Switch Sensor PCB Design + full build

@MuhammadUzair16

Hi I am an embedded systems engineer with over 12 years of experience. I have extensive experience with ultra-low-power BLE sensor products, compact PCB design, rechargeable battery/solar power paths, charger/protection circuits, and the small firmware needed to make the hardware useful in the real world. I understand this is a complete implemented solution, not only a PCB layout. I can design the schematic and PCB around readily available parts, keep standby current as the main design target, and provide Gerbers, BOM with alternates, assembly notes, test steps, and simple BLE firmware to advertise occupied/vacant state for verification. I can also support prototype bring-up and refinements toward a consumer-grade product if you plan to move beyond the first build. A few details will help lock the design quickly: exact switch model, available board envelope, battery/solar panel size, expected BLE range, and how often you want health-check broadcasts. Once those are confirmed I can move fast with part selection and layout. Please contact me to discuss details.

@amelectronics

Hi, This is a project I can help you with. I have experience designing low-power BLE devices and compact PCB layouts for battery-powered applications. For your design, I would use a low-power BLE MCU, efficient solar charging and power-path management, battery protection circuitry, and optimized firmware to achieve ultra-low standby current. The device will remain in deep sleep, wake on switch-state changes or scheduled broadcasts, transmit the updated status, and return to sleep immediately. I can deliver: • Complete schematic (KiCad/Altium) • Compact PCB layout & Gerbers • Detailed BOM with in-stock alternatives • BLE test firmware for occupied/vacant status • Assembly notes and test procedure • Power consumption optimization and validation I can start immediately and will prioritize readily available components to keep development moving quickly. Once you share the mechanical constraints, battery details, and switch specifications, I can begin right away. Looking forward to discussing the project. Best regards

@mairajali11

With your complex Switch Sensor PCB project, you need an expert who can deliver high-quality circuit boards that meet your specific requirements and precise mechanical constraints. As an Electrical/Electronics Engineer with over 8 years of experience, I have successfully designed numerous compact, power-efficient PCBs incorporating sophisticated designs like yours. I am proficient in Eagle, Altium and KiCad among others, allowing me to create accurate schematics and optimized layouts in compliance with your preferred software. To ensure the longevity of your device and optimize its performance, I am skilled in smart power-path control and energy harvesting such as incorporating efficient battery charging and protection circuitry and high-efficiency buck/boost stages. Moreover, my past work extensively involved designing for low standby current to preserve power. Being a Preferred Freelancer ranked among the top 1%, my track record of successfully delivering intricate projects on time showcases my ability to meet your desired timeline without compromising quality. In addition to having hands-on familiarity with BLE, microcontrollers, signal processing, Circuit Designing, embedded systems and more, I am well-versed in research and technical writing which ensures clear assembly notes and a concise test procedure. Let's build a compact, ultra-low-power PCB system that exceeds your needs today!

@engrusmanfaiz

Hello, This project aligns well with my experience in ultra-low-power IoT hardware, BLE firmware development, energy harvesting, and battery-powered embedded systems. I understand that you need a complete working solution, not just a PCB design, including hardware architecture, firmware, power management, testing, and manufacturing-ready deliverables. My proposed approach is to use a low-power BLE SoC such as the nRF52 series, combined with a solar-aware battery charging and power-path management circuit optimized for extremely low sleep current. The firmware will operate in an event-driven manner, waking only on switch-state changes or scheduled status broadcasts, then returning to deep sleep to maximize battery life. The design will include schematic capture, PCB layout, component selection based on current availability, BLE firmware for occupied/vacant reporting, power-consumption validation, assembly documentation, and a test procedure covering current draw, charging behavior, wake-up events, and BLE range verification. I have experience developing low-power wireless sensor nodes, BLE-based monitoring devices, battery-powered IoT products, and solar-assisted embedded systems. Once you provide the switch details, solar panel specifications, battery capacity target, and mechanical constraints, I can finalize the architecture and begin immediately.

