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Description
MCP23017 16 bit GPIO Expander Demo Board
The MCP23017 provides 16 GPIO over I2C
Each pin can sink and source current when used as outputs, making it useful for driving hardware like a micro controller GPIO.
This pcb has 8 relays (G5V-2 low signal DPDT https://omronfs.omron.com/en_US/ecb/products/pdf/en-g5v_2.pdf) to test the GPIO output control, 4 buttons to test input control, and 4 GPIO connected to header pins to be used as inputs or outputs from outside the pcb.
The 2 interrupt pins are available on test points, and the relays have their own voltage input pin to keep them separate from the logic supply.
Feb 25,2022
2,101 views
MCP23017 16 bit GPIO Expander Demo Board
The MCP23017 I2C expander board has 8 relays, 4 buttons, and 4 spare GPIO header pins to get up and running with the device quickly.
2101
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0
Published: Feb 25,2022
Download Gerber file 21
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- RichardV31 Aug 30,2022
- Thomas Seitz Aug 21,2022
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