Consider the following sketch. With nothing connected to the input ports, this prints "1111111111111111". If I apply 3v to the first port, it still prints "1111111111111111". If I apply ground to the first port, it prints "0111111111111111". I would like it to be the opposite. With nothing conne…

Why are MCP23017 (port extender) input pins high by default?

vijayvikma December 23, 2018, 2:41pm 3

so can it be handled in code?or a resistor required?

Topic		Replies	Views
Arduino <-> MCP23017 - Verständnissfrage Deutsch	7	2729	May 6, 2021
MCP23017 pullup resistors LEDs and Multiplexing	3	12708	May 6, 2021
MCP230xx Pullup function from adafruit library General Guidance	12	2377	May 5, 2021
Nur mal ein Tip zum MCP23017 Deutsch	16	4560	May 6, 2021
MCP23017 I/O Expander Help General Electronics	51	9900	May 6, 2021