ASR PRO Voice Control Box

I. Inspiration

Based on the ASR PRO offline voice recognition module, we developed a portable voice control device. Drawing inspiration from the standard dimensions of conventional hard cigarette packs, we designed a compact housing to enable local, offline voice interaction without requiring an internet connection. This creates a convenient, pocket-sized voice‑enabled terminal suitable for DIY embedded projects and small smart desktop devices.

II. Structural Design

The overall casing adopts a square, rounded-corner flip-top design, with dimensions aligned to standard thick‑cigarette packs for easy handheld storage. It supports 3D printing fabrication.

1. Casing: A two-piece flip‑top structure with screw posts at each corner for secure lid attachment; the top surface features an array of sound‑emitting holes and a built-in speaker mounting area.

2. Actuator: A miniature servo motor is integrated into the side of the housing, with an external lever arm that moves in response to voice commands.

3. Internal Layout: The interior is divided into distinct zones, housing the ASR PRO voice processing board, lithium battery, and speaker, with components arranged separately to avoid interference.

4. The rear cover includes a cutout for switches and charging ports, with ample space reserved for wiring.

III. Functions and Application Scenarios

Core Functions

1. Offline Voice Recognition: No Wi‑Fi required—pre‑program wake words and multiple control commands allow local voice recognition upon power-up.

2. Servo‑Driven Actions: Upon recognizing a corresponding voice command, the side-mounted servo rotates its lever arm, performing mechanical actions such as toggling or unlocking mechanisms.

3. Portable Power Supply: A built-in lithium battery paired with a charging circuit enables long‑term operation away from mains power.

4. Audio Feedback: Equipped with a speaker, it plays prompt tones or voice announcements upon successful or failed recognition.

Applicable Scenarios

• DIY smart gadgets, automated desktop switches, and compact locking devices.

• Model automation, remote‑controlled ornaments, and interactive mechanical devices.

• Educational training: An offline voice‑plus‑servo integration case study for hands‑on learning.

If needed, I can condense this description into a 200‑word version or adapt it into a competition entry guideline format.