TheOwlBay
Classroom screen
Projector board with timer and noise meter — privacy-first
Timer
5:00
Noise meter
Manual mode by default — tap Quiet, Medium, or Loud. Microphone is optional.
Traffic light
Classroom screen combines a countdown timer, manual noise level buttons, optional microphone meter, traffic-light status, and a message area for the board. Default is manual noise — no mic until you opt in. Audio is analyzed locally and never uploaded. Link to spin wheel when you need a winner.
Why not a pile of separate widgets
Teachers want one URL on the projector: timer plus noise plus light. This page keeps six widgets without student devices or accounts.
How to use the classroom screen
Set timer and noise level, project fullscreen.
Mic is optional; manual buttons work without permission.
Privacy and storage
Mic audio never records or uploads. Noise level and text save in localStorage. Timer uses shared timer_core.js.
Who projects this screen
Elementary through high school rooms that need a calm board. Not LMS gradebook.
FAQ
Is the mic required?
No. Manual noise buttons are the default.
Is audio recorded?
No. The mic only drives the on-screen meter.
Can I link to the spin wheel?
Use related tools or spin wheel embed on your board.
How many widgets?
Six: message, timer, noise, light, fullscreen, presets.
Where is data stored?
localStorage on this device.