A simple Arduino-based tachometer




Chris, from PyroElectro.com, proposes a comprehensive tutorial on how to make a simple, yet effective, Arduino-based tachometer.
schematic.png




The circuit is very simple: an IR led is coupled with an IR phototransistor to detect possible interruptions of the light beam, while the Arduino is responsible to calculate the time interval between two such events. Finally, a LCD is used to display the current RPM to the user.
To validate his project, a typical computer fan has been used in the set-up and the outcomes have demonstrated to be very close to the true RPM value (2600 +/- 100 RPMs).
The bill of materials, as well as the schematic, the source code and a detailed tutorial on how to build the circuit is available here.




This Post / Project can also be found using search terms:

  • simple arduino car tachometer
  • simple arduino tachometer
READ  Tinkering and coding with teens for a future of digital making

Leave a Comment

*
= 4 + 8

(Spamcheck Enabled)

Read previous post:
Arduino ultrasonic range finder

Hello, in this project i want to show and explain you a range sensor with ultrasonic and a 20x04 lcd...

Close
Scroll to top