Ripon asked in Consumer ElectronicsCameras · 4 weeks ago

can 4 sensors such as temperature and humidity, water sensor, fire sensor, and smoke sensor be connected to one nodemcu chip?

can 4 sensors such as temperature and humidity, water sensor, fire sensor, and smoke sensor be connected to one nodemcu chip or 4 different sensors for 4 different chips?

2 Answers

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  • 4 weeks ago

    As far as I can see, nodemcu is just the firmware that is used on ESP devices from Espressif, so you need to be looking at the different ESP devices.

    You will be able to do it easily if all your sensors are I2C. The ESP devices are limited in analog inputs.

    This one only connects to a single ADC channel and only measures between 0 and 1V

    https://www.espressif.com/sites/default/files/docu...

  • 4 weeks ago

    Yes, but you'll need to mutiplex them - you can only read one at a time.

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