sensor

I coded an app based on proximity sensor , but I would like to be able to give users the ability to change the sensitivity of the sensor. Is it possible? If yes how to do it? Just "implements SensorEventListener" and follow the code : public void onCallStateChanged(int state, String incomingNumber) { switch (state) { case TelephonyManager.CALL_STATE_IDLE: System.out.println("My Call IDLE"); CallState = false; StartAudioSpeacker(); System.out.println("Is phone speaker : "+ audioManager.isSpeakerphoneOn()); if (audioManager.isSpeakerphoneOn()) { audioManager.setSpeakerphoneOn(false);

I would like to know how to measure temperature, light and humidity with a contiki program. I'm using a TelosB mote (sky mote), so these three sensors are integrated in the mote itself. PS: I'm working on Contiki-OS 2.7 In order to use the light and temperature sensors you will need to add the next: #include "dev/sht11-sensor.h" #include "dev/light-sensor.h" Then you can use the next functions: static int get_light(void) { return 10 * light_sensor.value(LIGHT_SENSOR_PHOTOSYNTHETIC) / 7; } static int get_temp(void) { return ((sht11_sensor.value(SHT11_SENSOR_TEMP) / 10) - 396) / 10; } For

I am having some trouble to find or implement an algorithm to find a signal source. The objective of my work is to find the sound emitter position. To accomplish this I am using three vibration sensors. The technique that I am using is multilateration that is based on the time difference of arrival. The time difference of arrival between each sensor are found using Cross Correlation of the received signals. I already implemented the algorithm to find the time difference of arrival, but my problem is more on how multilateration works, it's unclear for me based on my reference, and I couldn't

I'm currently writing on a program about detecting different colored balls and sorting them with the Lego NXT and its color sensor. At the beginning it worked quite good but now, the color sensor always returnes the color ID "7" (white), no matter what i do. On the documentation page i found something about a calibration (calibrateHigh() and calibrateLow()). Does anybody know how to use this calibration or is my color sensor broken? I tried it with this code: package com.mydomain; import lejos.nxt.*; public class HelloWorld { public static void main(String[] args) throws Exception {

I'm making an app that needs to toggle the screen on/off when the user shakes the phone. So far, I've got a SensorEventListener that listens to the shakes as suggested in the answer to this question . When I detect a shake, I change the value of the screen's brightness as suggested in this question's answer . It all works great if I don't actually turn the screen off... if I set the brightness to 0.01f through the public void setBright(float value) method it works perfectly. However, if I set the brightness to 0.0f, the phone won't turn the screen again... not until I press the power button,

i have build the example Xsensor for 420cc then i plug it and put the sensor board on it, on other side for the serial board i build Xsniffer (TOSBase) to the mote that i need to put it on the 520MiP serial USB. To see the message send form mote 1 to the mote 2, i try to open cygwin terminal and type xserve -device=com4 then it open serial device but there is nothing display !! i have try to change the (TOSBase) by (XMeshBase) to see if this will be useful, but this mote with (XMeshBase) use it on serial USB, but still there is no output on xserve. note: when i try to open MoteVeiw the output

Wrote a simple program that prints out accelerometer output. mSensorManager = (SensorManager)getSystemService(SENSOR_SERVICE); mSensorManager.registerListener(this,mSensorManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER), SensorManager.SENSOR_DELAY_FASTEST); It turns out that: The accelerometer output is always set to "lowest" as determined by: public void onAccuracyChanged(Sensor sensor, int accuracy) { if (collectingData){ accelPrecision.setText("accelerometer accuracy: " + accuracy); } } The actual accelerometer readings are very inaccurate - about 2%-5% fluctuations even when it's