A low-cost, digital RPM meter was build in order to determine the magnitude and direction of rotation of the reaction wheels.
A low-cost, digital RPM meter was build in order to determine the magnitude and direction of rotation of the reaction wheels.
Explanation of how the optical tachometer works.
For this application, a low-cost CNY-70 Infrared (IR) sensor was used.
This circuit is in charge of providing the right measurement of every cycle of the reaction wheel. It includes an anti-bounce section.
Angular speed of the reaction wheel after optical tachometer integration and validation.
