LilyPad Accelerometer - ADXL335

Give your e-textile projects the ability to detect movement and orientation. The LilyPad Accelerometer is a three-axis motion sensor based on Analogue Devices' ADXL335 MEMS accelerometer. Whether you want to measure joint movement in a smart garment, detect inclination, or sense vibration, this board provides a simple analogue solution for your wearable electronics.

The ADXL335 outputs a distinct 0V to 3V analogue signal for the X, Y, and Z axes. While you can easily use these raw signals for basic motion sensing, calculating a true tilt angle requires converting the analogue voltage to a gravity measurement and applying some basic trigonometry.

Sewable E-Textile Design

LilyPad is a wearable e-textile technology developed by Leah Buechley and cooperatively designed by Leah and SparkFun. To ensure these components integrate seamlessly into your wardrobe (no pun intended), LilyPad relies on some specific hardware choices:

• Sewable Tabs: The LilyPad Accelerometer features five large conductive connection pads that let you stitch it directly into fabric with conductive thread.
• Low-Profile Build: Measuring just 20mm in outer diameter on a thin 0.8mm PCB, this board lays perfectly flat against your garments.
• Washable Hardware: Built to withstand real-world use, your finished clothing can be washed without damaging the electronics.

Wiring this analogue accelerometer to your wearable project gives you a straightforward way to track physical activity, monitor posture, or create costumes that react dynamically to your motion.

• Schematic
• Eagle Files
• Hookup Guide
• How to Use LilyPad Accelerometer (Cirkit Designer)
• Datasheet (ADXL335)
• Learn More About LilyPad
• E-Sewing Basics
• Tutorials:
  • Getting Started with LilyPad
  • Planning a Wearable Electronics Project
  • Insulation Techniques for e-Textiles
• 3D Cube Project
• D&D Dice Gauntlet
• GitHub Hardware Repo