Compact Optical Sensing Module PCBs Design

@mairajali11

I've always been drawn to projects that demand efficiency and precision, which is why your compact optical sensing module design is incredibly intriguing to me. Drawing on my eight years of experience as an Electrical/Electronics Engineer and PCB Designer, I have developed a set of skills tailored specifically for this task. I'm proficient with Eagle, Altium, KiCAD, and EasyEDA which will be crucial for creating those high-density board layouts you require. What truly sets me apart for this project is my extensive knowledge of LED driver circuits and Raspberry Pi Pico. I understand the necessity for a constant current design in the LED PCB in order to maximize performance and longevity. My experience with microcontroller interfacing will ensure seamless integration and compatibility with your chosen board, providing a stable foundation for your control mechanism. My commitment to delivering exceptional service is further confirmed by my Preferred Freelancer status, placing me in the top 1% of freelancers. This has been achieved through a track record of consistently meeting deadlines while surpassing client expectations. As a result, I'm confident that I can deliver not just what you need—a compact, high-quality module—but also provide additional insights that will enhance your project's overall efficacy. Let's work together to bring your compact optical sensing module vision to life.

@hayteekeys

Hi, I can design and deliver the two-board SFH7018B optical module: a ≤10 mm circular LED head PCB plus a Pico‑controlled constant‑current driver PCB, fully assembled and tested. APPROACH LED PCB (Optical Head, ≤10 mm): - Circular layout with accurate LED placement for sensor alignment. - Proper thermal pad/via strategy and copper pour for heat spreading. - No logic—just robust pads/connector for external drive. Driver PCB (Pico Interface): - Independent constant‑current channels for each SFH7018B wavelength. - PWM dimming support and stable current regulation with filtering/protection. - Control via Pico GPIO/PWM and/or I²C (we’ll choose simplest that meets performance). - Connector/cable interface to LED head (compact, keyed, strain‑relief friendly). Build & Test: - Fabrication + assembly of both boards. - Functional test with a Pico: channel control, current verification, basic thermal sanity check. DELIVERABLES - Assembled ≤10 mm LED PCB + assembled LED driver PCB. - Schematic, PCB files, Gerbers, BOM (MPNs), and assembly notes. - Test notes showing channel currents and control method compatibility with Raspberry Pi Pico. QUESTIONS TO START 1) Target LED currents per channel ? 2) Supply rail available on the driver board ? 3) Preferred interconnect between boards ? 4) Any mechanical drawings for the optical stack-up?

@hancho6319

As an seasoned Embedded Systems Engineer with over five years of experience, my skillset is a compelling match for your Compact Optical Sensing Module PCBs project. I'm proficient in PCB design tools like KiCad and Proteus, ensuring the compact high-density layouts required for this endeavor. Drawing from my Electrical & Electronics Engineering background, what sets me apart is my deep comprehension of electronic circuits, digital systems, communications, and power principles. I understand how to optimize these areas to achieve the level of precision and efficiency you need in the context of sensor integration. Moreover, my robust understanding of Raspberry Pi Pico and its seamless integration with microcontrollers makes me uniquely placed to fulfill your requirements. Having worked extensively on C, Arduino, ESP32, STM32 and other microcontroller platforms enables me to confidently handle your task at hand from schematic design to PCB fabrication while ensuring compatibility with existing systems. Additionally, my knowledge of utilizing Pico GPIO / PWM / I²C for control will presumably facilitate smooth system operation

@pluto04

I can help with the circuit design and verification of parameters, although the description is too vague. The price i set here is reflected on my experience and the fact that i can also write a datasheet type pdf regarding technical details regarding the project. I do require more details so i can set a proper price and a real time estimate for delivery of the pcb files, datasheet and simulation data (if required, for extra charge).

@Jenil01

Your project requires high-density, precision PCB design for an optical sensing module, where mechanical alignment, thermal management, and stable LED driving are critical. This is exactly the type of multidisciplinary challenge I handle as a Mechatronics Engineer with strong experience in electronics, PCB layout, and embedded systems. Please review my portfolio: ? https://www.freelancer.in/u/Jenil01 I have hands on experience designing compact PCBs, sensor interfaces, and current-controlled LED circuits, along with deep familiarity working with Raspberry Pi Pico, Arduino, and embedded platforms. My background includes developing robotics and sensing systems where precision placement, clean power delivery, and noise control were essential for reliable measurements. For the SFH7018B LED PCB, I will design a ≤10 mm circular board with correct thermal pad connectivity, copper balancing, and alignment aware layout for close optical coupling. The driver PCB will feature independent constant current channels, PWM compatible dimming, and robust filtering and protection, interfacing cleanly with Pico GPIO/PWM/I²C as finalized. I will handle the complete workflow schematics, layout, component selection, PCB fabrication, assembly, and delivery of tested, working hardware. The interconnection between boards will be optimized for reliability and minimal footprint. Best regards, Jenil Dodiya (Mechatronics Engineer)