Sensor

In the past days I published a couple of arduino libraries. All coming from by XBee sensor development. I’m still waiting for the MAX756 to arrive from Futurlec, I need the MAX756 to power the xbee sensor with batteries and mount it in its final position. So in the meanwhile I’m cleaning a little bit the code, moving thing to libraries, etc. Now it’s the turn of the MMA7260Q, (see other posts about MMA7260q) . I created an Arduino library to use MMA7260Q as a Tilt Sensor that does autozero calibration. ...

I talked about the DS1620 in a previous post. Now I created a DS1620 library for Arduino that has a more object oriented interface. The library has to be unpacked in the $arduino_home/hardware/libraries directory. After unzipping the library you should end up with a $ARDUINO_HOME/hardware/libraries/ds1620 directory. The library contains an example that can be accessed through the File ⇒ Sketchbook ⇒ Examples ⇒ Library-ds1620 ⇒ ds1620. ...

I’ve playing with the MMA7260Q accelerometer. Following the indications in Measuring Tilt with Low-g accelerometers. Implementing Auto-zero calibration technique for accelerometers. AN3461 Tilt Sensing Using Linear Accelerometers. I connected X,Y and Z of the MMA7260Q breakout to A0, A1 and A2 of the Arduino. Then, GS1 and GS2 connected to ground to set the range to 1.5g. Ah, and of course, I connected ^SLEEP to VCC. I managed to put together this piece of code that ouputs the tilt angles ρ(rho) , φ(phi); and Θ(theta) in degrees. I does automatic autozero calibration so before getting sensible results you should tilt the sensor around +/-90 degrees in every axis. ...

I received a couple of Arduinos Diecimilla that I bought from Libelium. My first project with Arduino has been interfacing with DS1620 digital temperature sensor. It was really easy it just a matter of connecting pin 3, 4 and 5 on the Arduino to RST, CLK and DQ on the DS1620. The source code in this post will read the temperature from the DS1620 using the 3 wire interface and it will output the result to the serial interface in the Arduino. ...

I’ve been trying to find power meters for home. My criteria is that it has to support several sensors (because I want to know how much energy my computer and home cinema is spending) and it has to be wireless (because it more convinient this way). After researching a couple of hours, it doesn’t lok good. The number of choices is very small. The Voltcraft option is in doubt because all the information I can find is in german. And the only other working option that I found is Plogg. ...