@tshibsamuel477

Hi there, I’ve carefully read your project description, and I can help design the compact ultra-low-power BLE PCB with switch-state detection, rechargeable battery support, solar charging, power-path control, and reference firmware. I’m Samuel Tshibangu, a mechatronics engineer with strong experience in low-power embedded hardware, BLE devices, battery/solar-powered circuits, PCB design, sensor/switch inputs, and prototype firmware. I can select available components, optimize sleep current, design the schematic and PCB, and provide simple BLE firmware that reports occupied/vacant status reliably. I can deliver the PCB files, Gerbers, BOM with alternatives, assembly notes, and a current-draw/range test procedure. Best regards, Samuel Tshibangu

@hayteekeys

HI, KINDLY READ THROUGH MY PROPOSAL I will deliver a compact, ultra-low-power PCB for your slot-mounted switch monitor featuring BLE reporting, smart solar + battery power path with energy harvesting, deep-sleep operation, and instant state updates (occupied/vacant) upon switch change. MY APPROACH
 ✅ Phase 1: Select low-power MCU with integrated BLE (e.g. nRF52), design efficient buck/boost + solar charging circuit, schematic, and ultra-low standby power architecture.
 ✅ Phase 2: Optimize compact PCB layout, debounce logic, firmware for event-driven advertising + periodic health checks, full verification of current draw and wireless performance. RELEVANT PROJECTS • Ultra-low-power BLE solar-powered occupancy sensor with slot switch input (nRF52, energy harvesting, <10µA sleep, delivered on time) DELIVERABLES • Complete schematic (KiCad) • Optimized PCB layout + Gerber files • Detailed BOM with in-stock primaries & alternates • Simple reference firmware for BLE status advertising • Assembly notes and test procedure (current draw + range) QUESTIONS 1 Can you share the mechanical constraints, exact switch model, and target dimensions now? 2 Any minimum battery life or solar panel specs? 3 When would you like the Phase 1 schematic review? Ready to start immediately.

@leonidye

Hi, I am an experienced electronics and embedded systems engineer with strong background in low-power BLE devices, compact PCB design, battery-powered sensor nodes, and energy-harvesting circuits. I can deliver a complete implemented solution for your switch sensor, including schematic, optimized PCB layout, Gerbers, BOM with alternate parts, reference BLE firmware, assembly notes, and a current-draw/range test procedure. My design approach will focus on ultra-low standby current, reliable wake-on-switch-change operation, clean input debouncing, safe rechargeable battery/solar power-path control, and good BLE antenna layout for stable wireless performance. I can use KiCad, Altium, or Eagle depending on your preference and will choose readily available components suitable for quick prototyping and future assembly. For firmware, I will provide a simple test application that advertises occupied/vacant status over BLE, supports health-check broadcasting, and returns the MCU to deep sleep after each event. I am available to start quickly once you provide the mechanical constraints, switch model, preferred battery type, and approximate solar panel size. Regards.

@hamzazayyad

Hello, I can design the complete hardware package for your ultra-low-power BLE occupancy sensor, from schematic through production-ready PCB and test firmware. With 15+ years of experience in STM32, low-power embedded systems, wireless products, and PCB design, I can develop a compact solution optimized for battery + solar operation, focusing on ultra-low standby current, reliable BLE communication, and manufacturability. My approach: • BLE SoC selection (nRF52, STM32WB, or equivalent low-power device) • Solar energy harvesting and battery charging/protection design • High-efficiency power-path management • Hardware switch debouncing and wake-on-change detection • Deep-sleep firmware with periodic health broadcasts • Compact PCB layout optimized for size and assembly • Component selection using readily available, in-stock parts Deliverables: • Professional schematic (KiCad, Altium, or Eagle) • Optimized PCB layout and Gerber files • Complete BOM with alternates • BLE reference firmware ("occupied/vacant" advertising) • Assembly documentation and test procedure • Current-consumption verification and wireless-range validation I have extensive experience developing low-power embedded products, industrial electronics, sensor interfaces, battery-powered systems, and production-ready PCBs. I look forward to discussing your project. Best regards, Hamza Electrical & Embedded Systems Engineer

