Design, implement and characterise a smart$-$phone based instrument to measure static torque. Background and more details: $$ Smart phones are packed with sensors that make it possible to measure a number of other variables that don$$t necessarily have anything to do with the original purpose of a phone. $$ Your task is to make use of the onboard sensors available on your smart phone to design an instrument to measure static torque. $$ There is now specific range requirement for your design. In other words, you can decide whether you want to design a torque instrument for low or high torques. $$ This is an individual assignment and not group work. $$ Using existing torque sensors to measure static torque and importing such a measurement via an electronic interface is not allowed, since the mobile phone sensors then become redundant in your design. The principle here is that your mobile phone sensors should be necessary for your design to be able to measure static torque. $$ Note that you are NOT asked to write an app. Neither are you allowed to download an $$all$-$in$-$one$$ app that does this whole assignment for you at the press of a button. You are allowed to use an app to RECORD the output of the sensor$($s$)$ that you use as base of your design. You HAVE to process the raw sensor outputs in your instrument. $$ Examples of apps that you are allowed to use are: Android $($SensorRecord$,$ Accelerometer Meter,...$)$ and iOS $($Gauges$,$ Sensors Toolbox $-$ Multitool$)$ This assignment therefore entails that you design and implement $($build$)$ some sort of a structure$/$rig that contains your phone. When the user wants to measure static torque with your smartphone instrument he$/$she will have to follow the following general procedure: Step $1$: place your structure$/$rig on the fastener that has to be torqued Step $2$: record the output of the specific onboard sensor$($s$)$ that you use in your design Step $3$: extract the recorded data from the phone Step $4$: process the recorded data according to your instructions $($note that a dedicated Calc$/$Excel spreadsheet that contains all of the necessary equations might be quite useful at this point$)$ In addition to a thorough design, you$$ll also have to determine experimentally what your instrument$$s characteristics are. The following characteristics are important: range, accuracy and precision. $$ A metal structure containing a number of $13$ mm bolts and nuts will be made available in the Electrical Engineering laboratory on which you can test your design. Assessment guidelines The final grade that you will obtain for this assignment will consist of two components: $$ A video and physical demonstration of the working instrument. This is a requirement, but will not count more than $2\%$ of the total grade for this assignment. $$ A technical report. This is a formal design report that discusses the following aspects: o Theoretical design $($note that each design choice should be motivated$)($~ $20\%$ of the mark$)$ o Design drawing $($not more than $3\%$ of the mark$)$ o The originality of your design $($not more than $5\%$ of the mark$)$ o Predicted response $($and sensor characteristics$)$ of the scale $($~ $10\%$ of the mark$)$ o Summary of the actual response and sensor characteristics of the scale $($including a comparison with the predicted response$)($~ $5\%$ of the mark$)$ o Critical analysis and future improvements that can be made $($not more than $10\%$ of the mark$)$ o Appendices that contain the formal experiments that were conducted to determine the range, accuracy and precision of the scale $($~ $45\%$ of the mark$)$