LOOKING FOR A PCB & PROTOTYPE DEVELOPER FOR A SIMPLE WIFI BASED WALL CLOCK DEVELOPMENT E-LINK DISPLAY

@sayonesolutions

Thanks for posting this project. I have good experiance working with similar project and more specifically based on esp32 project. I can surely help you out in developing this project as per your requirements. feel free to contact for further discussion . Thanks, have a nice day.

@mahmoudralizadeh

Hello, I’m a Senior Electronics & Embedded Systems Engineer with a Master’s degree in Electrical/Electronics Engineering and over 8 years of hands-on experience in electronics design, embedded systems, and power electronics. I can help you take your project from concept and schematic design through PCB development, firmware, prototyping, debugging, and final optimization. My core expertise includes: • Schematic & PCB Design – from simple boards to complex multilayer PCBs, including component selection, layout, grounding, power distribution, and design for manufacturability • Embedded Systems & Firmware – STM32, ESP32, and other microcontroller platforms • Digital & FPGA Design – digital logic, FPGA implementation, and VHDL development • Power Electronics – DC-DC converters, DC-AC inverters, AC-DC rectifiers, power supplies, and control circuits • Hardware Debugging & Optimization – troubleshooting, signal integrity, EMI/EMC considerations, thermal issues, and performance optimization • Simulation & Validation – circuit simulation, prototype testing, measurements, and design verification You can also review my portfolio to see examples of my previous work and the level of engineering involved in my projects. I’d be glad to discuss your project and help turn the concept into a working, tested solution.

@shadabkhan92

As an established AI system builder with a keen interest in hardware, I firmly believe that my skill set and previous project experiences would be an enormous asset for the successful completion of your WiFi-enabled wall-clock. With a comprehensive understanding of ultra-low-power IoT systems, I can expertly design and develop a customized PCB that incorporates the low-power ESP32, E-Ink display driver, real-time clock, temperature sensor for precision weather control, and battery management circuit that your project demands. Firmware is another area where my proficiency will prove invaluable as I can meticulously craft sleeps routines, NTP sync, JSON weather parsing, OTA update hooks, and even create a minimal web page for easy SSID/password entries. I have worked extensively with PlatformIO/Arduino IDE with a promise to provide all the necessary files compile without warnings or errors. Notably, my dedication doesn't end at building functional prototypes but rather extend to delivering comprehensive documentation comprising Gerbers, BOM with orderable parts, firmware source code along with PIN codes which helps you reproduce the clock or readily hand it over to a manufacturer. Rapport-building is another one of my strengths; I'm ready to engage actively in conformity with your requirements at every stage of this project. Choose me for a journey which isn't just about making prototypes but building reliable production infrastructure.

@danish2051

I am an Embedded Systems and PCB Design Engineer with experience in Altium Designer, Kicad, Easyeda, Protious and custom hardware development. I can design your PCB from schematic to production-ready files, including: • Schematic Design • PCB Layout • Component Selection • Design Rule Check (DRC) • Gerber Generation • BOM Preparation • Manufacturing Support (JLCPCB, PCBWay, etc.) I have experience with ESP32, STM32, sensor interfaces, power supplies, RF modules, Ethernet, and industrial electronics. Please share the project requirements, schematic (if available), board dimensions, and any special requirements. I can start immediately. Looking forward to working with you.

@shivkantverma

Hi, Greetings! I am interested in working on your project. Please share the design details, specifications, and project requirements so we can discuss them further. I look forward to working with you. Thank you. Shivkant Verma

@mcollinscalz

Hi there, Your low-power E-Ink wall clock project aligns directly with my hardware engineering background in ultra-low-power IoT, custom PCB design, and E-Paper display integration. I recently designed an ESP32-S3 e-Paper dashboard utilizing a 7.5" Waveshare display with a hardware RTC, achieving sub-15µA deep-sleep current draw. Hardware & Firmware Strategy Low-Power PCB Architecture: ESP32-S2/S3 paired with an ultra-low-leakage hardware RTC (DS3231/PCF8563) to wake the system via interrupt, an integrated EPDC driver, onboard BME280 sensor, and a high-efficiency LiSoCl2/LiPo battery management system. Firmware Optimization: Built in PlatformIO using deep sleep, partial screen refreshes to eliminate ghosting, Wi-Fi Manager (AP mode captive portal for credentials), efficient JSON parsing (ArduinoJson), and clean NTP/weather API syncs to keep active awake times under 3 seconds (<1 mAh/update). Deliverables Hardware: Production-ready KiCad files (Schematics, Gerbers, CPL, BOM with active LCSC/Mouser part numbers) and assembled prototype board. Firmware & Docs: Modular PlatformIO C++ source code, flashed binary with OTA hooks, and a step-by-step manufacturing README. Timeline Week 1: Schematic, BOM selection, and power budget review. Week 2: PCB layout, routing, and fabrication order. Week 3–4: Assembly, firmware flashing, and low-power verification. I'm ready to review your preferred display model and get started!

