USB-C Upgrade for Omnikey 3021

@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

@jakubf41

Hi there, This is a clean and very feasible hardware mod—I’ve done similar USB interface conversions and compact integrations on embedded devices. Approach: The HID Omnikey 3021 is a USB 2.0 full-speed device, so the conversion to USB-C is straightforward if done correctly: • Remove USB-A connector and expose D+, D−, VBUS, GND • Add a USB-C receptacle (device/UFP mode) • Implement correct CC pull-down resistors (5.1kΩ Rd on CC1/CC2) to ensure proper host detection • Route D+/D− with controlled length and minimal stubs to preserve signal integrity • Ensure mechanical reinforcement so the connector is robust without a cable No active PD controller is needed since this is a low-power USB 2.0 device. Deliverables: • Wiring/schematic diagram • Parts list (USB-C connector + passives) • Step-by-step mod guide • Photos or annotated references Timeline: 2–3 days after receiving the unit Location: If UK shipping is required, I can coordinate or guide a local implementation if needed Key focus will be reliability, compactness, and full USB compliance so it behaves exactly like the original—just in USB-C form. Happy to proceed once we confirm logistics. Best regards

@durgesh8527

With over a decade of experience in full stack development and a strong background in C programming, I am well-equipped to handle your unique conversion project. My expertise spans beyond web and mobile app development to include areas such as APIs, integrations, and backend systems--skillsets that are directly relevant to the task at hand. I have successfully completed numerous hardware modification projects in the past, ensuring adherence to specifications along with thorough documentation for reproducibility and future servicing. My versatile proficiency matches the breadth of your requirements perfectly. From following USB-C wiring spec’s pin-out guidelines meticulously to ensuring current-handling compliance, my well-rounded skillset guarantees your Omnikey 3021 smart-card reader will function flawlessly after the mod job. Moreover, I further ensure the device powers up and transmits smart-card data across all standard USB-C hosts without any errors.

@tetianam8

⭐⭐⭐⭐⭐ I’ve read this closely—this isn’t just a connector swap, it’s a proper USB-C device conversion, and I’m comfortable doing it cleanly and reliably. I’ve handled similar USB-A → USB-C mods where the goal is “plug-and-work” on any host. For your reader, I’d keep the USB 2.0 interface intact (D+/D−), add correct CC pull-downs for UFP mode, and integrate a compact USB-C receptacle or plug directly onto the PCB while maintaining shielding and mechanical stability. Approach: • Open unit, assess PCB pads and space • Remove USB-A lead/connector • Add USB-C (with proper CC resistors, VBUS routing) • Reinforce mechanically (epoxy/bracket if needed) • Test on multiple USB-C hosts for enumeration + stability Milestones: Teardown + fitment plan Wiring + connector integration Functional testing (power + data) Documentation (wiring map + parts + notes) Quick question: do you prefer a flush USB-C male plug or a recessed female port? Happy to proceed.

@adily1

Hey , I just finished reading the job description and I see you are looking for someone experienced in Microcontroller, Circuit Design, C Programming, Electronics, Electrical Engineering, PCB Design and Layout, Embedded Systems and Prototyping. This is something I can do. Please review my profile to confirm that I have great experience working with these tech stacks. While I have few questions: 1. These are all the requirements? If not, Please share more detailed requirements. 2. Do you currently have anything done for the job or it has to be done from scratch? 3. What is the timeline to get this done? Why Choose Me? 1. I have done more than 250 major projects. 2. I have not received a single bad feedback since the last 5-6 years. 3. You will find 5 star feedback on the last 100+ major projects which shows my clients are happy with my work. Timings: 9am - 9pm Eastern Time (I work as a full time freelancer) I will share with you my recent work in the private chat due to privacy concerns! Please start the chat to discuss it further. Regards, Adil.

@alirashdi26

Hey , I just finished reading the job description and I see you are looking for someone experienced in Electrical Engineering, Embedded Systems, Circuit Design, PCB Design and Layout, Microcontroller, C Programming, Electronics and Prototyping. This is something I can do. Please review my profile to confirm that I have great experience working with these tech stacks. While I have few questions: 1. These are all the requirements? If not, Please share more detailed requirements. 2. Do you currently have anything done for the job or it has to be done from scratch? 3. What is the timeline to get this done? Why Choose Me? Deliver high-quality work with a strong focus on accuracy, efficiency, and client objectives. Maintain a proven record of long-term client satisfaction with consistently positive feedback. Earn 5-star ratings on recent projects, reflecting reliability and clear communication. Work with a structured, detail-oriented approach to ensure timely and accurate delivery. Availability: Full-time freelancer with flexible availability and fast response times (Eastern Time). I will share with you my recent work in the private chat due to privacy concerns! Please start the chat to discuss it further. Regards, Ali

@davidm0908

Hi, I can modify your HID Omnikey 3021 Smart Card Reader to use a direct USB-C connector while preserving full USB 2.0 data integrity and proper bus-power compliance, ensuring it enumerates reliably on any USB-C host. My approach would involve carefully replacing the USB-A cable termination with a correctly wired USB-C male connector (including proper CC resistors and power/data line mapping) and validating stable smart-card communication under load. I can also provide a clear wiring diagram and documentation of the modification, with an estimated turnaround of 2–4 days depending on shipping and parts availability. Thanks.

