PCB & Custom Water Block Design Ree Cooll

@markoa7

Your 50x30x20 mm waterblock and 22x12 mm LED matrix area align with a recent multi-PCB LED driver project I delivered. I recently designed a 2-PCB relay-driven module handling 900 mA total, achieving a 15% reduction in junction temperature. - Schematic with relay switching, noise filtering, and LED protection. - PCB layout optimized for 900 mA continuous current and 3D STEP export (portfolio: https://www.freelancer.com/u/markoa7). - Gerber, Drill files, BOM, and a fully populated 3D STEP model. Clarifying question: What is the precise thermal target (C/W) for the 22x12 mm LED matrix region, and do you require CFD-backed validation of the microchannel cooling path and gasket integrity before production? Happy to hop on a quick call to discuss Marko Aleksic

@tshibsamuel477

Hi there, I carefully reviewed your high-power UV LED module project, including the relay-controlled 300 mA / 900 mA operating modes, compact PCB geometry, thermal interface to the 22 × 12 mm LED area, and the requirement to replicate and optimize the 50 × 30 × 20 mm liquid-cooling waterblock. I am a mechatronics engineer with almost half a decade of experience in PCB design, embedded electronics, power circuitry, CAD, hardware prototyping, and reverse engineering. My background is particularly relevant here because the project requires both electrical design and close mechanical/thermal integration between the PCB and CNC-machined cooling block. I can approach the schematic, PCB layout, manufacturing files, populated STEP model, and mechanical waterblock design as one integrated system, with attention to current handling, component clearances, thermal contact, sealing, and manufacturability. This combined skillset should allow the project to move efficiently without separating the electrical and mechanical work between multiple engineers. Please send me a message so we can discuss the project and start. Best regards, Samuel tshibangu

@yaroslavmark

Hi, I have experience designing compact power and mixed-signal PCBs with relay switching, protected 12–48 V domains, thermal management, and manufacturing packages for boards below 70 mm. I have completed designs with 10+ protected channels, high-current copper, BOM/MPN control, STEP integration, and DFM checks for JLCPCB-class fabrication. Approach ✅ I will reverse-engineer the LED/driver topology and design the relay, filtering, protection, and current paths so the 300 mA and 900 mA operating modes behave exactly as specified. ✅ I will lay out the compact PCB with optimized copper width, thermal spreading, LED heat-transfer area, creepage/clearance, and a populated STEP model for mechanical verification. ✅ I will coordinate the 50 × 30 × 20 mm waterblock interface, defining the 22 × 12 mm thermal contact zone, mounting pattern, O-ring sealing area, and cooling-channel constraints. Questions ✅ Can you provide clear photos, dimensions, LED part numbers, and the existing waterblock/PCB assembly for accurate reverse engineering? ✅ In 900 mA mode, how must current be divided between the large and small LEDs, and are their exact forward-voltage/current ratings available? Best, Yaroslav

@hayat38402

I am Muhammad Javed, a professional PCB designer and Firmware developer with expertise in embedded systems, electronics prototyping, PCB layout, circuit design, and circuit simulation. I use the following tools for designing • Altium Designer | Proteus • KiCAD | Eagle CAD | EasyEDA • Multisim | LabVIEW • PSpice | LTspice • TinkerCAD As a Design Engineer, I've rich background in following: • Analog and digital circuit design • Embedded C/C++ Programming. • VHDL | Verilog, Quartus | Vivado • Microcontrollers like Arduino, Raspberry Pi, FPGA, AVR, PIC, STM32 and ESP32. • IDEs like Keil MDK V5, ATmel studio and MPLab XC8. • Communication protocols like SPI, I2C, I2S, CAN, RS232, RS485, etc. My PCB design covers the following substances:  Single Sheet to Multi sheet Schematics  Single/double-sided and multi-layer PCBs layouts  Power Supply (SMPS & LDOs)  RF & High-speed layouts  Typical data and control interfaces: UART, USB, SPI, I2C, SDIO etc.  EMC/EMI emission control techniques I will provide you complete PCB design with  Schematics diagram  Gerber files  Take and Place  Bill of materials  Components selection  Assembly layout  3D Design

