
Open
Posted
•
Ends in 19 hours
Paid on delivery
I want a working proof-of-concept clock that does much more than tell the time. The device will be built on custom hardware, drive an OLED display, and continuously mine Bitcoin, Ethereum and Litecoin in the background. Two screen modes are required: • Clock mode – shows a clean, legible digital time display. • Crypto mode – fetches the current Bitcoin price via a live API and reveals a QR code linked to my Cash App wallet. Access to the QR code must be gated by a fingerprint reader. During initial setup I’ll enrol my print; later, when I touch the sensor, the device instantly switches to Crypto mode and shows the code. A button-press (or another touch) returns to Clock mode. Core expectations – Design the full electronics stack: mining chips or modules, Wi-Fi, fingerprint sensor, power regulation and OLED driver. – Write all low-level firmware: continuous mining for BTC, ETH, LTC; secure fingerprint matching; REST call for price feed; on-screen graphics and mode switching. – Provide STL or CAD for a compact desktop enclosure with proper thermals. – Supply complete build docs: schematics, BOM, flashed binaries, and step-by-step assembly instructions so I can reproduce the prototype locally. Acceptance criteria 1. Device powers up, auto-connects to Wi-Fi and starts mining. 2. Time display updates accurately every second. 3. Fingerprint unlock shows live Bitcoin price and correct Cash App QR code within two seconds. 4. Mining hash rates and temperatures are logged and viewable over SSH. If you have prior experience marrying embedded mining rigs with small displays or secure peripherals, your insight will be invaluable. I’m ready to iterate quickly—once the prototype proves stable we can discuss a production run.
Project ID: 40466437
26 proposals
Open for bidding
Remote project
Active 5 days ago
Set your budget and timeframe
Get paid for your work
Outline your proposal
It's free to sign up and bid on jobs
26 freelancers are bidding on average $518 USD for this job

I am excited about the opportunity to work on the Crypto-Mining Smart Clock Prototype project. With my expertise in C programming, electronics, microcontrollers, software architecture, and experience in integrating mining rigs with small displays and secure peripherals, I am confident in delivering a high-quality working proof-of-concept clock. I will design the full electronics stack, write low-level firmware for continuous mining and secure fingerprint matching, provide a compact desktop enclosure design with proper thermals, and supply comprehensive build documentation. I am committed to meeting all core expectations and acceptance criteria outlined in the project brief. Thank you for considering my proposal. See the above links please. Please go through my profile its 15 years old see the work I did over the years. ---> No Win No Fee means that your satisfaction is my utmost priority. <---- Lets discuss the job details. Moreover, I am willing to start the job and perform tasks without even being hired; it is just to show my commitment to this project. Looking forward to hear from you. Regards Shah
$368 USD in 8 days
7.3
7.3

You’re building a dual-mode OLED clock that mines BTC/ETH/LTC in the background while gating wallet access via fingerprint—a tight integration of embedded mining, secure biometrics, and live API feeds. Here’s the approach: - Hardware stack: ESP32-S3 for Wi-Fi/processing + ASIC mining module (e.g., BM1397 for SHA-256) + GT911 capacitive fingerprint sensor + 1.3" OLED. Power regulation via TPS63020 for stable 3.3V/5V rails. Thermal design will use passive heatsinks and CAD-optimized airflow in the enclosure. - Firmware: Bare-metal C on ESP-IDF for mining loops (stratum protocol), fingerprint matching (1:1 template storage in flash), and REST calls to CoinGecko’s API. FreeRTOS tasks separate mining, UI, and sensor threads; watchdog timers ensure fail-safe mode switching. - Delivery: KiCad schematics/BOM, flashed binaries with OTA update support, STL files for a 3-part enclosure (base/cover/vented lid), and a build guide with soldering/calibration steps. SSH access via ESP’s UART bridge will expose mining stats and logs. I’ll deliver a tested prototype in 7 days for $700, covering the scope as written; we’ll refine the figure once we walk through the mining chip selection and API rate limits. Let’s jump on a 15-minute call to align on the fingerprint sensor model and your preferred logging format.
$600 USD in 7 days
5.8
5.8

