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Automatic night light

A small night light that turns itself on when the room gets dark and off again when it gets light. It runs on a simple, fully analog circuit, with no microcontroller and no firmware.

Client
Consumer products company
Scope
Hardware design, testing and manufacturing setup
Timeline
3 months
Delivered
Board design, test results and manufacturing files

The challenge

Small enough to plug in anywhere, safe enough for the US market

The client wanted a night light that switches on and off by itself, glows on the top and the sides, fits in a very small housing and costs as little as possible to build.

Even at that size, the electronics had to meet US safety requirements, and the switching had to stay steady at dusk instead of flickering on and off.

What we built

A fully analog light-sensing circuit

Hardware

Night light board

A compact board where an analog circuit reads the ambient light and drives the LEDs, with no processor involved.

  • Ambient light sensor
  • Analog hysteresis for clean on and off switching
  • LEDs that light the top and sides
  • Compact layout for a small housing
  • Ultra-low-cost component selection
  • Designed to meet US safety requirements

Testing

Tested before handover

Complete testing of the design before it went to manufacturing.

  • Light-sensing and switching tests
  • Safety-focused design review
  • Verification of the final design

Delivery

Ready to manufacture

A tested, cost-optimized design, plus help organizing its manufacturing.

  • Schematic and PCB layout
  • Complete testing
  • Cost optimization
  • Manufacturing files and organizing production

Result

Simple, safe and made at scale

  • Manufactured at scale, at an ultra-low unit cost.
  • No firmware at all, just an analog circuit that switches cleanly at dusk and dawn.
  • Built for the US market, in a small housing that glows on the top and sides.
  • Three months from the start of the project to a fully tested design.

Your project

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