Understanding FlatFlap

FlatFlap is one of the thinnest flapping actuators available - its flapper just measures 0.3mm thin! Designed for low-force applications, FlatFlap can adds dynamic motion to creative and interactive projects. Whether used for artistic installations, interactive displays, or lightweight robotic applications, this compact actuator delivers eye-catching movement with minimal effort.

In this guide, we'll explore how FlatFlap works, its installation process, and how to control it.

What is FlatFlap?

The FlatFlap actuator is a unique flexible PCB-based actuator with an integrated aluminum stiffener, designed to create a low-force flapping motion. Its magnetic system converts electrical energy into mechanical movement, making it an ideal solution for projects requiring delicate, organic motion.

How Does FlatFlap Work?

The FlatFlap actuator is made from:

• A planar copper coil embedded in its flexible PCB
• A 10mm N52 neodymium magnet on its back
  

When electric current flows through the coil, it generates a magnetic field that interacts with the magnet, causing the flap to attract or repel. By alternating the current direction, FlatFlap can generate a flapping motion.

Motion Control

• Simple On/Off: FlatFlap can be activated with a direct DC current (one pin connected to ground and the other to Vcc) causing it to move in one direction.
• Motion: By applying a square wave signal at frequencies between 3–25 Hz, it can flap continuously.
• Smooth Organic Motion: Using a smooth PWM (Pulse Width Modulation) signals generated with our eDriveCell and CodeCell, you can create more natural and controlled movements.

What's Included in the Box? 

Each FlatFlap kit contains:

• 1× FlatFlap actuator
• 1× Blue/Pink Color-Changing Sticker
• 2× M1.2 screws

Installing FlatFlap

FlatFlap is designed for easy attachment to any smooth surface using its peelable adhesive back. It can also be screwed in place using the included M1.2 screws.

Installation Steps:

1. Clean the mounting surface to ensure strong adhesion.
2. Peel off the adhesive backing (3M467) using tweezers.
3. Press the FlatFlap firmly onto the surface.
4. (Optional) Use the M1.2 screws for additional security.
5. (Optional) Attach the Blue/Pink Color-Changing Sticker for added visual effects.

Note: The reflective aluminum flap is not polished and may have minor scratches due to its manufacturing process.

Getting Your FlatFlap Moving

If you purchased FlatFlap as a standalone actuator, you can manually test its movement:

1. Connect one pin to 5V and the other to GND → The flap will move in one direction.
2. Reverse the connections → The flap will move in the opposite direction.

To automate this process, you can:

• Use transistors or an H-Bridge module to switch the connections. An H-Bridge is a circuit configuration composed of four transistors arranged in an "H" shape, allowing for bidirectional control of an actuator by reversing the current flow.

Keep things tiny

Solder the CoilPad directly to our DriveCell module to keep things compact. This has a DRV8837 H-Bridge driver packed into the smallest package, designed to handle low-power DC motors and actuators. 

Ready to start experimenting? Grab a FlatFlap today and bring motion to your next project!