@shykhAbubakar

Hi, I am ready to assist with the reverse engineering and replication of your liquid-cooled high-power LED UV module, covering the smart relay-based PCB with noise filtering, 900mA current handling, 3D STEP model of the board, and the custom 50x30x20mm waterblock with internal microchannels, O-ring sealing, and CNC-ready manufacturing files, following IPC-2221, IPC-7351, ISO 2768, and ASME Y14.5 standards for a thermally efficient, mechanically accurate, and manufacturing-ready design. Project Deliverables: Schematic diagram PCB layout PCB project source files Bill of Materials Gerber and Drill files 3D STEP model of the board STEP/IGES files for CNC machining 2D technical drawings (PDF/DXF) I have a few questions: Q1: Could you share the reference photos, existing waterblock dimensions, and the LED module mounting interface details? Q2: Do you have any preference for relay type, filter stage topology, or gasket sealing method? Over 8 years of experience in PCB design, 3D mechanical modelling, and reverse engineering for high-power LED and thermal systems. Similar projects I have done: High-Power LED UV Module PCB Design with Relay Switching Noise Filtering and 3D STEP Model Custom Waterblock Design with Internal Microchannels O-Ring Sealing and CNC-Ready Manufacturing Files Software I can use: Altium Designer/KiCad SolidWorks/AutoCAD I am ready to start immediately. Thank you! Warm regards, Abubakar

@kashiffaiz3

Hello, With my experience spanning over 5 years as a 3D modeler, adept at harnessing the full potential of software like Blender, Zbrush, and Solidworks, I confidently assure you that I possess the expertise required to meticulously reproduce an exact match of the water cooling block, reflective of all the necessary dimensions and design parameters such as hydraulic connections and mounting points. Additionally, I will employ my mastery of incorporating sealing gaskets and O-rings to guarantee flawless water tightness, ensuring the complete protection of your electronics against leaks. My proficiency extends beyond just meticulous modeling, but delves deeply into unique optimization for 3D printing. This implies that not only will I deliver stunning 3D models for your water block in file formats such as STEP/IGES for CNC machining but also thorough and detailed technical drawings in PDF/DXF file formats featuring accurate dimensions and manufacturing tolerances crucial for successful realization. Lastly, by opting to hire me for this project not only are you contracting a skilled professional with unwavering competence in their craft but also someone who perceives themselves as your true partner throughout this entire experience. My dedication to understanding and materializing my client's vision is unyielding and this assures you unfailing commitment to bring to life your utopian LED UV Module Engineering & Custom Waterblock Replication project. Thanks!

@ahmedy607

Hi, I’ve carefully read the project details and understand the required switching logic between the 300mA and 900mA constant-current LED drivers. I can handle the PCB/electronics phase, including the schematic, relay switching and filtering stage, LED protection, current-path design, and PCB layout with appropriate trace widths for continuous currents up to 900mA. I’ll also provide the native PCB source files, manufacturing-ready Gerbers and drill files, BOM with sourcing information, and the populated 3D STEP model for mechanical clearance checks. I understand that in low-power mode only the Small LED should operate, while in high-power mode both LED matrices must operate safely from the 900mA driver. I have experience with power electronics, LED/driver circuits, and manufacturing-ready PCB design. You can check my portfolio for relevant PCB projects. Best regards, Ahmed

@bojans9

Hello, I can handle the electronics/PCB engineering portion of this high-power UV LED module, including the relay switching, filtering, LED protection and manufacturing-ready PCB files. I have 10+ years of PCB and embedded systems experience with circuit design, ESP32/STM32, C, electronics, power handling and hardware documentation. I can develop the schematic around the two specified constant-current drivers, implement the required relay logic, verify current paths and protection, size PCB traces appropriately for the 900mA operating condition, and perform ERC/DRC checks. Deliverables can include the editable PCB project, schematic, BOM with sourcing information, Gerber/drill files and PCB 3D STEP model. For the waterblock, I can work from the finalized PCB STEP geometry and supplied dimensions, but I would not claim specialized microchannel/thermal-fluid expertise without reviewing the existing block, cooling requirements and manufacturing constraints first. $120 fixed, 3-5 days for the electronics phase.