Hello, This project caught my attention because it connects well with my past experience in embedded systems, microcontroller programming, OLED display projects, sensors, firmware logic, and hardware-software integration. I have worked with microcontrollers, custom hardware debugging, displays, real-time device behavior, and connected systems where firmware, APIs, and user interaction need to work reliably together. Your smart crypto clock is exactly the kind of unusual proof-of-concept I enjoy building. I can help with OLED clock UI, Wi-Fi setup, live Bitcoin price API integration, fingerprint enrolment/unlock flow, QR code display, button/touch mode switching, mining module integration, temperature/hash-rate logging over SSH, power/wiring plan, enclosure design, BOM, firmware, and assembly documentation. One important technical note: Bitcoin and Litecoin mining can be handled through suitable ASIC/mining modules, but Ethereum is no longer mineable through traditional proof-of-work. I can suggest a practical alternative, such as replacing ETH with another mineable coin, showing ETH price/network data, or simulating ETH mining stats for the PoC. What I like about this project is that it is not just a clock. It combines embedded firmware, display UI, biometric access, crypto APIs, thermal design, and product-style documentation into one real prototype. I would be happy to help make it stable and reproducible. Best regards, Ammar
$590 USD in 7 days
5.2
5.2

Hi, I’m a senior embedded hardware and Linux systems engineer with extensive experience in custom IoT hardware, ESP32/Linux firmware, OLED interfaces, secure peripherals, and high-power embedded compute systems. I have developed multiple connected embedded products involving fingerprint authentication, Wi-Fi networking, crypto/API integrations, thermal-managed compact enclosures, and real-time monitoring dashboards on custom hardware platforms. Approach: ✅ I will define the optimal proof-of-concept architecture balancing mining capability, thermal limits, power consumption, and compact desktop form factor using suitable embedded Linux or ASIC/SBC hardware. ✅ I will design the complete electronics stack including OLED display, fingerprint reader, Wi-Fi subsystem, secure power architecture, thermal monitoring, and enclosure-ready PCB integration. ✅ I will deliver production-ready schematics, firmware source, CAD enclosure files, flashed images/binaries, BOM, and detailed assembly/setup documentation for reproducible local builds. Questions: ✅ What target mining performance or power-consumption limits should guide the hardware selection for BTC/ETH/LTC workloads? ✅ Should the system use dedicated mining ASIC hardware, GPU/SBC compute modules, or a hybrid architecture for the proof-of-concept stage? Best, Yaroslav
$500 USD in 7 days
5.0
5.0

Dear Client, The main challenge in this project is building a compact smart hardware platform where real-time display control, secure biometric access, network communication, and system reliability are tightly integrated into one production-ready design. The objective is not just to create a prototype, but to build a dependable system that responds instantly, operates securely, and maintains consistent performance during continuous daily use. I can help you design and develop the complete system, including electronics, display control, and enclosure integration. My approach would be: ✅ design a compact embedded hardware architecture with stable power regulation and Wi-Fi connectivity ✅ integrate OLED display control with smooth UI transitions between Clock mode and Data mode ✅ implement secure fingerprint-based authentication for controlled access to protected features ✅ develop real-time data fetching through REST APIs The goal would be a stable and responsive smart clock device that combines real-time display, secure access control, and connected features in a clean embedded design. Two things I would confirm first: 1. Which hardware platform do you prefer? 2. Do you want the system to operate fully offline except for API calls, or include cloud/dashboard integration as well? If you message me, I can suggest the best system architecture to balance performance, security, and long-term reliability. Best regards, Prat PCB Must Innovations
$500 USD in 4 days
6.3
6.3

I have completed similar embedded IoT and custom hardware projects involving OLED interfaces, biometric authentication, Wi-Fi connectivity, crypto API integration, thermal-managed enclosures, and Linux-based embedded systems. I’m an Embedded and Electrical Engineer experienced with custom PCB development, secure peripheral integration, and compact always-on devices using KiCad and embedded Linux environments. For your proof-of-concept device, I can develop: Custom electronics architecture with OLED, fingerprint sensor, Wi-Fi, and power management Secure fingerprint-gated Crypto mode with live API integration SSH-accessible monitoring for temperatures and mining statistics Compact thermally optimized enclosure with STL/CAD deliverables Complete firmware stack, schematics, BOM, and assembly documentation I can also help evaluate the most practical mining architecture for a compact desktop form factor, balancing thermals, power draw, and achievable hash performance. Deliverables will include production-ready hardware files, firmware source, flashed binaries, enclosure CAD, and reproducible build instructions. Best regards, Hasan
$250 USD in 5 days
4.4
4.4

We can deliver a working proof-of-concept embedded device with dual-mode display, secure authentication, and live crypto data integration. The system will be built around a compact embedded controller (ESP32 or Raspberry Pi) driving an OLED display, integrated with a fingerprint sensor for secure access control, and Wi-Fi connectivity for real-time data exchange. Core functionality includes: Clock Mode: accurate time display synced via NTP with smooth OLED rendering Crypto Mode: fingerprint-triggered unlock showing live Bitcoin price via API and rendering a Cash App QR code Secure mode switching between Clock and Crypto views via touch/button input System monitoring with optional temperature and performance logging over SSH Note: On-device BTC/ETH/LTC mining is not feasible on embedded hardware. Instead, we can integrate external mining pool data or simulate mining metrics for demonstration in the PoC while keeping architecture extensible for ASIC integration if needed later.
$500 USD in 7 days
3.3
3.3

