A humidity sensor module that measures relative humidity from 0 to 100%.
It outputs an analog signal from 0 - 5 volts corresponding to the percentage of humidity in the air.


It can be used to measure the humidity in the air and combined with other littlebits modules to turn on or off controls to correct the situation or send you alerts.

  • Comments (34)
  • ani the bunny about 3 years ago


  • bham184 about 3 years ago

    Great idea! I would like to use something like this to drive a relay that would shut my humidifier on and off to control the room to a specific RH.

  • Jamesxiao2024 about 3 years ago

    ummm... cooool

  • william1228 about 3 years ago

    nice idea best of luck

  • JackANDJude about 3 years ago

    I like it :) It could be useful as part of a smart home monitoring device, and as a tool for science educators. Good luck!

  • Scott_pdp about 3 years ago

    Also could be used to automate environment conditions within animal habitats.

  • bitronics about 3 years ago

    cool! I cast my vote for it, hope others do the same!

  • JackANDJude almost 3 years ago

    Congratulations on getting 1000 votes! :)

  • moab almost 3 years ago

    That is epic

  • cheeselab almost 3 years ago

    i want that bit

  • philipmcnabb almost 3 years ago


  • micafranco almost 3 years ago

    Yup !! I like it

  • isoliprince almost 3 years ago

    I really like it.. Well done

  • jomastyre almost 3 years ago


  • fredjames almost 3 years ago

    Very creative work.. Really good

  • jomastyre12 almost 3 years ago

    I want that bit as well

  • juanbell almost 3 years ago

    Really good

  • RihannaMills almost 3 years ago

    Wonderfull Job

  • earlcollins almost 3 years ago

    Thanks for share

  • Jazzken almost 3 years ago

    Wonderful Idea

  • jasskr7 almost 3 years ago

    I love this

  • RosieKr almost 3 years ago

    Love this project

  • jarodfoley almost 3 years ago

    Congratulations ! Great work

  • Maven almost 3 years ago

    It's fantastic idea you have here for environmental measurements, in fact I'm currently working with a project for a littleBits challenge and this is exactly what I need to make it work perfectly!! Please let me know of any progress on your bit or perhaps any tips to build my own for now, thanks. :D

  • Soniarozer almost 3 years ago

    This is awesome

  • ssreekak almost 3 years ago

    A very useful bit indeed....

  • SunnyMessi almost 3 years ago


  • snapman almost 3 years ago

    this could ome in pretty handy avery great idea!

  • nicholassscott over 2 years ago

    I really like it.. Well done

  • alanperez over 2 years ago

    Amazing!! Love it.

  • shaiss over 2 years ago

    Do you have any sketches for how you made your 8bit DAC and the module?

  • wizcomp150 over 2 years ago

    Humidity sensor is a must for school science projects

  • shaiss over 2 years ago

    What is the purpose of all the resistors on there? Is there an IC or MCU somewhere underneath? Any more detail would be great so others can learn how you built this. Thank you!

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