Arduino Nano 33 IoT and 4.Channel SPDT

Products & Technology Arduino & Seeeduino
#1

Hi,





I am trying to operate a grove 4-Channel SPDT Relay V1.0 with a Adruino Nano 33 IoT. It doesn’t seem to work properly. The SW-LED all turn on and off correctly, but the relay does not switch. In the documentation I see that the relay needs 5V to switch, but the Nano 33 IoT has only 3.3V, I think this is the reason for the unstable switching. How could I still use this relay?

#2

Hi there~

Yes, the 4 channel spdt requires 5v for close/open fully. if you use arduino nano 3.3v, it can not work well. thanks.