This simple device, built using an Arduino Nano and an A3144 Hall sensor, allows you to measure the RPM (Revolutions Per Minute) of a gear. The device is straightforward to construct and program, ...

Arduino-RPM-Write-to-File The master and slave sketches are used to save time per revolution data to an SD card using digital hall effect sensors and 2 arduinos. The master Arduino is the one that is ...