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Completed project

Indoor Ambient Light

A rechargeable indoor ambient light with a soft silicone body and a printed face — four warm-white LEDs, a 180 mAh cell and USB Type-C charging.

This page shows the product, the board inside it and the production behind it. It is client work — a product we developed for a client.

The indoor ambient light held in one hand, with the printed face on the silicone body lit up in pink.
The finished product
The base of the indoor ambient light, showing the white cover plate, the embossed power button and the USB Type-C charging port.
The base — power button and USB Type-C port

Overview

This is a small ambient light for a room, in a soft silicone body that carries a printed face. The electronics sit on a compact board in the base, under a white cover that holds the power button and the USB Type-C charging port — so the light is charged rather than opened.

The silicone body is what turns four LEDs into one even glow: the light is diffused through it rather than showing as four separate points. On the board the LEDs sit out towards the edges, so the whole body lights up rather than just the middle of it.

Specifications

ItemValue
LEDs4 × 2835 warm white
Battery180 mAh lithium
Charging portUSB Type-C
Charging ICTP4057
Battery protection3130
InputsTactile power button and vibration switch
Status indicatorsRed and green LEDs
EnclosureSoft silicone body with a printed face

Electronics design

The board was designed for this product rather than adapted from an existing one. It carries four 2835 warm-white LEDs placed out towards the edges, a microcontroller, and the power side of the product: a TP4057 charging IC for the USB Type-C input, a 3130 protection IC for the cell, and a MOSFET.

A tactile button and a vibration switch are mounted on the board, alongside red and green indicator LEDs. The component list below is what the board was built from.

The indoor ambient light PCB before assembly — four warm-white LEDs at the board edges, a microcontroller, a charging IC, a protection IC and a USB Type-C receptacle.
The board before assembly — component sideReal evidenceIndoor Ambient Light
Bill of materials for the indoor ambient light board, listing component categories, specifications and quantities.
Bill of materialsReal evidenceIndoor Ambient Light

PCB layout

The layout was drawn from the design and released for fabrication and assembly. The LEDs sit out towards the board edge so the light spreads across the whole silicone body rather than pooling in the centre, and the charging and protection parts are grouped together at the power end of the board.

The view below is the board as it appears in the design file.

PCB layout of the indoor ambient light board, showing the LED positions at the board edge, the charging and protection section, and the component outlines.
PCB layout — design viewReal evidenceIndoor Ambient Light

PCBA and production

Fabrication and assembly ran through the manufacturing partner for the project, with our team driving the design and the testing. The boards came back assembled and populated, in panels and then in trays.

The rework station is where individual joints are corrected by hand. It is a normal part of the line rather than an exception to it.

Assembled indoor ambient light boards in production trays, populated with LEDs, ICs and USB Type-C receptacles.
Assembled boards, tray outputReal evidenceIndoor Ambient Light
Rework — hot-air stationReal evidenceIndoor Ambient Light

Assembly

Assembly is where the parts become the product: the board, the white base that carries the button and the charging port, the silicone body, and the printed face on the front.

The video below is the bench where that happens — boards, housings and printed parts being handled and put together.

Assembly — boards and housings at the benchReal evidenceIndoor Ambient Light

Functional testing

Boards are powered up and checked with the LEDs lit. It is the check that catches a board which looks correct but does not light.

The video below is that test at the bench.

LED test on assembled boardsReal evidenceIndoor Ambient Light

What we developed

  • Product definition — a rechargeable ambient light in a soft silicone body, taken from the requirement to a buildable specification
  • Electronics design — the circuit and the component list for the board that carries the LEDs, the charging and the button
  • PCB layout — the board drawn and released for fabrication and assembly
  • Enclosure and assembly — the board fitted into a silicone body with a printed face, over a base carrying the button and the charging port
  • Component sourcing — the components on the board purchased by us
  • PCBA — fabrication and assembly through the manufacturing partner for the project, with our team driving the design and the testing

Related services

Electronics Product Development

How we take a product from a use scenario and its requirements through engineering, PCB, enclosure, assembly and testing.

See how we develop a product

PCB Design

Schematic, layout and design-for-manufacturing review, handed off cleanly to assembly.

See PCB design

PCBA Manufacturing

Fabrication, components, SMT and through-hole assembly, testing and QC, coordinated end to end.

See PCBA manufacturing

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