PCB Design for Battery-Powered IR Thermometer (ESP8266 + MLX90614 + SPI LCD) — SMD, KiCad/EasyEDA

@amelectronics

Hi, I have experience in designing Circuits and can complete your project. I have expertise in the following: 1- Designing schematic and PCBA 2- Ordering the PCBA and getting boards manufactured. 3- Writing firmware for the PCBA to make sure everything works as expected. 4- I can also develop smartphone apps to communicate and control the hardware. If you wish we can discuss in chat. Thank you.

@tshibsamuel477

Hi there, I carefully reviewed your requirements and can convert your proven breadboard design into a compact, production-ready SMD PCB. I can work in KiCad and handle the complete process from schematic review and footprint verification through PCB layout, DRC, and manufacturing outputs. I have experience with ESP8266-based hardware, MLX90614/I2C sensors, SPI displays, Li-Po charging circuits, TP4056, MOSFET load switching, power management, and compact mixed SMD/through-hole PCB designs. I will also ensure the MLX90614 TO-46 footprint, LCD connector, battery interface, decoupling, and sensor power-reset circuitry are implemented correctly. You will receive the complete KiCad project, Gerbers, drill files, BOM with JLCPCB/LCSC-friendly parts, and pick-and-place files ready for assembly. Since your schematic/netlist and working prototype are already available, I can move quickly from validation to a manufacturable board. Just send me a message with the schematic, BOM, LCD part link, and mechanical constraints, and I can get started. Best regards, Samuel tshibangu

@Amidst

Hey there! I’m Alok, A PCB, Circuit and Mechanical designer with a passion for turning ideas into rock-solid, high-performance circuit boards. even expert on Python, C, C++ With nearly a decade of experience, I’ve tackled everything from compact consumer gadgets to complex industrial systems—always with a focus on precision, efficiency, and reliability. # Schematic & Layout Design – Clean, optimized, and manufacturable. # Component Selection & Library Management – No surprises, just the right parts for the job. # Reverse Engineering – PCB cloning, replication, and improvements. # Gerber, BOM & CPL Generation – Ready for seamless production. # DFM & DFA Expertise – Because great design means smooth manufacturing. # Multi-Layer, Flex, & High-Density PCB Design – Whatever the project needs. If you need a PCB and Code that’s efficient, reliable, and built for real-world performance, let’s chat. I’d love to help bring your project to life!

@hayteekeys

HI, KINDLY READ THROUGH MY PROPOSAL I will design a compact, manufacturable SMD PCB for your handheld IR thermometer based on your working schematic, ready for JLCPCB/PCBWay assembly. MY APPROACH ✅ Review and refine the schematic in KiCad or EasyEDA ✅ Select correct footprints (including MLX90614 TO-46 and Waveshare LCD connector) ✅ Route the board cleanly, run full DRC, and add suitable mounting holes ✅ Generate complete manufacturing files optimised for easy sourcing DELIVERABLES - Native schematic and PCB project files - Gerbers + drill files - BOM with SMD part numbers (JLCPCB/LCSC preferred) - Pick-and-place (centroid) file QUESTIONS 1. Preferred tool KiCad or EasyEDA? 2. Can you share the schematic/netlist, BOM and Waveshare LCD datasheet/link? Ready to start immediately.

@kkirandeep582

As an experienced Creative Designer, I bring more than just prototyping skills to the table; I bring a comprehensive understanding of hardware as well. My journey with design began years ago when I fell in love with the entire process of bringing ideas to life—not just the sketching and rendering but also the schematic analysis and layout considerations. With my proficiency in KiCad and EasyEDA, combined with exposure to working with similar portable electronics projects, I am confident that I will be able to enhance your current schematic design for a manufacturable SMD board for your IR thermometer. Understanding your need for "a compact PCB design," my expertise in selecting correct footprints and routing traces efficiently will prove invaluable. Having worked with various sensors, LCD modules, and power circuits, including MOSFET control, I am familiar with the complexities involved in integrating these components for efficient functioning. Furthermore, my proficiency in delivering comprehensive documentation such as Gerbers, BOMs and pick-and-place files ensures that I can provide you with all necessary outputs from the project while adhering to your specified vendors such as JLCPCB/LCSC.

@debosx

Hello! I'm a highly skilled PCB Designer with over 10 years of expertise in delivering reliable and efficient PCB designs. I specialize in creating precision designs tailored to client's needs, utilizing top-tier design tools such as Altium Designer, Autodesk Eagle, KiCad, EasyEDA, Siemens PADS, DipTrace, Allegro/OrCAD, Fritzing and Proteus. My goal is always to ensure the highest quality and performance in every project. Core Expertise : • Schematic Capture & Layout Design • Component Selection & Library Management • Reverse Engineering (PCB Replication, PCB Cloning) • Gerber, BOM, and CPL File Generation & Manufacturing Support • Design for Manufacturability (DFM) and Design for Assembly (DFA) • PCB Design & Development (Single, Double, Multi-Layer, Flexible PCBs) Industries Served : • Medical Devices • Telecommunications • Consumer Electronics • Industrial Equipment • Automotive Electronics • Safety and Security Devices Why Choose Me? • Attention to Detail and Commitment to Quality • Strong Communication Skills & Client-Centric Focus • Timely Delivery & Flexible Approach to Meet Project Requirements I would love to help you with your next PCB design project. Feel free to reach out, and let’s discuss how I can bring your ideas to life! Best Regards, Utpal