@mzdesmag

Hello sir, Did go through your job description and glad to share that I have enormous experience in working with Switch Sensor PCB Design I'm a seasoned programmer and Engineer with quality experience in Flutter, React, Node.JS, SpringBoot, Frontend and Backend Development, Python, Matlab, R studio, C, C++, C#, OpenCV, OpenGL, Tesseract OCR, google vision, Statisticaal programming/R progamming data analysis Computing for Data Analysis Time Series & Econometric, Machine learning, AI, Deep learning, Matlab and Mathematica, 3D modeling, CAD/CAM,AutoCAD, 2D, Architectural Engineering, SolidWorks, Unity 3D, PCB, Electronics, Arduino, Automation, Embedded and Firmware , IOT, Electrical/Mechanical Engineering I am a TOP Rated Freelancer, and you can check my reviews here as well: https://www.freelancer.com/u/mzdesmag. Looking forward to potentially working together on this project. Thanks and Best regards, Adekunle.

@tetianam8

⭐⭐⭐⭐⭐ Your project is a great fit for my background in ultra-low-power BLE and battery-powered IoT hardware. The key challenge here is not the BLE communication itself, but achieving extremely low sleep current while managing solar charging, battery protection, and reliable wake-up on switch events. My approach would be to use a low-power BLE SoC (Nordic nRF52 series or similar), interrupt-driven wake-up from the slot switch, and an energy-efficient power architecture that supports both rechargeable battery operation and solar harvesting. The device would remain in deep sleep, wake only on state changes or scheduled health broadcasts, transmit the status, and immediately return to sleep. Deliverables • Complete schematic (KiCad/Altium/Eagle) • Compact PCB layout and production-ready Gerbers • BOM with primary and alternate in-stock components • BLE reference firmware ("occupied/vacant" advertising) • Assembly, test, and current-consumption verification notes Design Focus • Ultra-low standby current • Solar charging and battery protection • Reliable BLE range and antenna layout • Debounced switch input and event-driven operation • Compact, assembly-friendly PCB A few questions: • What battery chemistry and capacity are preferred? • What are the available solar panel specifications? • What maximum PCB dimensions must be respected? I can start immediately and design the system around readily available components to keep prototyping and production moving quickly.

@abdurRafiqM

HI, I am an experienced electronics and PCB Design engineer, specialised in use of ECAD software such as Altium Designer, KICAD, EasyEDA, etc. for the the design of electronics and PCB. I will design your projects to meet your Requirements and the industry standard. I do all kinds of circuits such as Power delivery circuit, Sensor Integrated Circuits, wireless control, MCUs etc. I will deliver the following. The Schematics for your Design The PCB for the design Bill of materials(If needed) Gerber, Pick and Place and other manufacturing and assembly drawings needed. Full Support and consultancy till the project is done. Kindly send me message for my previous designs and also so we can discuss further on your project I look Forward to working with you. Best Regards, Abdur-Rafiq

@engrfarooq04

As a mechatronics engineer with extensive experience in electrical engineering and electronics, I'm well-equipped to tackle your switch sensor PCB design project.I have read your requirements that you are looking for schematics in KIcad and want the pcb layouts for this one. As a mechatronics engineer, I can also help you in making the Bill of material and will help you in finding the stocks and will also do the testing . I Regards sparktech

@sakshis576

Hi, As an experienced and versatile embedded systems expert, I'm confident I can deliver top-notch results for your project. My skills in circuit design, electronics, and particularly PCB layout uniquely position me to build your requested compact, ultra-low-power PCB board. Prioritizing power efficiency and energy harvesting, I'm well versed in designing efficient power pathways using a combination of rechargeable battery and small solar panel. Best regards, Sakshi masih

@mahmoudralizadeh

I will design a compact, ultra-low-power PCB that reads a slot-mounted switch and instantly reports “Occupied” or “Vacant” status over Bluetooth Low Energy. The design will feature an energy-efficient microcontroller with integrated BLE (nRF52840 or similar), high-efficiency buck/boost converter, Li-ion battery charging with solar harvesting (MPPT), and smart power-path management. The firmware will keep the device in deep sleep with extremely low standby current (<10µA), waking only on switch state change or periodic health-check broadcasts. All components will be readily available for fast production. Two quick questions: 1. What is the exact model of the slot-mounted switch you will use? 2. What is your target maximum PCB size (e.g., 30x30mm or smaller)? I’m a specialist in ultra-low-power IoT and energy-harvesting designs with extensive experience in BLE sensor nodes, solar-powered devices, and battery-optimized embedded systems. I have delivered many similar compact, long-life wireless sensors for industrial and commercial applications. I will deliver complete professional KiCad files (schematic + optimized PCB layout + 3D view), full BOM with alternates, ready Gerber files, well-commented firmware, assembly notes, and a detailed test procedure. Additionally, I commit to **1 full month** of free support after delivery for any refinements or optimizations. Ready to build a clean, efficient, and highly reliable solar-powered BLE sensor for you. Let’s move fast and make it happen!

