Sajee tronics

Are you keep checking you crush Facebook "last active" time stamp on your phone ?? to hang on ?? Want to make a casual hang on when is he/she online ?  I have an interesting solution for you...... This device will get you notify (Alarm) when a configured user become online in FB by checking last active status time stamp.  Server side integration (PHP + Facebook API) The Facebook connect enable you to login a user into your website using his Facebook account, and the ability to request and display his Facebook information into your application or website. Once a user has granted your application the permission to interact with his Facebook account, you can: - Store the Facebook token into your database to authenticate the user in the future - Enable the user to update his Facebook status from your application - Display to the user's Facebook friends  - Display to the user's pages or application - etc... The possib...

How does it work? The Hall Effect sensor works on the principle of Hall Effect. According to which, whenever a magnetic field is applied in a direction perpendicular to the flow of electric current in a conductor, a potential difference is induced. This voltage can thus be used to detect whether the sensor is in the proximity of a magnet or not. The arduino can detect this voltage change through its interrupt pin and determine whether the magnet is near the sensor or not. The basic working of the Arduino hall effect sensor can be described as shown: Hall effect sensors have three pins: VCC(5V), GND and Vout(Signal). The pin out of a hall effect sensor is as shown above. Step 1: Connections for the Arduino Hall Effect Sensor Interfacing the hall effect sensor with Arduino is really simple. The VCC of the sensor is connected to Arduino’s 5V power pin. The GND of the sensor is connected to the GND pin of Arduino. And the Vout or Signal pin of the hall effect sensor is...

Wire colors in your car might be different than colors described here. Use the given colors for reference purposes only. Always test wires to make sure they are correct. We are not responsible for any misprints. To check hot, ignition, lights, dimmer, use a test light or voltmeter. To check speakers use test radio. To check speaker polarity (assuming you don’t have a polarity tester): Touch (for a very short period of time) one wire to the positive side of a 1.5-volt battery (any size), and the other wire to the negative side. If speaker “pops out”, then polarity is correct. If speaker “pops in” then polarity is reversed. Make sure that the wires you are going to check for speakers do not have any power. BMW P o w e r Memory (+12v Constant) Gray/Red Ignition (+12v Switched) Violet Ground (-) Brown Illumination White/Blue Dimmer (none) Power Antenna White S p e a k e r s Right Front (+) Gray/White Right Front (-) Gray/Brown Left Front (+) Gray/Red Left Front (-) Gra...