Skip to main content

Timeline for 5 V relay connected to Arduino

Current License: CC BY-SA 4.0

6 events
when toggle format what by license comment
Mar 28, 2021 at 15:21 comment added Transistor OK. Accept your answer instead of mine if yours is correct. Otherwise you'll confuse anyone looking for the solution. Thanks.
Mar 28, 2021 at 15:12 vote accept Tims
Mar 31, 2021 at 4:19
Mar 28, 2021 at 15:10 comment added Tims Not sure, but relay is acting perfectly after using INPUT_PULLOUT instead of HIGH pinmode for deactivating the relay.
Mar 28, 2021 at 15:06 comment added Transistor Typically the microcontroller's outputs are push-pull. You only need a pull-up if the output is open drain only. Do you know what yours is?
Mar 28, 2021 at 15:02 comment added Tims Thank you @Transistor. Wiring was correct. Turning off requires conditionally activating a 20K resistor (PULLUP). This is apparently done through code. I will add a solution below.
Mar 28, 2021 at 10:07 history answered Transistor CC BY-SA 4.0