Hello There!!! ★★★★ ( Building a secure embedded smart clock prototype with OLED display, fingerprint access, and real-time crypto integration ) ★★★★ Project understanding: I understand you need a hardware-based smart clock that runs real-time firmware, shows time, integrates fingerprint security, and switches to crypto mode with live Bitcoin data + QR display. It must also handle background mining logic, WiFi, and logging on embedded hardware. ⚜ HW design (MCU, OLED, WiFi, fingerprint) ⚜ Firmware in C/C++ real-time control ⚜ Fingerprint auth + mode switching logic ⚜ Crypto price API + QR generation ⚜ System optimization + thermal control ⚜ Enclosure CAD/STL design ⚜ Full docs, BOM & flashing guide I have worked on embedded IoT and firmware systems using ESP32/STM32 with C/C++, sensors and real-time control. I enjoy building stable hardware + software mixed devices. I will start with system architecture, then firmware modules, integrate each hardware component step by step and test stability under load. Let’s connect and discuss details so we can start building a solid working prototype. Warm Regards, Farhin B.
$256 USD in 10 days
2.9
2.9

Hi, This project is exactly the kind of embedded system work I specialize in — combining custom hardware, secure peripherals, networking, Linux/firmware integration, and production-ready prototyping into one stable device. Instead of forcing unrealistic “full ASIC mining” claims into a desktop clock, I would build a practical proof-of-concept architecture that genuinely works: optimized low-power mining client integration, OLED UI, fingerprint-secured crypto display, Wi-Fi auto-recovery, SSH diagnostics, thermal monitoring, and a clean enclosure suitable for future scaling. I can handle the complete stack: - Custom PCB design and power architecture - ESP32/Linux hybrid embedded platform selection - OLED graphics + responsive UI - Fingerprint enrollment/authentication - Live BTC API integration + QR rendering - Mining process management and remote logging - Thermal-safe enclosure CAD/STL for desktop use - Full reproducible documentation and firmware delivery I also have strong JLCPCB manufacturing experience and can help move this from prototype into a small production-ready revision afterward. I communicate quickly, document cleanly, and focus heavily on stable real-world bring-up rather than demo-only firmware. I’d be very interested in discussing the preferred mining architecture and target power envelope before starting. Best regards
$450 USD in 9 days
2.6
2.6

I understand you're looking for a sophisticated prototype, and my experience developing embedded systems with real-time data integration, similar to the crypto price fetching and display requirements, makes me confident I can deliver. I've successfully built devices that interface with external APIs and drive custom displays under tight resource constraints. My technical approach will involve a microcontroller (likely an ESP32 for its Wi-Fi and processing power) running a C/C++ firmware. The OLED will be driven using the I2C protocol. For crypto mining, I'll integrate lightweight mining software optimized for the chosen microcontroller's architecture, focusing on efficiency and minimal impact on clock functionality. API calls for coin prices will be handled via HTTP requests, and the fingerprint sensor will interface via a serial protocol, triggering the QR code display and wallet link. To ensure optimal performance and security, could you clarify the target mining difficulty and the desired refresh rate for the crypto prices? I'd be happy to schedule a brief call to discuss these details and how I can bring this innovative prototype to life.
$650 USD in 21 days
2.1
2.1

I can design the electronics and firmware for your secure Crypto-Clock. With my background in Industrial Electronics and custom hardware design, I can deliver a robust PCB, seamless OLED/fingerprint integration, and stable API communication. However, we need to adjust the mining requirement to align with hardware realities. Ethereum has transitioned to Proof of Stake and is no longer minable. Furthermore, embedded BTC/LTC mining requires dedicated ASICs that generate extreme heat, which strictly conflicts with a compact desktop clock enclosure. To make your concept a working reality, I propose two viable paths for the prototype: Option A (Micro-ASIC Integration): Engineering a custom layout that incorporates a low-profile USB ASIC module specifically for BTC/LTC, paired with an aggressive thermal management CAD design (heatsinks/fans). Option B (Secure Node & Monitor): Utilizing a robust microcontroller (like an ESP32) to handle the secure fingerprint gating, live price API feeds, OLED QR display, and pulling/displaying hash rates from your external remote mining rigs. Both paths will include full schematics, BOM, firmware, and step-by-step assembly instructions. Would you prefer to explore the micro-ASIC thermal design, or pivot to the secure dashboard/monitor approach? Let's discuss what fits your vision best. Best regards, Ridho
$250 USD in 7 days
2.1
2.1

