PCBA  Images

About TECircuit

Found: TECircuit has been operating since 2004.

Location: An electronics manufacturing service(EMS) provider located in Shenzhen China.

Item: Customizable EMS PCB, offers a full range of one-stop shop services.

Service: Printed Circuit Board (PCB)and Printed Circuit Board Assembly(PCBA), Flexible Printed Circuit Board(FPC), Components Sourcing, Box-Building, Testing.

Quality Assurance: UL,ISO 9001, ISO 14001, ISO 13485, ITAF 16949 andcomplied with ROHS and REACH.

Factory Pictures:
Company's own plant : 50,000 sqm; Employees : 930+; Monthly production capacity : 100,000 m2

PCBA  Applications

• Precision Desktop Navigation: The PCBA enables cursor control through the manual rotation of a stationary ball, converting this motion into precise digital signals. This provides an efficient alternative to traditional mice, requiring minimal desk space and no surface movement.

• Specialized Professional Workstations: It is integral to devices used in fields like CAD/CAM engineering, digital content creation, and financial trading. The PCBA supports high-resolution sensors and customizable buttons, allowing professionals to execute complex commands and achieve pixel-perfect control without arm fatigue.

• Ergonomic and Accessibility Solutions: The PCBA drives assistive technology devices designed to reduce strain. By keeping the device stationary, it minimizes wrist and shoulder movement, making it beneficial for users with repetitive strain injuries (RSI), limited mobility, or those seeking a more comfortable long-term computing posture.

• Industrial and Control Room Environments: Engineered for reliability in harsh or confined settings, such as manufacturing floors, broadcast studios, or server rooms. The PCBA is often built to be more dust-resistant (as the main ball can be easily cleaned) and functions on uneven or non-ideal surfaces where an optical mouse would fail.

• Gaming and Customizable Control: In gaming-grade trackballs, the PCBA is optimized for speed and responsiveness. It supports high polling rates for minimal input lag, onboard memory for profile storage, and extensive programmability for buttons and scroll functions, catering to gamers and power users who prefer trackball input.

PCBA Features 

1. High-Resolution Optical or Mechanical Sensor: At its core, the PCBA integrates a sensor that reads the trackball's movement. Modern designs primarily use a high-DPI optical sensor (like the ADNS-9800 laser sensor) to image the ball's surface. Some designs may use mechanical rollers, but optical sensing is standard for accuracy. The PCBA processes these images to determine the direction and speed of rotation.

2. Ergonomic Input Matrix and Controller: The board features a multi-button input matrix connected to a dedicated microcontroller (MCU). This MCU handles all user inputs: it debounces button and scroll wheel clicks, manages side button controls, and in advanced models, supports programmable macros and DPI switching. The layout is designed for thumb, finger, or multi-finger operation based on the ergonomic model.

3. Advanced Power Management IC (PMIC): For wireless models, the PCBA employs a sophisticated PMIC to maximize battery life. It manages power to the sensor, MCU, and wireless radio with high efficiency, often including ultra-low-power sleep modes that activate when the ball is idle. This enables wireless operation over weeks or months on a single charge.

4. Multi-Mode Connectivity (RF and Bluetooth): The PCBA integrates reliable connectivity modules. Most include a proprietary 2.4GHz RF dongle for lag-free, interference-resistant performance, often using Nordic Semiconductor or similar chipsets. Additionally, Bluetooth Low Energy (BLE) is commonly integrated for direct connection to laptops, tablets, and smartphones, allowing easy switching between multiple devices.

5. Durable Mechanical Construction and Interface: While part of the housing, the PCBA is designed to interface with robust mechanical components. This includes stable sockets for the trackball's bearing supports (often ruby, ceramic, or steel), durable scroll wheel encoders, and high-quality tactile switches (like Omron switches) rated for tens of millions of clicks to ensure long-term reliability and consistent feel.

FAQ

​PCB & PCBA  Description​

PCB Assembly OEM Service

Electronic Components Material Purchasing

Bare PCB Fabrication

Cable, Wire-harness Assembly, Sheet Metal, Electrical Cabinet Assembly Service

PCB Assembly Service: SMT, BGA, DIP

PCBA test: AOI, In-Circuit Test (ICT), Functioal Test (FCT)

Conformal Coating Service

Prototyping and Mass Production

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PCBA ODM service

PCB Layout, PCBA Design According To Your Idea

PCBA Copy/Clone

Digital Circuit Design / Analog Circuit Design/ lRF Design /Embedded Software Design

Firmware and Microcode Programming Windows Application (GUI) Programming/Windows Device Driver (WDM) Programming

Embedded User Interface Design / lSystem Hardware Design

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