@chetanc20

I am a Senior Hardware Design Engineer with 5+ years of experience in low-power IoT, BLE devices, battery-powered systems, and PCB design. I can develop the complete schematic, compact PCB layout, power management circuitry, BLE firmware, and manufacturing files for your solar-powered occupancy sensor. I work with Altium Designer 20.0.13 and can deliver an optimized, production-ready design with ultra-low standby current and readily available components. Looking forward to working with you.

@Webslinger01

I’ve read your brief for the switch sensor PCB, and this is exactly the kind of work I do. With over ten years of experience building custom hardware and firmware, I’ve shipped everything from BLE wearables to industrial controllers. I recently completed a custom ESP32-C3 air quality monitor PCB from concept to working units in under three weeks, handling the full stack myself. I can take your sensor from idea to a fabricated, tested prototype without any handoffs. Let’s get it built.

@ssumitkumar7800

Hello there! It would be an honor for me to take on this PCB design project. With my extensive experience in Electronics and Embedded Systems, I'm certain that I can design the compact, ultra-low-power PCB you require for reading slot-mounted switches and reporting their state via Bluetooth. My skills in Microcontrollers and Signal Processing will come in handy when integrating the Bluetooth Low Energy component and the debounced input line for the switches. Additionally, I have a solid background in energy harvesting techniques and power management, which are crucial for your project's success.

@anjalin0309

Hello, I’m an experienced Hardware Design Engineer with hands-on expertise in ultra-low-power embedded systems, BLE devices, battery-powered products, and PCB design using KiCad. Your project aligns well with my background in low-power electronics, power management, and wireless embedded development. I can design a compact PCB featuring a BLE-enabled MCU, solar-powered battery charging and protection circuitry, efficient power-path management, and optimized switch input conditioning. Special attention will be given to minimizing sleep current, maximizing battery life, and ensuring reliable wake-up on switch-state changes. Component selection will prioritize availability, cost, and long-term sourcing. Deliverables will include: • Complete schematic and PCB design • Production-ready Gerber and manufacturing files • Detailed BOM with alternate in-stock components • Reference BLE firmware advertising occupied/vacant status • Assembly guidelines and test procedures for power consumption and BLE performance My experience with embedded firmware, power electronics, and PCB layout allows me to handle both hardware and firmware aspects efficiently. I maintain clear communication and can move quickly to meet your timeline while incorporating any mechanical constraints or switch specifications you provide. I look forward to discussing the project and helping bring it to production.

@alluankit01

Hi, I can help deliver the complete implemented solution for your compact ultra-low-power BLE switch sensor board, including schematic, PCB layout, power-path/solar charging design, BOM, and reference firmware. The best solution is to design the board around a low-power BLE MCU, efficient battery/solar charging and protection stage, buck/boost regulation, clean debounced switch input, wake-on-change behavior, and scheduled health-check BLE advertising. I’ll focus on minimum footprint, low standby current, reliable wireless range, readily available components, and easy assembly/testing. I’m comfortable with BLE embedded systems, ultra-low-power PCB design, battery-powered electronics, solar charging/power-path circuits, buck/boost regulators, switch sensing, deep sleep firmware, KiCad/Altium/Eagle PCB layout, BOM preparation, Gerber generation, and prototype test procedures. Deliverables will include: * Complete schematic * Compact PCB layout * Gerber/manufacturing files * Detailed BOM with alternate in-stock parts * Reference firmware advertising occupied/vacant status over BLE * Assembly notes * Test procedure for current draw, wake behavior, and BLE range I can start once you share the mechanical constraints, exact switch model, battery/solar panel details, and required board size target. Best regards Ankit