Hello! I have issue with an i2c chip connected to esp32. Got a cool controller for tests, builded on esp32-pico. It works with esphome. but some functionality are not supported. Particularly, 4 buttons near oled. Buttons connected to chip marked PCA9536D. Have anybody some ideas, how i can make it work in esphome?
Have you already tried some?
I use this:
with this:
MCP23017 Serial Interface I2C SPI MCP23S17 Bidirectional 16-bit I/O 10Mhz
And that work very well.
Why are you SHOUTING
in this device MCP23017 used for extension of inputs . Buttons are on pca9536.
sorry. corrected
Both, input and/or outputs.
Yes, on this controller MCP23017 connected to multifunction connector (inputs/outputs/digital interfaces). But I need advice about pca9536.
My advise was to see if those components do work with it…
Given the lack of response here, perhaps use something else. Add support for PCA9536 I/O module · Issue #1014 · esphome/feature-requests · GitHub
Sorry, forgot you have an existing advice. Take a look at using the arduino library as a custom component in esphome.
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Starting my extended i2c journey, and just wanted to clarify the physical electronics side of things, so rather than starting a new thread here I am.
Assuming the block diagram below… could the two units on either side of the long cable be the PCF8575 modules?
I figured using the PCF8575 modules to extend over the longer cable would be handy because I could power both modules from a sing power source.
I am just not sure the PCF8575 modules would do the job, but wanted to check?
Anyone 
