Bluetooth V2.1 SPP Setup vs Donut timer

The iOS portable devices will connect with the Bluetooth Low Energy (BLE) to serial port converter devices and exchange data with them bi-directional. The serial port includes RS-232 or RS-422 RS-485 interfaces. The user will test the APP with the SCADA, Robot, UAV, PLC, CNC or etc. with the BLE to serial port devices. The APP will be customized to meet the specific applications.

Donut Presentation Timer An intuitive timer app designed for smart time management in presentations, speeches, seminars, classes, cooking, cleaning, and more. With a beautiful donut-shaped visual, you can see your time allocation for each section at a glance. Key Features ■ Intuitive Donut-Shaped Timer Visualize your entire schedule with a color-coded donut chart. See which section you are currently in and how much time remains—instantly and clearly. ■ Flexible Section-Based Timing Create multiple sections to match the flow of your presentation. Assign a name, duration, and color to each section for precise control. ■ Lap Time Tracking Record actual presentation times with the built-in lap time feature. Compare planned time and actual progress in real time to stay on track. ■ Save Timer Presets Save frequently used timer setups with custom names. Quickly reuse the same configuration for recurring presentations or meetings. ■ Customizable Design Choose from over 10 color themes. Customize the look of your timer to match your style or the occasion. ■ Completion Notifications Get notified with sound and vibration when a section ends or the timer finishes. Stay aware of time even when you’re not looking at the screen. Perfect For Presenters and public speakers Teachers and instructors running classes or seminars Meeting and workshop facilitators Students and anyone who wants better time awareness People who want to time cleaning sessions efficiently Anyone who keeps burning their stew Anyone giving presentations with multiple sections Even if time management isn’t your strong suit, this app helps you stay focused and confident. Upgrade your presentations with a functional and elegant donut-shaped timer—and deliver like a professional.