Add high-resolution, instrument-grade capacitive sensing to your designs
Trill is a family of touch sensors that use capacitive sensing to precisely track finger position, movement, and touch size. Inspired by the way our hands control and articlate sound from musical instruments, Trill makes high-resolution touch sensing accessible to artists, designers, musicians, and engineers who want to bring rich, tactile interaction into their projects. Built for reliability, Trill sensors are robust enough for installation work and consumer-ready products, and are already used in many devices shipping today.
Whether you’re building instruments, installations, wearables, or experimental interfaces, Trill gives you a flexible set of sensor shapes and formats, from ready-made sliders and pads to fully custom interfaces built from conductive materials.
Key Capabilities #
- High-resolution capacitive touch — track position, movement, and touch size with precision.
- Multiple form factors — sliders, pads, rings, hex tiles, flexible strips, and a DIY breakout.
- Chainable and scalable — combine multiple sensors for larger, custom surfaces and complex interfaces.
- Designed for Bela, works everywhere — built for Bela but compatible with any system that speaks I²C (Arduino, Raspberry Pi, Teensy, and more).
The Trill family #
Each Trill sensor combines a specific physical form factor with a particular style of sensing, making it easy to choose the right part for your interface:
Trill Flex
- Sensor made from flex PCB, so it can bend around any curve
- 1-axis continuous slider by default but can be anything
- Wrap it around curves, embed in textiles, or design custom flexible forms
- Sensor is detachable, and can be replaced with a custom one of your own
- Dimensions: 36mm X 22mm (base), 146mm X 22mm (detachable sensor), 176mm X 22mm (when combined)
Full technical documentation and schematics are available in the Resources section.
Design beautiful, custom touch interfaces #
Trill was created to make it straightforward to add rich, nuanced touch interaction to digital projects. You can use individual sensors as self-contained controls, or chain several together to build larger surfaces and multi-part interfaces. Each sensor can be trimmed, embedded, covered, and calibrated in software, so you can tailor the feel and responsiveness to your materials and context.
For fully custom designs, Trill Craft lets you build interfaces from conductive fabric, copper tape, metal, water, or any other conductive material. Trill Flex extends touch sensing onto flexible PCBs, opening up curved, wearable, and textile-based projects. All Trill sensors expose their data over I²C, making them easy to integrate whether you’re working with Bela, microcontrollers, or single-board computers.
Tech Specs #
Trill Bar #
Trill Square #
Trill Craft #
Trill Ring #
Trill Hex #
Trill Flex #
Resources #
- Trill datasheet (download)
- Libraries and examples for Bela, Arduino, Raspberry Pi, Teensy and more
- Getting started guide
- Tutorials for working with Trill
- Hardware schematics and PCB (KiCad)
- Community forum
Buy Trill Sensors #
Trill sensors are available individually or as a family, through our network of resellers and directly from us.