@shadabkhan92

In KiCAD have worked on the similar project. https://www.freelancer.com/projects/circuit-design/Raspberry-HAT-for-Transmission

@mahmoudralizadeh

I can take this from schematic refinement through to a manufacturable SMD PCB in KiCad. I’m comfortable with compact battery-powered boards, sensor power sequencing, and preparing clean fab outputs for JLCPCB/PCBWay. For this project I would focus on: reviewing and tightening the existing schematic/netlist selecting correct footprints, including the MLX90614 TO-46 package and the exact LCD connector compact routing with DRC-clean layout mounting holes and enclosure clearance delivering Gerbers, drill files, BOM, PnP, and native project files The P-MOSFET power switch on the sensor rail is a good choice for forcing a clean sensor is solid. If you share the schematic, BOM, and LCD datasheet/link, I can start by checking footprints and board constraints first, then move into layout.

@ahmedy607

Hello, I’ve read the project details, and this is exactly the type of compact ESP8266/IoT PCB work I handle. You can check my portfolio for similar projects. I can refine the schematic, select accurate footprints for the MLX90614 and LCD connector, complete the PCB layout, and prepare a JLCPCB/PCBWay-ready manufacturing package with Gerbers, BOM, pick-and-place, and native KiCad/EasyEDA files. I’ll also pay special attention to the Li-Po charging/protection, sensor power switching, I2C reliability, and compact enclosure-friendly placement. Best regards, Ahmed Yahia

@mohammadusman45

Hello I have already worked with similar type of projects as mentioned above. Initiate a chat to discuss further. Best Muhammad Usman

@Santoshchaulaga

Hello, I am Santosh Chaulagain, a professional Electrical Engineer and PCB Designer with over 7 years of experience in schematic design, PCB layout, and embedded systems, including ESP32, IoT devices, analog and digital circuits. I have successfully completed multiple projects for clients worldwide, delivering reliable and manufacturable designs. I have carefully reviewed your project requirements and I am confident that I can provide a high-quality solution tailored to your needs. My expertise includes PCB design using industry standards, component selection, BOM preparation, Gerber generation, and design optimization for cost and performance. I always ensure that my designs are fabrication-ready and tested for reliability. I focus on clear communication, timely delivery, and customer satisfaction. I am happy to discuss your project in detail and provide revisions until the final result meets your expectations. Looking forward to working with you. Best regards, Santosh C. Electrical Engineer | PCB Designer | ESP32 & IoT Specialist

@Webslinger01

Your schematic's already proven on the breadboard, so this job is about translation, not invention — taking that working netlist and turning it into a clean, manufacturable SMD board without introducing new problems. I've done exactly this kind of work before, including a custom ESP32-C3 air quality monitor where I integrated a laser particulate sensor and OLED display onto a single board, and an ESP32 model railway controller with servo drivers — both went from schematic to fabricated, working boards, so I know where the pitfalls hide when moving from through-hole to SMD. Here's what I bring to this: → The MLX90614 TO-46 can footprint is the trickiest part of this board, and I've handled similar oddball packages — I'll verify the exact footprint against the datasheet before routing, not after. → I've designed boards with the same ESP8266 + SPI LCD + Li-Po charging architecture pattern, including the P-MOSFET load switch on the sensor rail to handle that I2C lockup issue — that's a smart call on your part, and I'll make sure the reset timing works in the layout. → I'll work in KiCad, confirm the Waveshare LCD connector footprint against the part link you provide, and run DRC before generating Gerbers, BOM with LCSC part numbers, and pick-and-place files for JLCPCB.

@hexabitzprojects

Hi, I’m interested in designing your compact **handheld IR thermometer PCB** from the existing working schematic/netlist. I have **15+ years of experience** in embedded hardware, ESP8266/ESP32, sensor interfaces, power electronics and PCB design. I can work in **KiCad**, which I recommend for this project, and will refine the supplied schematic, verify footprints and produce a manufacturing-ready layout. I’ll specifically handle the **MLX90614 TO-46 footprint**, I2C pull-ups and decoupling, GPIO-controlled P-MOSFET sensor power reset, ESP8266, SPI LCD connector, Li-Po/JST-PH connection, TP4056 charging/protection and load switching. Deliverables will include: * Refined schematic * Complete PCB layout with mounting holes * Correct SMD/THT footprints * DRC verification * Gerbers + drill files * BOM with JLCPCB/LCSC-friendly parts * Pick-and-place/centroid file * Native editable KiCad project * Basic enclosure clearance review if dimensions are provided My previous work includes **ESP32/ESP8266 sensor devices, battery-powered IoT products, temperature/environmental monitoring systems, custom PCBs and embedded firmware/hardware integration**. I’ll focus on compact placement, clean power/ground routing, reliable I2C/SPI operation and easy prototype assembly through JLCPCB/PCBWay. **Best regards,** **Subhash Suman** Embedded Hardware | ESP32/ESP8266 | Sensors | KiCad | PCB Design **15+ Years Experience**

