Attendance Device PCB and HMI Design

@amelectronics

I am a professional Electrical Engineer and PCB Designer with over 7 years of experience in schematic design, PCB layout, and embedded systems (ESP32, IoT, analog/digital circuits). I am also an experienced Embedded Systems Engineer with 7+ years in Arduino, ESP32/ESP8266, and microcontroller-based development. I turn ideas into fully functional hardware-software systems. I have carefully reviewed your project requirements and I am confident I can provide a high-quality solution tailored to your needs. My expertise includes: RFID (HF, UHF, NFC, Active/Passive) Embedded Firmware Development Hardware & PCB Design (industry standards) Sensor Integration & IoT Development Protocols: UART, I2C, SPI, MQTT, WiFi, BLE BOM, Gerber, Design Optimization Prototyping, Testing, Debugging, Power Optimization I focus on clear communication, timely delivery, and customer satisfaction. My designs are fabrication-ready, tested, and built for long-term reliability. I have designed similar products for other projects. I am happy to discuss your project in detail and provide revisions until you are satisfied. Looking forward to working with you.

@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-Rafi

@ahmedy607

Hi, Please take a look at my profile and portfolio. I have worked on similar STM32-based embedded systems and integrated projects. I can handle the complete schematic and PCB design, generate all manufacturing files, and support prototype . I can also assist with DWIN HMI page design and communication setup to ensure smooth operation with the STM32 firmware. Best regards, Ahmed

@Webslinger01

I've been building embedded systems for over a decade, and I can tell you exactly what this attendance device needs to work right the first time. I've done this specific combination of STM32 firmware, custom PCB design, and HMI integration across multiple production projects — including a full prototype I shipped to a client in South Africa that ran entirely offline with zero connectivity. I handle the complete stack myself, from the schematic and PCB layout straight through to the 3D enclosure modeling and firmware, so there's no gap between what's designed and what gets built. If you want a device that's engineered properly from day one rather than iterated through three revisions, I'm the right fit for this.

@anjalin0309

Hello, I am a Hardware Design Engineer with experience in STM32-based hardware design, PCB layout, peripheral integration, and embedded system bring-up. I can assist with the complete development of your attendance device, from schematic capture and PCB design through prototype testing and hardware/firmware integration support. The combination of STM32F103, DWIN HMI, fingerprint sensor, Ethernet, RTC, microSD, power management, and expansion headers is well within my design experience. I can create a robust, production-ready PCB with proper power distribution, signal integrity, Ethernet routing considerations, ESD protection, and manufacturing-friendly layout practices. I am comfortable collaborating during firmware development to resolve hardware/software integration issues and support board bring-up until the major functions are fully operational. While my primary expertise is hardware and embedded systems, I can also work with DWIN communication requirements and coordinate the interface design process. Deliverables: • Schematic and PCB design files • Gerbers, Pick & Place, and assembly drawings • BOM documentation • Prototype support and design reviews • Integration assistance during testing I use KiCad for schematic and PCB design and maintain clear communication throughout the project to ensure a successful prototype and smooth transition to manufacturing. Best regards, Anjali

@ElecHamza

Hi, I can design your attendance device PCB and develop the DWIN HMI interface to ensure a seamless integration with your STM32 firmware. I am highly proficient in hardware design for the STM32F103 microcontrollers, routing high-speed lines for Ethernet, SD cards, and protecting sensitive fingerprint sensor lines. I will create a robust power regulation stage and a custom DWIN screen UI layout matching your exact workflow requirements. You will receive production-ready Gerber, BOM, and Pick & Place files alongside the complete DWIN project files. I am fully available for collaborative troubleshooting, board bring-up, and firmware testing until your prototypes are fully operational. Best regards,

@sandipm1307

With a rich background in Automation Engineering and extensive knowledge of Electrical Engineering and Embedded Systems, I believe I am the perfect candidate for this PCB Designer position. I have successfully executed numerous projects involving STM32-based systems and possess excellent skills in STM32 firmware implementation. My experience with DWIN HMI design perfectly aligns with the tasks outlined in this project. In fact, I have developed numerous HMI designs in DWIN for various industrial applications. Working primarily with Altium, KiCad, and EasyEDA PCB design software, I am very comfortable delivering high-quality Gerber files and assembly drawings that translate into successful device production. Moreover, my hands-on expertise in system integration will prove to be invaluable as we navigate through hardware/software integration issues during firmware development and testing. It's important to understand that your project is not just another job for me. I assure you that my commitment levels extend beyond design completion. Adhering to my principle of providing clean and reliable solutions, I pledge to support the board bring-up process until all major functions are operational. My availability for post-design support is another asset you can leverage as we work towards building an efficient attendance device. Let's collaborate, automate processes, maximize efficiency, and deliver a product that will exceed expectations!

@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), delivering reliable, industrial-grade Electronic Solutions—from concept to mass production, all under one roof. Our in-house capabilities include R&D, Firmware Development (C & Python Programming), Hardware Design, Prototyping, and Scalable Mass Production with a focus on quality and cost efficiency. Core Expertise: • Microcontroller : PIC, STM32, ESP Family, AVR, Nuvoton, XBee. • Microprocessors: Raspberry Pi • Development Tools: MPLAB X IDE, Keil, STM32CubeIDE, Arduino IDE, Atmel Studio, VS Code. • Hardware Design: Industrial-grade multilayer PCBs using Altium Designer, KiCad, with efficient power design, isolation handling, and EMI/EMC compliance. • Communication Protocols: UART, SPI, I²C, CAN, Modbus, MQTT, LAN, S-Bus, RS-485, RS-232. • RF Modules: LoRa, nRF Series, XBee, Laird RF Modules. Project Capabilities: Power Monitoring & Energy Management Units, CNC Controllers, BLDC/DC Motor Control, IoT-based Agriculture, Smart Home & Industrial Automation, Inverters, Stabilizers, and Gimbal-based Videography Control Systems. We have already transformed the concept into a successful Electronic solution for multiple clients. To help you better visualise our expertise, we would be glad to share a brief reference video. Let’s schedule a meeting to discuss further. Best Regards, Team OSTronik India

@antoniod83

I am interested in contributing to the development of the proposed attendance device. Based on the provided requirements, I offer a structured approach covering schematic design, PCB layout and routing, DWIN HMI development, and support throughout prototype validation and hardware-software integration. The scope includes the integration of the STM32F103 (Blue Pill), 7-inch DWIN HMI, fingerprint sensor, Ethernet interface, RTC, MicroSD card reader, power regulation circuitry, voltage divider circuits, and GPIO expansion headers. Manufacturing-ready files, including Gerbers, Pick-and-Place files, assembly drawings, and complete documentation, will be provided. In addition, I will develop and configure the DWIN interface and collaborate during firmware development and testing to ensure reliable communication and seamless integration between the STM32 firmware and the HMI system. A collaborative approach will be maintained throughout prototyping and board bring-up to address potential hardware and software integration challenges and to ensure that the major functionalities of the system are successfully achieved. I remain available to discuss the project requirements, schedule, and post-design support.

@onep80

Hello as per requirement will do this in mention days and in 600 rs SKILLS • Operating Systems: - Windows, Linux • Networking Protocols: - TCP/IP, DNS, DHCP etc. • Security Tools: - Arcon PAM, Wireshark, Nmap, Metasploit, Burp suite • Understanding of Firewall, VPN, IDS/IPS, VAPT, Cyber Attacks, OWASP • Ticketing Tool: - Hand-on experience on Service now • Hands-on Experience in Security Incidents handling and analysing events and raw logs for possible Incidents. • Understanding of Routing & switching / Network protocol, Network Securities.