Archive
Arduino: Vehicle Parking Helper with Ultrasonic Sensor and LCD display.
This project refers to an Arduino sketch which uses an ultrasonic sensor for calculating the time return of the ultrasonic signal emitted by the sensor and the object reflecting the signal back. Then, with the help of appropriate physicomathematical formulas, it performs calculation of the distance between the sensor and the object causing the reflection signal. The distance is displayed in an appropriate LCD display both in inches and in centimeters. This system could be used in security doors, on cars as a helper to park or anywhere else where distance at close proximity is important.
Arduino: Monitor sensors with an LCD display and a Keypad.
This project refers to an Arduino sketch which uses an LCD display (as output device) with in-built elementary Keypad (as input device) to display information from sensors. In this project, there are temperature, light and motion sensors. If we want to check the value of one of the sensors, we can do it via the keypad onto the LCD screen. We can choose the sensor of interest using the keys UP and DOWN.
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FSF News
- World Wide Web Consortium takes next step with controversial DRM proposal, Defective by Design condemns decision
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- The FSF is hiring: Seeking a full-time outreach and communication coordinator
- International coalition of Internet freedom organizations urges W3C to reject Encrypted Media Extensions, a proposal to build Digital Restrictions Management into the Web
- 2012 Free Software Award winners announced
