The Tuchuck board GPIO are 1.8v for J12 and J13.
To interface GPIOs to currently available shields/hats/peripheral boards pullup resistors need to be added to the hardware, to obtaing the typically 5v, or 3.3v available on the peripheral board,
The Tuchuck board does not currently allow this capability. Additional resistors, and jumpers should be designed into the tuchuck schema.
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