This push-button fan switch design includes a timed automatic shut off, connections to the mains, and other minor changes from previous Design Ideas.

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.

His solution to the problem was to get rid of the toggle switch used to turn it on and replace it will a home-made momentary push button switch.