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Rechargeable Air Mouse
Author: Răducu Ioan Ștefan
Introduction
This project features a rechargeable air mouse, a handheld device that allows users to navigate a screen from a distance. It functions similarly to a standard mouse, featuring left and right-click buttons. However, the cursor is controlled by adjusting the device's angle and position. This creates a user experience similar to using a TV remote or a laser pointer.
The primary purpose of this device is to assist users during presentations. Beyond this, it serves a variety of other applications, such as interacting with digital whiteboards or operating a computer from across the room.
The inspiration for this project came while observing a professor using a laser pointer to highlight information on a projector. I realized I could develop a device that not only highlights but also allows the user to select text, draw, and navigate through slides.
These capabilities make the device ideal for professional presentations, creative tasks, and even free time activities.
General Description
The core of this project is the ESP32 DevKit V1 (WROOM-32D), featuring an integrated antenna for wireless communication. It interfaces with a computer via Bluetooth using the HID (Human Interface Device) protocol. For motion tracking, the microcontroller is connected to an MPU6050 (GY-521 module) using the I2C protocol.
The power system consists of a 3.7V LiPo battery connected to a TP4056 charging module. To meet the power requirements, an MT3608 step-up converter boosts the battery voltage to the 5V necessary for the ESP32 and the IMU. Additionally, the microcontroller is wired to monitor the battery's voltage levels in real-time.
User feedback and interaction are handled through LEDs, which display the battery status and operating mode, while buttons provide the main interface for computer interaction and power control.
Hardware Design
List of Components
- 3.7V Li-ion Battery
- Perforated Boards
- 470mF and 100nF Capacitor
- 2x 100kOhm Resistors
- 5x 330Ohm Resistors
- Wires
Schematic
Software Design
Coming Soon
Results
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Conclusions
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Download
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Jurnal
09.05.2025: The initial version of this page is available, posted the introduction, general description and the block schema.
Bibliografie/Resurse
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