Access to additional I/O

Inquiry and support for Freematics products
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mj43
Posts: 2
Joined: Sun Jan 14, 2018 12:49 am

Access to additional I/O

Post by mj43 »

Is it possible to 'easily' access any of the I/O pins? For my project I need access to I2C and analogue pins to add some additional sensors. Are any of these available on the ten pads on the edge of the board?
stanley
Site Admin
Posts: 1018
Joined: Sat Mar 01, 2014 3:15 am

Re: Access to additional I/O

Post by stanley »

Two GPIO pins (GPIO32/33) which can be used for analog input are led out to the 4-pin connector on the enclosure.
mj43
Posts: 2
Joined: Sun Jan 14, 2018 12:49 am

Re: Access to additional I/O

Post by mj43 »

Hi thanks, but aren't used by the GPS? Is there any I/O available on the 10 pins circled in the attached file?
fdsh
Posts: 4
Joined: Sun Aug 30, 2020 9:14 pm

Re: Access to additional I/O

Post by fdsh »

I know it's an old thread. Did you find out how to use additional GPIOs?
stanley
Site Admin
Posts: 1018
Joined: Sat Mar 01, 2014 3:15 am

Re: Access to additional I/O

Post by stanley »

Only two exposed GPIO can be used.
fdsh
Posts: 4
Joined: Sun Aug 30, 2020 9:14 pm

Re: Access to additional I/O

Post by fdsh »

Can the external GPIOs be used to connect an I2C device? This would be an easy way to expand GPIOs, e.g. using a chip like this: https://www.instructables.com/id/IO-Exp ... d-Arduino/
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