PCB Design for Mach-Zehnder Interferometer

I need a PCB file created for a project that integrates a Mach-Zehnder Interferometer with multiple sensors. # Project Title **Custom Arduino Due–Based Multi-Sensor Data Acquisition PCB with Integrated LCD Display** ## Project Overview I am looking for an experienced PCB/electronics designer to design a **custom standalone sensor device based on the Arduino Due platform**. The objective is to have all required sensors and supporting electronics integrated onto a single custom PCB. Once the Arduino Due firmware is uploaded, the assembled PCB should function as a standalone device: the sensors should continuously acquire data, the Arduino Due should process the readings, and the measured values/statuses should be displayed on an **LCD permanently mounted on the PCB**. I do not want the final product to depend on an external Arduino development board, breadboard, or loose jumper-wire connections during normal operation. ## Main Components / Sensors The PCB needs to support the following sensors/modules: * **BME680** – temperature, humidity, pressure and gas sensing * **BMA400** – 3-axis accelerometer * **VEML700** – UV sensor * **HX711 – 2 modules/channels** – load-cell/weight measurement * **KY-026** – flame sensor * **KY-016** – RGB LED module * **KY-006** – buzzer module * **Arduino Due** – primary microcontroller * **LCD display** – permanently mounted/integrated onto the PCB The exact electrical implementation of the KY-series components should be reviewed during schematic design. Where practical, I would prefer the underlying components/sensors to be integrated directly onto the PCB rather than mounting complete hobby-module PCBs. ## Desired Function The final PCB should operate as a complete embedded sensing device. The intended operating sequence is: **Power ON → Arduino Due starts → initializes all sensors → collects sensor data → processes data → displays readings/status on LCD → continuously updates measurements** For example, the LCD could display pages such as: **Environmental** * Temperature * Relative humidity * Atmospheric pressure * Gas/air-quality-related BME680 reading **Motion** * X-axis acceleration * Y-axis acceleration * Z-axis acceleration **UV** * UV sensor reading **Weight / Load** * Load Cell 1 * Load Cell 2 **Safety / Status** * Flame detected / no flame * Alarm status * RGB LED status The exact LCD interface and screen layout can be finalized during development. ## Arduino Due Integration The Arduino Due should act as the central controller for the entire PCB. I would like the PCB to be designed so that, after uploading the required Arduino program/firmware, the device operates independently without requiring a computer. The designer should provide: 1. Complete schematic 2. PCB layout 3. Component footprints 4. Gerber files 5. BOM (Bill of Materials) 6. Pick-and-place/assembly files if applicable 7. Arduino Due integration/programming interface 8. Basic firmware/test code demonstrating that every sensor communicates correctly 9. Documentation showing the pin assignments and communication interfaces The design should include an appropriate programming/debugging interface so that firmware can be uploaded or updated when required. ## Communication Interfaces The designer should determine and document the appropriate interfaces for each component, including where applicable: * I²C * SPI * UART * Digital GPIO * Analog inputs * HX711 communication The PCB should avoid unnecessary pin conflicts and should provide appropriate pull-up resistors, filtering, level compatibility, decoupling capacitors and other supporting circuitry required for reliable operation. ## Power Supply The PCB should have a proper regulated power architecture suitable for the Arduino Due and all integrated sensors/peripherals. The designer should calculate the expected current consumption and design appropriate: * Voltage regulation * Decoupling * Power filtering * Protection * Grounding * Power distribution The required external power input can be discussed before final schematic approval. ## LCD Display An LCD should be physically integrated into the PCB rather than being connected using loose wires during normal operation. The display should be large enough to clearly show sensor readings and device status. Ideally, the firmware should provide a simple interface such as multiple display pages/screens that can be switched automatically or using buttons. The exact LCD technology, size, resolution and interface can be proposed by the designer based on the Arduino Due and the number of values that need to be displayed. ## PCB Requirements The PCB should be designed as a professional, manufacturable board rather than a prototype breadboard-style circuit.

Requirements

include: * Proper component placement * Clear silkscreen labels * Ground planes where appropriate * Proper power routing * Decoupling near ICs/sensors * Separation of sensitive analogue signals from noisy digital/power sections where appropriate * Mounting holes * Clearly labelled connectors * Test points where useful * Accessible programming/debugging connector * Serviceability and reasonable component accessibility The designer should also consider the physical placement of sensors carefully. Sensors that measure environmental parameters should not be placed in locations where heat from voltage regulators, the microcontroller, LCD backlight, or other components could significantly affect measurements. ## Important Design Consideration I understand that some of the listed components are commonly available as inexpensive Arduino hobby modules. However, my objective is to create a **single integrated PCB/device**, not simply mount multiple existing breakout boards onto a larger PCB. Therefore, during schematic development, please determine which components should be implemented directly at the IC/sensor level and which, if any, should remain as modules. For example, the BME680 and BMA400 should preferably be implemented using their actu