Gas sensor support on the PCB + software questions about ebusd-esp HOT 5 CLOSED

answering my own question on the input pin level shifting, it seems the GPIO pins are 5V tolerant but can sink only up to 20-25mA. so a 10K resistor in series would be more than enough to protect the pin, if one really wanted.

The other questions still stand though :)

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I decide to jump ahead. I did as I planned, soldered the MQ5 module's 5V supply line on the IN pin of the TS1117 and took GND and D7 from J3, to bring to the MQ5 gas sensor module. I can see the gas sensor is nicely working, when testing with lighter gas, I can see the DO line of the module go from 'H' to 'L' and the green 'gas detected' LED goes on. And I can see the Wemos also picks up the pin state correctly in the web PIN config screen. I'm still not convinced this is the designed way so I'm leaving this open for comments.

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@john30 Now that the adapter is finally providing proper heater messages via mqtt, how can I get the state of the other wemos input pins, such as the gas/switch input? And how to set the pin output levels? And interact via i2c / single wire devices?

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for the time being you can only use the JSON format to interact with the PINs and for now this is only for on/off and analog read, as well as I2C temp sensors configured in the UI

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Project stalled, other prios came in. Also ebus adapter is not responding anymore, needs reflash? Tbc later.

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