Left here for archival purposes.

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By uhrheber
#3616
gerardwr wrote:Had no clue what a MCP23017 is, it's a I2C IO-expander with 16 GPIO pins.

I read somewhere about I2C IO-expanders with some digital AND analog IO's. Have some experience with them? Could be a solution for all the people that cry over not having a connection to the ADC TOUT pin on their ESP board.


Try this:
http://www.analog.com/en/analog-to-digi ... oduct.html

8 pins that can be configured either as 12bit ADC, 12bit DAC, digital input or digital output. Internal reference, 0.2%
Should work even with the ESP-01.
User avatar
By gerardwr
#3619
uhrheber wrote:Try this:
http://www.analog.com/en/analog-to-digi ... oduct.html

8 pins that can be configured either as 12bit ADC, 12bit DAC, digital input or digital output. Internal reference, 0.2%
Should work even with the ESP-01.


Nice, especially the fact that EVERY pin can be either DIGITAL or ANALOG.

Price ($3.82 from 100pcs) is not too bad, around the price of an ESP8266 ;)