Hello, I plan to use the Opla IoT Kit (MKR IoT Carrier Board with a MKR WiFi 1010) for a monitoring project. But I need more DIO pins! Would you suggest:
a) Try to repurpose A0-A5 by somehow disconnecting the built-in Touch sensors?
b) Use an I2C IO expander, such as: Adafruit GPIO Expander Bonnet - 16 Additional I/O over I2C : ID 4132 : $9.95 : Adafruit Industries, Unique & fun DIY electronics and kits ?
c) Other?
Thanks for considering my question.
Best regards, Tom
Don't know what controller there is on that board but for some controllers the analog pins are digital, with analog reading as an extension. Have You checked Your board for that?
Yes, good thought. The Analog pins can be reset as DIO. My issue is that they are all in use on built-in stuff. A0-A4 are tied to built-in touch pads (with associated circuits) for human interaction. I'm wondering if one solution is to disconnect the built-in touch pads... and THEN use the A pins. Thanks for the reply!
My mistake missing that. I/O expander of some kind looks like the possibility. I2C devices are usual but also the shift register type, both for input or output are used.
@Railroader. the post says it is Arduino MKR WiFi 1010
Yes I know that but I don't know the contents of that board.
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