Arduino based Proximity Sensor and Detection

Arduino based Proximity Sensor and Detection Develop a proximity sensor based in Arduino with: 1. 3 sonars (EZ1 type); 2. 3 IR digital sensors (50, 30 and 20 centimeters); 3. 4 contact sensor (on/off - push bottom); 4. Communication with Microsoft Windows and integration with .NET; 5. API for .NET and other languages (C/C++). System must: 1. Run in Arduino Uno, Duo, Nano and Mega; 2. Easy remove sensors when necessary - software must reflect this; 3. Complete documentation in English - manual and software documentation; 4. Complete description of IR and push bottom with sale codes and manuals; 5. If an IR sensor will be developed, PCB documentation need to be included. Complete description of system will be described up request.