sensorapp

I just got a job offer of a Melbourne company, I will leave for Hong Kong from 29 Nov 2010 till Feb 2011. Going there for new job training and helping them develop ZigBee product. I will try my best to keep this blog alive. but no gurantee… See you Melbourne, I will miss you.

Dust Sensing Project

Nov 27

PaulArduino, Projects, Sensor, SunSPOT, WSN analog, Arduino, dust, pwm, serial, spaughts 1 Comment

Its currently funnded by University of Melboure, soon devices will be delivered to defence sector to test it out. I am in hurry, so just post some pics here. It will be well documented and open source once I finish writting, please visit http://dust.sensorapp.net later.

BTW, thank you Coles, the toothbrush case is Perfect

Interface Arduino and Sun SPOT

Nov 18

PaulArduino, Sensor, SunSPOT dust, serial port 3 Comments

The Arduino has some functions that Sun SPOT does not have, and Sun SPOT got some functions that Arduino may not have. So we can connect them to make them work together. Take the Sharp dust sensor as an example, Sun SPOT can not generate proper pulse signal to drvie this sensor (maybe it is because KVM is too heavy), but Arduino can.

Both of them have serial communication, so this is our solution. It is pretty easy to connect:

Sun SPOT

Arduino PRO Mini

D0 Rx
–>
Tx

D1 Tx

–>

Rx

+5 (Optional)

–>

Vcc

GND (Optional[......]

Sharp Dust Sensor and Arduino

Nov 13

PaulArduino, Sensor air quality, analog, Arduino, dust, pwm, sharp 28 Comments

Sharp’s GP2Y1010AU0F is an optical air quality sensor, designed to sense dust particles. An infrared emitting diode and a phototransistor are diagonally arranged into this device, to allow it to detect the reflected light of dust in air. It is especially effective in detecting very fine particles like cigarette smoke, and is commonly used in air purifier systems.

The sensor has a very low current consumption (20mA max, 11mA typical), and can be powered with up to 7VDC. The output of the sensor is an analog voltage proportional to the measured dust density, with a sensitivity of 0.5V/0.1mg[......]