@DesmondTwoTwo

Hi, I'm Stefan. This caught my attention mainly because the blend of high-power LED technology and custom cooling solutions is a fascinating challenge. I've designed PCBs and mechanical systems for advanced electronics, so I'm well-equipped to tackle the complexities of your project. Here's how I'd approach it: ▸ First, I'd thoroughly analyze the existing LED module to ensure all critical specs are captured for accurate replication. ▸ I'd focus on optimizing the PCB layout to handle the 900mA while ensuring proper relay switching and noise filtering. ▸ I'd also prioritize the internal cooling channels in the waterblock design to maximize heat transfer efficiency, which can easily be overlooked. I genuinely enjoy diving deep into projects and treating the outcome like it's my own creation. A good idea doesn't get far sitting in a project description, so reach out and let's talk it through. Regards, Stefan.

@miguelcen64

I can take this on and deliver the PCB and waterblock as a coordinated engineering package. The circuit will be laid out around the two constant-current LED drivers, relay switching, and filtering so the small LED is isolated in low-power mode while the full array is enabled in high-power mode. I’ll also prepare the board for thermal and mechanical fit, with clean PCB Layout, Circuit Design, and Electrical Engineering considerations for the 3D Printing interface and clearance to the waterblock. For the mechanical side, I’ll align the 3D model to the exact 50 x 30 x 20 mm envelope and ensure the cooling block sits flat over the 22 x 12 mm heat zone while preserving mounting and sealing constraints. I’ll provide manufacturing-ready files and coordinate the board STEP so the assembly can be checked before fabrication. If helpful, I can start by validating the relay topology and thermal interface assumptions first: Should the relay switch the driver outputs directly, or is a dedicated low-voltage control stage already available? Best regards, Miguel

@rfandelectronics

As an experienced RF and Electronics Engineer, specializing in areas such as PCB design, circuit simulation, and microwave engineering, I bring a unique blend of skills perfectly aligned for your project. Through the development cycle, from schematic to hardware implementation to system integration, I'm confident in leveraging my skills in 3D Modelling, Circuit Design, Electronic and Mechanical Engineering for tackling your project head-on. Understanding that effective reverse-engineering and replication requires a keen eye for detail and expertise in analyzing complex systems, my proficiency in using software like KiCad , Proteus, Altium designer would ensure precise recreation of the **Printed Circuit Board (PCB)** and **Water Cooling Block** designed through critical standoff dimensions and hydraulic connections. The resultant PCB layout will be intelligently optimized based on my understanding of handling high continuous currents while features like cooling liquid channels/microchannels designed in the Waterblock will maximize heat transfer ensuring perfect thermal fit. Moreover, working with projects that demand attention to perform at high frequencies and deliver optimal solutions has acquainted me with designing relay-based switching logic for various outputs. Your requirement for LED-mode based switching using a relay can thus be addressed

@alfatrade2

A 50 x 30 x 20 mm block leaves very little room for internal channels, and the flow path decides whether the LEDs stay cool. Copying the outer geometry alone won't tell us that, so I'd want the original's flow rate and LED wattage. I've drawn tooling parts and assembly drawings and worked with aluminium structures in production, so the 3D model is familiar ground. Do you have the physical block to measure, or only photos and this spec?

@KZHAI

Hi! I’d be happy to help with this project. I can handle the PCB schematic/layout, relay switching and filtering, LED protection, Gerbers, BOM, and 3D STEP model, while also designing the waterblock around the exact LED heat area and PCB clearances. I’ll pay close attention to the 900mA current path, thermal contact, sealing/O-ring design, microchannel placement, and manufacturing tolerances. You’ll receive clean, manufacturing-ready files including PCB sources, Gerbers/Drill, BOM, STEP/IGES, and detailed PDF/DXF drawings. I’d be glad to review your existing photos, dimensions, and component details and work through the design carefully with you.

@hamzaePCB

Before routing the PCB, I would first resolve one critical point in the operating logic: how the 900 mA constant-current driver is intended to supply both LED sections in High-Power mode. Simply connecting two LED loads in parallel does not guarantee controlled current sharing, so I would need the exact LED matrix configuration, forward-voltage range and rated current for both the large and small LED sections before defining the relay/protection topology. I would also confirm: • Are the HG-RZ12W300-NF and HG-RZ36W900-NF outputs isolated/floating? • Exact electrical specifications and series/parallel arrangement of both LED matrices? • Required PCB dimensions and mounting-hole locations? • Is the relay mechanically or electronically controlled, and what is the control voltage? • Is the 22 × 12 mm LED thermal area required to have a direct thermal interface to the waterblock? I can handle the electronics/PCB phase: schematic, protection/filtering, current-path review, PCB layout, trace sizing, BOM, Gerber/drill files and PCB STEP export. I am not proposing the CNC waterblock/mechanical phase, so that portion can be handled separately by a mechanical/thermal designer. Once the LED datasheets and existing reference photos/dimensions are available, I can first validate the electrical architecture before starting the PCB.

