Important changes to forums and questions
All forums and questions are now archived. To start a new conversation or read the latest updates go to forums.mbed.com.
11 years, 3 months ago.
How do I get more input IOs?
Hi,
I'm new to mbed and thinking of using it for a prototype I'm building.
The thing is I need more input IOs in my project and was wondering if there is a simple solution?
I would like to see an IC with multiple inputs/outputs that connects through SPI/I2C and sends messages on IO changes. I need around 60 input IOs which rarely change.
This is a better solution than using a mux in my opinion.
Any ideas?
1 Answer
11 years, 3 months ago.
IO expander is the search term you are looking for. There are many different ones, both for I2C and SPI (in that case it is essentially just a shiftregister), and also with interrupt output included they exist.