A tachometer is a device that is used to measure the speed of rotation of any device. Using the analog voltage reading property of an arduino, this can be easily implemented using the appropriate parts.
Tachometers have a variety of applications, including measuring the speed of dc motors in order to ensure they are running according to specifications.
Tachometers have a variety of applications, including measuring the speed of dc motors in order to ensure they are running according to specifications.
In order to make a tachometer, we will have to convert the speed of rotation into a readable form. The only form the arduino can read is in terms of electrical voltage. It is well known that if voltage is given to a motor the motor wheel will turn, the speed of which is determined by the amount of voltage given. However the converse is also true, meaning that if we were to rotate the motor by ourselves, we can obtain a voltage across the two ends of the motor terminals.
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