some hackings on the firmware.


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