@RavenDetector

Hi there, I’ve read your brief and I can convert an HID Omnikey 3021 so it directly uses a USB‑C plug (no cable) while retaining full‑speed HID smart‑card communication and bus power. I’ll remove the existing USB‑A tail, implement a USB‑C receptacle wiring with proper CC resistor configuration, VBUS and GND routing, and preserve the D+/D− full‑speed traces with good impedance and strain relief so the reader enumerates reliably. I have hands‑on experience modifying USB2.0 devices, routing clean full‑speed signals, and documenting wiring and test procedures. Deliverables will include a clear wiring schematic/map, a parts list (connector, resistors, any ferrites), and short step‑by‑step notes so the mod can be reproduced or serviced. Next step: confirm whether you’ll ship a unit to me or prefer I buy one and I’ll provide a short pre‑work checklist and start the mod. Do you want the modified reader to be purely bus‑powered at USB2.0 current levels, or should I design for higher current draw (USB‑C Rd/CC configuration or PD) to support any future add‑ons? Best regards, Everett

@cindyviorinar

Hello, I’ve read your brief carefully. I’ve converted USB-A smart-card readers to USB-C before and can deliver a neat, cable-free Omnikey 3021 mod that powers and enumerates as a UFP (device) at full-speed with robust wiring and clear documentation. My approach is to open the reader, remove the existing USB-A pigtail, install a compact USB‑C connector or plug-breakout, wire VBUS, D+/D- and GND directly, and implement proper CC pull-down resistors (Rd) on CC1 and CC2 so the host recognises the reader as a device. I’ll follow the USB‑C spec for pin mapping and current handling, ensure EMI-friendly routing and strain relief, and test with multiple hosts to confirm reliable smart-card data transfer and power draw. Deliverables: the modified reader, a wiring schematic/wiring map, parts list and short step-by-step notes so the mod can be reproduced or serviced. I’m UK-based and can work from your shipped unit or procure the reader for you. Typical turnaround for prototyping, testing and documentation is 3-5 days. Do you prefer a male USB-C plug or a compact panel-style receptacle for the device end, and will you ship the reader to me or should I purchase one for you? Best regards, Cindy Viorina

@ttobio69

Hi there, I have read your requirements carefully, and I understand you need an HID Omnikey 3021 physically modified from USB-A to a compact USB-C direct connector, with full bus power + reliable smart-card data communication and clear documentation so the mod can be repeated later. I'm a new freelancer, but I have rich experience in this field. My approach would be to: -remove the existing USB-A cable/connector cleanly -fit a compact USB-C connector solution with correct USB 2.0 data + power wiring -make sure the device enumerates properly on standard USB-C hosts -keep the final form factor as small as possible -test power-up, card detection, and data communication -provide a simple wiring map / notes / parts list for future servicing or reproduction I understand this is not just a cosmetic connector swap — the USB-C side must be wired correctly so the reader stays stable and fully functional. I would focus on a neat hardware conversion, proper mechanical fit, and reliable testing before handoff. Estimated turnaround: 1–3 days after receiving the device Estimated price: £20 + shipping If you want, I can work from a device you ship to me, or I can source the reader first and handle the full conversion. I would be genuinely happy to work with you on this project. Best regards, Oluwatobi Okedairo

@oleksiir2

Hi, there. This is a straightforward but detail-sensitive USB hardware modification, and I can handle it cleanly. The OMNIKEY 3021 is a USB 2.0 full-speed device, so the conversion is mainly about correctly adapting the interface to USB-C while keeping enumeration and power behavior unchanged. My approach: - Remove the USB-A connector and expose the D+, D−, VBUS, and GND lines - Integrate a USB-C male plug directly on the PCB (no cable) - Add correct CC pull-down resistors (Rd) to ensure proper host detection - Maintain controlled routing for D+/D− to preserve signal integrity - Ensure stable 5V bus power and proper grounding - Keep the form factor compact and mechanically robust Result: - Plug-and-play on any USB-C host - Reliable power + data (same behavior as original USB-A) - Clean, minimal, durable physical design Deliverables: - Modified working device - Wiring diagram / schematic - Parts list + short documentation for replication I can also source the unit if preferred. I’ll ensure the final result is compact, reliable, and compliant with USB-C basics. You can check my previous projects on my profile portfolio. Let me know how you’d like to proceed.

@iAmiteshKr

Secure Hardware Expert | PKCS#11, HSM & Smart Card Integration I am a senior developer and hardware specialist with extensive experience in secure device integration, specifically dealing with PKCS#11 devices, HSMs, and smart card readers. I am well-equipped to handle the USB-C upgrade for your Omnikey device while ensuring full compatibility with existing security architectures. Why I am the right fit for this upgrade: Security & Compliance: I have a deep background in PCI DSS standards and have worked extensively with credit card readers and high-security hardware. Cryptographic Expertise: I am proficient with libcryptoki, X.509 certificates, CA management, and Vaultwarden, ensuring that the data path between the reader and the host remains secure. Protocol Mastery: I have advanced knowledge of TLS, mTLS, and DTLS for secure communication, as well as the low-level protocols required for smart card interaction. System Automation: I utilize Nushell for writing multi-threaded automation and testing scripts, which allows for rapid validation of the hardware upgrade across different environments. Language Proficiency: Expert in C, Rust, and Go—the primary languages for low-level hardware interfacing and cryptographic libraries. I can ensure that the transition to USB-C does not compromise the reader's performance or its ability to interface with secure PKI environments. commercial in EURO acceptable.