Development and Assembly of a Compact Electronic Prototype

Hello,

I am looking for an electronics engineer or prototyping company to develop, assemble, program, and test a compact, battery-powered electronic system.

The objective is to manufacture one fully functional prototype, using commercially available electronic modules wherever possible to minimize development costs.

1. Project Requirements

The system must include:

* An ultrasonic mist generator with its compatible driver.
* A miniature blower to generate controlled airflow.
* A rechargeable lithium battery.
* USB-C charging.
* Battery protection against overcharging, over-discharging, overcurrent, and short circuits.
* Appropriate voltage regulation and power management.
* A microcontroller to manage the operating sequence.
* All necessary electronic switching, wiring, connectors, and supporting components.
* An ON/OFF switch and an activation button.
* Appropriate electrical and thermal protection.

The system must operate autonomously on battery power.

2. Dimensions

The complete assembly should be designed to fit within an indicative maximum envelope of:

150 × 65 × 45 mm (length × width × height).

Components may be distributed within this volume rather than assembled into a single enclosure.

Compactness is a priority. Please indicate the expected dimensions of the proposed assembly.

3. Operating Sequence

The controller must perform the following sequence:

1. Activate the blower.
2. Activate the ultrasonic mist generator.
3. Stop the ultrasonic mist generator after a configurable period.
4. Continue operating the blower briefly.
5. Stop the blower.
6. Repeat the sequence according to the selected settings.

Operating durations must be adjustable through firmware.

4. Scope of Work

The supplier will be responsible for:

* Reviewing the electrical architecture and identifying any missing components.
* Selecting suitable electronic components and modules.
* Assembling and soldering the complete electrical system.
* Programming the microcontroller.
* Integrating the rechargeable battery and USB-C charging circuit.
* Testing the electrical system and its protection functions.
* Verifying simultaneous operation of the blower and ultrasonic generator.

The development of reservoirs, fluid circuits, tubing, and mechanical integration is excluded from this request.

A custom PCB is not required for this initial prototype. Commercial modules may be used.

5. Expected Deliverables

* One assembled, programmed, and tested electronic prototype.
* Battery and charging system.
* Complete electrical wiring and connectors.
* Electrical schematic or detailed wiring diagram.
* Bill of materials with component references.
* Firmware source code.
* Basic operating instructions.
* Test results and a video demonstration before shipment.

6. Request for Quotation

Please provide:

* Your total price, including components, assembly, programming, and testing.
* Estimated development and manufacturing lead time.
* Shipping costs to France.
* Expected dimensions of the completed assembly.
* Any exclusions or technical limitations.
* Confirmation that you accept single-unit prototype orders.

If the initial prototype is successful, a second development phase may involve further miniaturization and a custom PCB.

Please let me know whether this project is within your capabilities.

Best regards,

Mathis Etievent