Micro pump driver board and door-lock motor

Client project: project fee $9,000. Two related subsystems for one compact product. For a miniature water pump we designed the driver board: motor driver chip selection, the circuit, and conversion from full-duplex to half-duplex serial so the board fits the product's bus. For a door-lock gear motor we did the structural design, power-consumption and functional tests, and supported a small production batch, testing samples before delivery.

  • Client type: Client (not named)
  • Units: Small batch (count not published)
  • Project fee: $9,000
  • Stage: Client project, small batch delivered
Hand holding a lime-green plastic gear housing with a small DC motor and a metal gear inside
Door-lock gear motor, opened

Overview and tech stack

Project type
Small devices, DIY, consumer and education electronics
Pump driver
DC motor driver chip and supporting circuit
Interface
Full-duplex to half-duplex serial conversion
Motor
Motor selection and validation, power-consumption evaluation
Mechanism
Door-lock gear motor housing and structural design
Production
Small batch, with sample-level testing before delivery

What we built

  • Micro pump driver board circuit design
  • Full-duplex to half-duplex serial communication design
  • DC motor driver chip selection and circuit development
  • Motor selection, validation and power-consumption testing
  • Door-lock motor structural design and assembly review
  • Small-batch production support, functional and reliability checks

Project figures

Project fee
USD 9,000
Included
circuit design; structural work; testing and evaluation; small-batch production support

Figures from the client project itself; the client is not named. A quote for your build follows a review of your files.

Deliverables

  • Circuit design files and engineering documentation
  • Verified motor-selection recommendation
  • Structural design files for the door-lock motor assembly
  • Tested samples and small-batch production records

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  2. We review it and list the gaps and open questions.
  3. You get a written scope and quote.

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