I want to know if it's possible to use an Arduino output to directly power the coils of a subminiature latching relay. The one I have in mind is the Hongfa HFD3/5-L2, which looking at the data sheet takes a 5v supply to energize the coils. Will the Arduino be able to reliably supply the current to …

Driving latching relays directly

UKHeliBob May 4, 2025, 1:32pm 2

How much current does the relay take to operate ?

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