faustf Posted March 20, 2018 Share Posted March 20, 2018 hi guys i have little problem i connect my orange pi zero directly to relay but not work the realy is HUI KE hk19f-dc 5v-sh in yellow box , but if i attach 3v and gnd of gpio work o_O anyone can help me?? thankz Link to comment Share on other sites More sharing options...
martinayotte Posted March 20, 2018 Share Posted March 20, 2018 You can not drive a relay directly from a GPIO, it doesn't provide enough current. You need to use either a transistor or a MOSFET to drive it from the GPIO. Link to comment Share on other sites More sharing options...
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