Matthias Blankertz
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Matthias Blankertz
Looking at the schematic it is clear why this cannot work: - the rp2040 gpio21 has the internal pullup, which is what is activated when the pin is declared as...
> @drowfx So if I understand correctly, pin 5 (gpio21) _is_ 5v-tolerant? The gpio21 of the rp2040 controller itself is _not_ 5V tolerant. The pin 5 of the external connector...