Hand movement based fan speed controlling system

The aim of this project is to control fan speed through hand movement by using MEMS accelerometer sensor (Micro Electro-Mechanical Systems) technology. MEMS accelerometer sensor is a Micro Electro Mechanical Sensor which is a highly sensitive sensor and capable of detecting the tilt. This sensor finds the tilt and makes use of the accelerometer to change the speed of the fan using PWM (Pulse Width Modulation). Automation is the most frequently spelled term in the field of electronics. The hunger for automation brought many revolutions in the existing technologies. One among the technologies, which had greater developments, is the MEMS accelerometer sensor. These had greater importance than any other technologies due its user-friendly nature. MEMS accelerometer sensor based devices can be easily reachable to the common man due to its simpler operation, and at the same time it challenges the designers of the device. This project makes use of a micro controller, which is programmed, with the help of embedded C instructions. The MEMS accelerometer sensor based sensor detects the tilt and provides the information to the microcontroller (on board computer) and the controller judges whether the instruction is to decrease or increase the speed of the fan. The controller is interfaced with fan whose speed is either increased/decreased using hand movement. Also, the devices are operated wirelessly through MEMS accelerometer sensor. To perform the task, the controller is loaded with intelligent program written using Embedded ‘C’ language.