Conclusion and Call to Action The High Power H-Bridge Motor Shield for Arduino is a highly versatile and powerful tool that can significantly enhance your Arduino projects.

To solve the problem without sourcing a new switch, [Jean-Noel] built his own Arduino based Dahlander switch. This consists of three relays that select the wiring configuration for each speed mode.

I used an LCD shield to display the current temperature and speed of the fan, but you can use the circuit without the LCD display. You also need to select the transistor by the type of fan that you ...