@studiomanju

Hi, I can design your handheld IR thermometer PCB in KiCad, starting from your existing working schematic/netlist and BOM. I’ll handle the complete PCB workflow, including: - Review and refine the existing schematic/netlist - Select correct SMD and through-hole footprints - Proper MLX90614 TO-46 footprint and sensor placement - Integrate the exact Waveshare 1.69" LCD connector from your datasheet/part link - ESP8266, I²C, SPI and power routing - P-MOSFET sensor power switching for reliable sensor reset - Li-Po + TP4056 charging/protection section - Compact 2-layer PCB layout suitable for a handheld enclosure - Mounting holes and basic mechanical clearance - ERC/DRC checks and manufacturing-rule verification - JLCPCB/LCSC-compatible BOM with part numbers - Gerber + drill files - Pick-and-place/centroid file - Complete native KiCad project files Since the breadboard prototype is already working, I can focus on converting the proven design into a clean, compact and manufacturable PCB rather than redesigning the electronics from scratch. Please send me the schematic/netlist, BOM, Waveshare LCD datasheet/part link, and approximate enclosure dimensions. I can then review everything and proceed with the PCB design. I’m ready to start.

@Hmdlawal

HI, KINDLY READ THROUGH MY PROPOSAL Your GPIO-controlled MOSFET reset on the MLX90614 rail tells me you've already run into I2C bus lockups on breadboard — smart to isolate that before layout instead of fighting it in the final board. I'm a PCB Design Engineer with 6 years designing compact SMD boards, including sensor + wireless MCU combos on 2-layer stacks. I'll rebuild your schematic, select correct footprints (TO-46 can, exact Waveshare FPC/header), route with care around I2C trace length and pull-up placement near the sensor, add mounting holes, and deliver Gerbers, BOM (LCSC/JLCPCB), CPL, and native project files. Quick questions: KiCad confirmed over EasyEDA? Any board outline/thickness limit from the enclosure? Status LED: GPIO-driven or always-on? PLEASE INITIATE A CHAT I look forward to collaborating with you on this project.

@anjalio22

I’d be glad to design your compact, manufacturable SMD PCB for the battery-powered IR thermometer. I have experience with KiCad/EasyEDA schematic refinement, PCB layout, ESP/MCU-based systems, I2C/SPI interfaces, Li-Po charging/protection, and production-ready documentation. I can review your existing schematic/netlist and BOM, verify the ESP8266, MLX90614 TO-46 footprint, Waveshare 1.69" LCD connector, JST-PH battery connection, TP4056 charge/protection circuit, P-MOSFET sensor power switching, pull-ups and decoupling. I’ll optimize component placement and routing for a compact handheld form factor while maintaining reliable power and signal integrity. I will run ERC/DRC checks and provide: • Native KiCad project files • Complete PCB layout and refined schematic • Manufacturing-ready Gerbers and drill files • BOM with JLCPCB/LCSC-preferred SMD part numbers • Pick-and-place/centroid file • Mounting holes and enclosure clearance considerations I can work in KiCad and ensure the final files are ready for fabrication and assembly through JLCPCB/PCBWay. Give me one opportunity to handle your project. I assure you of accurate, professional work and timely delivery.

@mengw3

I've spent 20+ years in electronics and PCB design, including compact battery-powered SMD boards around ESP8266, I2C sensors and Li-Po charging, so turning your working breadboard into a manufacturable board is squarely my kind of work. The schematic works on breadboard; the board is won on the layout details a netlist does not capture: clean power and the TP4056 charge path, the MLX90614 I2C routing kept quiet, the LCD SPI, and the P-MOSFET load switch, all in a compact, manufacturable footprint. What I'd do: - Take your schematic and netlist into a compact SMD layout: ESP8266, MLX90614, the Waveshare LCD, Li-Po and TP4056 charge and protection. - Careful power and ground: the charge path, the GPIO-controlled load switch on the sensor rail, and low-noise routing for the I2C sensor. - DFM-clean to your fab with correct footprints, Gerbers, BOM and pick-and-place. - A short note on placement trade-offs and any risks before you commit to fab. You get a manufacturable SMD board built from your schematic, laid out for a compact handheld with clean power and a working charge path, ready to order. One thing to confirm: what board outline and layer count are you targeting, and which fab so I match its DFM rules? I can start right away.

@MalikZainHaider

Hi, I can help you design Battery Powered IR thermometer ESP8266 based PCB in best budget and timeline. Looking forward for your response. Thanks

@shivanshj73

I am interested in working on your project and can deliver high-quality, accurate, and professional work according to your requirements. I understand the importance of completing the project on time while maintaining attention to detail and quality. I am ready to discuss your requirements, provide regular updates, and make revisions if needed. I would be happy to start immediately and ensure that the final result meets your expectations.