Adafruit
Square Silicone Button PWM Controller - 3 Wire - 3.6V to 12VDC
A squishy silicone button module with a built-in PWM controller and colour-changing power indicator. Press to cycle through three power levels — 100%, 70%, a...
A squishy silicone button module with a built-in PWM controller and colour-changing power indicator. Press to cycle through three power levels — 100%, 70%, and 35% duty cycle — with the illuminated power symbol glowing red, blue, or green to show the current setting. Long press for two seconds to turn on or off.
Originally designed for controlling heating pads in wearable thermal vests, this module is a simple way to add adjustable PWM power control to any DC project. It accepts 3.6–12VDC input and outputs the same voltage at the selected duty cycle via three wires (shared ground).
Key Features
- Three Power Levels – 100% (red), 70% (blue), and 35% (green) PWM duty cycle
- Input Voltage – 3.6V to 12VDC
- Wiring – 3-wire: red/black (power input), blue/black (PWM output, shared ground)
- Illuminated Button – Built-in power symbol LED indicates current level
- Long Press Control – Hold 2 seconds to turn on/off
- Silicone Housing – Soft, tactile button with satisfying press feel
Ideal For
- Wearable heating pad and thermal vest projects
- Fan speed control
- Peltier module power management
- DIY projects needing simple adjustable DC power
Package Contents
- 1× Square Silicone Button PWM Controller
Jargon buster
Plain-language definitions for the technical terms used above.
- duty cycle
- The fraction of time a signal or light source is switched on during a repeating cycle. On a proximity sensor, changing the duty cycle can affect detection range, response speed, accuracy and power use.
- LED
- A light-emitting diode is a small electronic component that lights up when current flows through it in the correct direction. In this kit, LEDs create the flashing effect, so polarity and correct soldering matter for the project to work.
- PWM
- Pulse Width Modulation is a way for a digital pin to simulate variable output power by switching on and off very quickly. It matters for controlling things like LED brightness, motor speed, or servo-style signals from a microcontroller pin.
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