Kenneth Marcano
Hello! I am designing the circuits to condition the inputs and outputs of the ESP8266 and the RaspberryPi for the industrial environment, I did not have problems with the digital outputs and inputs, nor with the analog input of the ESP, but I was hindered by the analog output based on PWM, not I like the idea of ​​a low pass filter, will not you know of some other option to transform the PWM signal into analog voltage?
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thiagoralves
As far as I know, the cheapest and quickest way to make an analog signal from PWM is by using low pass filters. If you want something more "professional" you will have to use one of those I2C or SPI chips with true analog outputs.
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