Make a moisture sensor
Build a sensor that measures liquid content. This works because moisture changes the resistance between two metal contacts.
Sensor Hacking
Step 1
Build a sensor that measures liquid content. This works because moisture changes the resistance between two metal contacts.
Final steps
You're almost there! Complete all the steps, bring your creation to life, post it, and conquer the challenge!
Get 7 days of DIY for FREE!
Our Mission
To create a safe space for kid creators worldwide!
Games & Tools
2025, URSOR LIMITED. All rights reserved. DIY is in no way affiliated with Minecraft™, Mojang, Microsoft, Roblox™ or YouTube. LEGO® is a trademark of the LEGO® Group which does not sponsor, endorse or authorize this website or event. Made with love in San Francisco.