@bojans9

Hello, I can develop your Wi-Fi E-Ink wall clock from schematic to working prototype, with the main focus on achieving the low-power target for 2+ years of battery operation. I can handle: * Low-power ESP32 PCB design and E-Ink interface * RTC, temperature sensor and battery management * Deep sleep, NTP, weather API and OTA firmware * Wi-Fi credential setup without reflashing * Prototype assembly and power-consumption testing * Gerbers, BOM, firmware and build documentation I will validate the actual hourly energy consumption on the prototype, including the <1 mAh/update target, rather than relying only on theoretical calculations. Timeline: 3-4 weeks Rate: INR 500/hour I can start with the schematic and power-budget design immediately. Best regards, Bojan

@hexabitzprojects

Hi, I can take this wall-clock project from **schematic through PCB, firmware and working prototype**, with battery life as a primary design target. I have **16 years of embedded/IoT R&D experience** with ESP32, custom PCB design, battery-powered devices, displays, sensors and Wi-Fi systems. I have completed compact ESP32 IoT and wearable products involving wireless communication, sensor acquisition, displays and power optimization. I can design the **low-power ESP32 hardware, E-Ink interface, RTC, temperature sensor and battery-management circuit**, followed by firmware for deep sleep, hourly wake-up, NTP, JSON weather API, OTA and a web-based Wi-Fi credential setup. ESP32 deep-sleep is specifically suited to periodic wake/measure/transmit applications. ([Espressif Systems][1]) I will measure the complete wake/update cycle and optimize the **MCU, regulators, E-Ink power switching and peripheral leakage** to work toward your <1 mAh/update target. Deliverables: **KiCad source, Gerbers, BOM with orderable alternatives, firmware source, PlatformIO/Arduino project, prototype assembly and build documentation**. Relevant experience: **battery-powered ESP32 IoT, wearable electronics, custom PCBs and sensor/display systems**. **Estimated timeline: 2–3 weeks** for schematic, PCB, prototype and initial firmware validation. Best regards, Subhash Suman Embedded | ESP32 | IoT | PCB | Low-Power

@rfandelectronics

As an RF & Electronics Engineer, I specialize in high-frequency systems, microwave engineering, and advanced electronic design. My experience aligns perfectly with the scope of your project, from designing custom PCBs with ultra-low power microcontrollers like ESP32, to creating deep sleep routines for battery optimization. The development journey you've outlined closely resonates with the kind of work I do; from-wise selection of controller to catering the specific needs of a weather data display on an E-ink based large panel. In addition to my strong theoretical background in RF and microwave engineering including proficiency in PlatformsIO/Arduino IDE, KiCad and Proteus for PCB Design I also bring practical implementation expertise. I have worked on numerous projects where energy efficiency was critical - like yours where we aim to have the clock run on a single battery pack for multiple years without any degradation in performance. Through my hands-on understanding of firmware programming and hardware assembly involved, I am certain that I can meet all your acceptance criteria – ensuring minimal power consumption per update, maintaining picture-perfect display quality even after long durations, providing flexibility to change Wi-Fi credentials without reprogramming and compiling files

@hamzaePCB

Before fixing the PCB architecture, I would first validate the two-year battery target with a realistic power budget. Hourly operation must account for ESP32 deep-sleep current, Wi-Fi wake/connection time, API/NTP traffic, E-Ink refresh energy, RTC/display standby current, and battery self-discharge. I would first confirm: • Exact 7–10" E-Ink panel and interface • Battery chemistry/capacity and available space • Whether weather needs hourly updates or can sync less frequently • Full vs partial refresh strategy to minimize ghosting • Operating temperature range I can handle the ESP32-based schematic and PCB, including low-power architecture, RTC, battery management, power-domain control, RF considerations, BOM, Gerbers and manufacturing files. I have worked on ESP32 embedded hardware and multilayer PCB designs. I would first calculate the expected energy per update and standby consumption before committing to the 2-year runtime target. Please share the E-Ink panel you plan to use and the available battery/enclosure dimensions, and I can review the architecture first.

