Connecting a relay
This is kind of a rookie question
Is there anyone that has tried to connect a opto-isolated Relay Module to a Metawear?
Did you use a 3.3v High?
Can you elaborate on what you trying to accomplish? What sensor specifically are you looking at?
I am looking for controlling a switch - on and off - by using a
3V/3.3V Relay High Level Driver Relay Module for Arduino Optocoupler
By using this my plan is controlling a lamp by the mobile phone
The max voltage on the GPIO pins is 3V so I don't see why this specific optocoupler wouldn't work with the MetaWear. You can use the GPIO module to set or clear the dout signal.
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