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[Design Development Outsourcing and ODM Examples] Various Circuit Boards for Household Sewing Machines Control and Power Supply

A case of developing 10 types of circuit boards, including control boards, power supply boards, panel operation boards, and display boards.

We would like to introduce a case where we developed a control board for a household sewing machine. The customer did not have engineers strong in firmware development, circuit design, or board design, so they consulted us. They requested not only to meet the functional and reliability specifications but also to produce the board at a low cost. Based on our proposal, the main control board was designed to connect to a PC and function as a communication board that operates based on the operational data created on the PC. This communication is conducted via USB, and the specifications allow for communication with the LCD controller and function tester via RS-232C. [Our Proposal and Services] - By using our developed firmware without an operating system, data can be read without delay, achieving smooth operation. - The microcontroller used in the control board has fewer terminals and can control six stepping motors with a single microcontroller while switching control signals. - All components are implemented at our partner factory in Vietnam, inspected, and delivered locally. *For more details, please refer to the related links or feel free to contact us.

  • Circuit board design and manufacturing

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[Design Development Outsourcing/ODM Case] Motor Control Board for Key Systems

A case where development was carried out by fully utilizing our company's know-how in motor control.

We would like to introduce a case where we received a request for the development of a circuit board for a key system sold under the client's own brand from a residential equipment manufacturer. It was necessary to develop a circuit board that not only controls motors but also enables communication with other circuit boards via wired connections, and allows for the recording of locking and unlocking operation history, covering all of these specifications. This circuit board controls two motors. There was a concern about operational failures due to the long physical distance between the motors and the power supply, which could lead to voltage drops and reduced current. To mitigate voltage drop, we implemented low power consumption control. We utilized our expertise in motor control to ensure the reliable operation of both motors during development. [Our Proposals and Services] - Regarding the power supply, using a one-chip power board resulted in significant power noise, so we developed a custom power supply and implemented noise countermeasures. - For collaboration with other companies' circuit boards, we adopted RS485 and RS232C communication standards, and we also implemented noise countermeasures on our circuit board to achieve stable operation. *For more details, please refer to the related links or feel free to contact us.

  • Circuit board design and manufacturing

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[Design Development Outsourcing/ODM Case] Lithium-Ion Battery Control Board

A case where stable communication was achieved by optimizing the operating mode of the BLE module.

We would like to introduce a case where we developed a lithium-ion battery control board to be mounted in fan-equipped wearables. The fan operation of this wearable is controlled via a smartphone, which required us to design the interface and control to enable integration with the smartphone. Additionally, due to a short development period, it was necessary to bring the prototype to completion within a short lead time, and we were entrusted with this task because our company provides consistent support in both hardware and software design. For this product specification, there is a metal (cell) near the circuit board, which could cause issues with BLE communication, necessitating countermeasures. However, we achieved stable communication by optimizing the operating mode of the BLE module. [Our Proposals and Services] - The specifications have been changed to a 12V output, and the cell connection has been modified from 2 series and 2 parallel to 4 series, optimizing the output voltage control specifications. - The software specifications on the device allow for checking the battery level via a smartphone, and we designed the circuit and board to ensure that there is no discrepancy between the actual charging/discharging amounts and the battery level displayed on the smartphone. *For more details, please refer to the related links or feel free to contact us.

  • Circuit board design and manufacturing

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