@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

@kratika0510

Hello sir lets connect over chat I am from Kolkata and I specialize in PCB design and layout. With my tech-savvy team at Neuravolt Technology, we can definitely make your modern wall clock with Wi-Fi, E-Link display, and other functionalities a reality. My extensive experience of over 3 years includes delivering innovative solutions for various industries, which have required us to be meticulous when it comes to power management, low latency, and wireless communication. Apart from the specific skills you've mentioned, I would like to highlight our expertise in IoT and smart-device solutions as well. We not only develop hardware but also firmware that enables devices to operate seamlessly. This ensures that we can not only handle the custom PCB design for your clock but also deliver efficient firmware incorporating deep-sleep routines, NTP sync, JSON parsing, OTA update hooks, and more; all essential requisites for your project. Our collaborative approach will add value throughout the project lifecycle. I am committed to transparent communication, efficient project management, and on-time delivery. By choosing me and my team for your project, you gain a long-term technology partner in me who would be focused on satisfying your unique requirements while ensuring high code quality, security, diligent documentation and most importantly creating a scalable future ready digital solution for you. Let's work together to transform your amazing idea into an affordable reality.

@boopathiv1

Hi, I’m an Embedded Systems Engineer and KiCad PCB Designer with hands-on experience in ESP32, STM32, 8051, I²C, SPI, UART, schematic design and PCB development. I’m particularly interested in your ultra-low-power Wi-Fi E-Ink wall clock project. I have already developed an STM32-based server clock and an 8051-based digital clock, giving me practical experience with RTC/timekeeping, embedded firmware and display-based clock systems. I can handle the complete development: Low-power ESP32/MCU hardware and power architecture E-Ink, RTC and temperature sensor integration KiCad schematic and PCB layout Deep-sleep and battery optimization Wi-Fi, NTP and weather API/JSON integration Web-based Wi-Fi credential configuration OTA update support Prototype assembly and testing Gerbers, BOM, firmware source and documentation I would first perform a power-budget analysis around the <1 mAh/update and 2+ year battery target, then proceed with schematic, PCB, firmware and prototype validation. I can start immediately and provide a practical development plan based on the selected E-Ink panel and battery specification. Best regards, Sathishkumar N Embedded Systems Engineer | KiCad PCB Designer

@TanayAsh12

Hello, I’m an Embedded Systems & PCB Design Engineer with 8+ years of experience in hardware, firmware, PCB development, debugging, and prototype development. I can develop your Wi-Fi E-Ink wall clock from schematic to working prototype, including ESP32, E-Ink display, RTC, temperature sensor, Li-ion charging, battery management, deep-sleep optimization, NTP synchronization, weather API, Wi-Fi configuration, and OTA updates. I can also provide complete PCB design, BOM, Gerber files, firmware, assembly support, testing, and manufacturing documentation. My focus will be reliable operation and very low power consumption to achieve your required battery life. I’m ready to start.

@udbheda

Hi there, I am a custom hardware and firmware engineer based in India, and the founder of Bhavya Xontech Pvt. Ltd. Your ultra-low-power E-Ink clock project aligns perfectly with my core expertise in ESP32 hardware design, deep-sleep optimization, and API data parsing. Why I am a great fit: ESP32 & Low Power: I regularly design ESP32-based IoT hardware (smart home devices, automated sensor networks). I know how to achieve true <10µA sleep currents by using ultra-low quiescent LDOs, removing parasitic LEDs, and using an external RTC (like PCF8563) to strictly control the ESP32’s wake cycles. Firmware & APIs: I have experience parsing live weather and API data via JSON. I will write clean Arduino/PlatformIO code featuring captive portal (WiFiManager) for easy SSID setup without reflashing, and OTA updates. Prototyping: I have an in-house lab to assemble the PCB, integrate the 7-10" E-ink display, manage ghosting via proper refresh cycles, and test actual battery drain using a precise multimeter/oscilloscope. Timeline Estimate (To be discussed): Schematic & PCB Layout: ~10-15 Hours Firmware Development (Sleep, API, WiFi): ~15-20 Hours Prototyping & Bench Testing: ~10 Hours Note: The cost of the large E-Ink display and components should be funded upfront or billed separately. Let’s chat to finalize the architecture! Best regards, Uday Bheda Bhavya Xontech Pvt. Ltd.