
Mission Description
- Context: Continuing the theme of keeping a good learning environment, you’ll upgrade classroom noise monitoring with a Noise-O-Meter. This device doesn’t just warn when it’s loud – it actually shows how loud it is, almost like a sound thermometer!
- Task: Use the sound sensor (microphone) on the Junkbot Core to measure noise levels. Program the LED matrix to act as a bar graph or volume meter. As the noise increases, more LEDs or higher bars light up. You can mark levels (for example, 0 to 5) where 0 is silence (no lights) and 5 is very loud (full lights or a big icon). The device continuously updates in real time as noise changes.
- Expected Output: A live sound level display. In action, if the class starts whispering, maybe only one tiny bar or a single LED lights up. If everyone is chattering or shouting, the LED matrix fills up or turns fully red indicating maximum volume. This visual feedback helps the class self-regulate and shows how sensors turn real-world data (sound) into a readable display.
Student Goal
Use the sound sensor (microphone) on the Junkbot Core to measure noise levels. Program the LED matrix
to act as a bar graph or volume meter. As the noise increases, more LEDs or higher bars light up. You can mark
levels (for example, 0 to 5) where 0 is silence (no lights) and 5 is very loud (full lights or a big icon). The device
continuously updates in real time as noise changes.
Mission Information
Status
Open
Deadline
December 31, 2025
Category
School
Grade
G3 — Explorer Missions
Rewards
Recognition, Internships, Prizes
Presented by

Ready to Join This Mission?
Take on the challenge and make a difference with Noise-O-Meter (Sound Level Visualizer).