Multiple MCP23071

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sandman · #1 Post by **sandman** » 10 Sep 2018, 06:25

Hi ALL

Id like to expand a NodeMCU unit with more I/O. I understand I can use 2 or 3 port expanders as long as I use different I2C addresses ? The I/O for regular input switches and output relays stable ? I need at least 10 input and 10 outputs at a single point...

Thankyou..Peter

grovkillen · #2 Post by **grovkillen** » 10 Sep 2018, 07:30

Yes they are reliable. Some PWM features are experiencing some buggy behavior at the moment if I don't remember it incorrectly. In any case it's working. Please try and come back here with any other questions you might have.

sandman · #3 Post by **sandman** » 10 Sep 2018, 08:16

Thankyou for the quick response.....is there a limit on the number of I/O devices in the configuration ie: 12 ? DO I need to alter the source and re-compile as I've read in earlier posts ?

Regards..Peter

grovkillen · #4 Post by **grovkillen** » 10 Sep 2018, 08:27

If you need more that 12 tasks you need to recompile the bin yourself but we cannot support you with that. We might have time to do a dynamic way of doing things which would allow more than 12 but we are not (yet) doing this full time

Multiple MCP23071

Multiple MCP23071

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Re: Multiple MCP23071

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