@petkov2

Hi,Ivan. I can help with the PCB and custom waterblock design for your high-power UV LED module. I can handle the relay switching logic, current filtering/protection, PCB layout, and the mechanical waterblock model with proper cooling channels and mounting details. I can provide the schematic, PCB source files, Gerbers/Drill files, BOM, 3D STEP model, and the final waterblock STEP/IGES plus 2D manufacturing drawings. Could you provide the existing PCB/photos and waterblock reference images or measurements? Also, do you already have the exact LED specifications and relay part selected? Estimated timeline: 7–10 days Estimated budget: $250–$400 depending on the available reference data. Best regards,Petko.

@aydont

YOU ONLY NEED ONE DEVELOPER WHO GETS IT RIGHT THE FIRST TIME. HERE'S WHY I'M THAT DEVELOPER. I recently helped a client transform their idea into a reliable, high-performance electronic system that was both efficient and scalable. I'd love to do the same for you and deliver something built to perform from day one. We will create a custom PCB and water block design tailored to your specific requirements, ensuring optimal thermal management and seamless integration. I understand the need for a clean, professional, user-friendly design with exact replication and optimization at the forefront. With expertise in PCB design and mechanical modeling, we have 75+ 5-star reviews on similar projects and rank in the top 1% among 75 million users. I'd love to chat about your project! The worst that can happen is you walk away with a free consultation. Regards, Aydon.

@briang033

Me interesa este desafío calculo que es fácil ya que se mucho y lo puedo hacer bastante rápido soy bueno en estos trabajos

@ostronik

Hi, Greetings from OSTronik India! We are a technology-driven company specializing in Power Electronics and Embedded System Design integrated with Artificial Intelligence (AI) and Mobile Application Development, delivering reliable, industrial-grade electronic and software solutions—from concept to mass production, all under one roof. Our in-house capabilities include R&D, Firmware Development, Hardware Design, Mobile Application(Android & iOS), Prototyping, and Scalable Mass Production, with a strong focus on quality, performance, and cost efficiency. Core Expertise: • Microcontrollers: PIC, STM32, ESP Family, AVR. • Microprocessors: Raspberry Pi • Development Tools: MPLAB X IDE, STM32CubeIDE, Arduino IDE, Atmel Studio, VS Code • Hardware Design: Industrial-grade multilayer PCBs using Altium Designer with optimized power design, isolation handling, and EMI/EMC compliance • Communication Protocols: UART, SPI, I²C, CAN, Modbus, MQTT, LAN, S-Bus, RS-485 Mobile Application Capabilities: • Custom Android & iOS mobile applications for device control, monitoring, and data visualization • Real-time dashboards, cloud connectivity, and secure user authentication • Seamless integration between IoT platforms and mobile apps We have successfully transformed multiple concepts into market-ready electronic and mobile-enabled solutions. We would be glad to share a brief reference video. Let’s schedule a meeting to discuss your requirements in detail. Best Regards, Team OSTronik India

@HerdinandRyan

Hello, your project needs an electronics engineer and a mechanical designer, and I can cover both, which keeps the PCB STEP model and the waterblock in one consistent CAD loop. For the electronics I would design the relay switching so that Mode 1 feeds the 300 mA driver only to the small LED and Mode 2 feeds the 900 mA driver to both arrays, and I would check how the current divides between the two arrays in Mode 2 and add balancing where needed so that neither LED is overdriven. The schematic would include input filtering and reverse polarity and transient protection, and the traces would be sized for continuous 900 mA. You would receive the PCB source files, Gerber and drill files, a BOM with sourcing codes and a populated 3D STEP model of the board. For the mechanics I would model the 50 by 30 by 20 mm block in Autodesk Inventor with channels concentrated over the 22 by 12 mm LED matrix, an O-ring groove for sealing and the mounting holes at your 35.5 mm spacing, then deliver STEP and IGES files with dimensioned drawings and tolerances. During my internship I designed a drive circuit, wrote its firmware and produced the 2D and 3D drawings of the rig, and my work is at herdinand.github.io. Best regards, Herdinand