Hi, good day! :-) I have a complete solution for developing your crypto-mining smart clock prototype with OLED display, fingerprint-secured crypto mode, and embedded mining functionality on custom hardware. * Design the complete embedded hardware architecture including MCU/SBC selection, OLED integration, Wi-Fi module, fingerprint sensor, thermal management, and regulated power delivery. * Develop firmware for clock display, mode switching, fingerprint authentication, QR code rendering, API-based Bitcoin price fetching, and SSH-based monitoring tools. * Configure lightweight mining workflows for BTC, ETH, and LTC with temperature and hash-rate logging optimized for continuous operation. * Create a compact enclosure design with proper airflow and thermal considerations, including STL/CAD files for prototype fabrication. * Deliver full documentation including schematics, BOM, flashed firmware binaries, assembly steps, and deployment/setup instructions. I have strong experience with embedded systems, IoT firmware, OLED interfaces, secure peripheral integration, API communication, Linux-based hardware environments, and custom hardware prototyping workflows. Let's discuss the details in chat. I am ready to start immediately. Best regards, Mark Rimando.
$500 USD in 7 days
0.0
0.0

As an accomplished expert in the realm of cryptocurrencies, I'm particularly excited about tackling your Crypto-Mining Smart Clock Prototype project. My skills in areas such as Blockchain, Bitcoin, and Cryptocurrency equip me to understand not just the core elements required of this task, but also the wider implications such as security and data management. Moreover, my speciality lies in merging cutting-edge hardware with intricate software programming and there's no better project to showcase this than developing a clock that doubles as a crypto-mining rig. Over the years, I've been actively involved in creating powerful embedded systems utilizing small displays or secure peripherals which makes me uniquely qualified for your project. Additionally, I've gained significant experience in developing low-level firmware components as well as managing mining hash rates and temperatures - all of which are critical aspects of your project. Finally, I'm committed to delivering stellar outcomes within tight deadlines. Being acutely familiar with the iterative nature of projects like this one, I'm adept at quickly identifying issues and refining prototypes accordingly until they're unquestionably stable. Choose me for your Crypto-Mining Clock Prototype venture and you can expect a harmonious blend of expertise, innovation, and dedication that will take your idea from concept to tangible reality impeccably.
$750 USD in 1 day
0.0
0.0

Hi, I reviewed your Crypto Mining Smart Clock prototype project, and I understand you’re looking for an embedded systems developer to build a hardware-based prototype combining real-time clock functionality with crypto/mining-related processing or simulation logic. This is a hardware + software integration task where clarity of system design is critical, especially in defining how timing, processing load, and hardware constraints interact within the prototype. I can help you with: • Embedded firmware development (ESP32, Arduino, or similar) • Real-time clock integration and scheduling logic • Prototype-level hardware-software architecture • Efficient low-level C/C++ implementation • Sensor or module integration if required • Serial communication (UART, SPI, I2C) • Debugging and system validation • Power and performance optimization I focus on building stable embedded prototypes with clean, modular architecture so the system behaves reliably under real hardware constraints. Before starting, I would clarify the expected behavior of the crypto/mining component (simulation, tracking, or actual computation) to ensure the architecture matches your goal. If you can share hardware details and functional requirements, I can begin planning the implementation immediately. Best regards, Sostenes Apollo
$250 USD in 1 day
0.0
0.0

Hello, I can develop a proof-of-concept embedded clock with OLED UI, fingerprint authentication, Wi-Fi connectivity, and crypto API integration. I will design firmware for mode switching, secure biometric gating, live BTC price fetch, QR display, and system monitoring over SSH. Hardware architecture (ESP32/RPi, sensors, power, PCB) plus BOM, schematics, and compact enclosure CAD will be provided. Note: BTC/LTC mining can be integrated via ASIC modules; ETH mining is not applicable on current networks. Thanks.
$500 USD in 7 days
0.0
0.0

Hello, Your concept is highly innovative and aligns well with my embedded systems and IoT development experience. I can help build a fully functional proof-of-concept crypto mining clock with secure fingerprint access, OLED interface, Wi-Fi connectivity, and compact thermal-aware hardware design. I am ready to start today. The solution will include: • Complete electronics architecture and component selection • Firmware for mining operations, OLED UI, fingerprint authentication, API integration, and SSH monitoring • Real-time BTC price fetching with secure QR display logic • CAD/STL enclosure design optimized for airflow and desktop usability • Full schematics, BOM, flashed binaries, and assembly documentation I can also recommend the best mining modules and controller platform to balance performance, thermals, and power efficiency for a stable prototype. My approach focuses on modular design, rapid iteration, and maintainable firmware to support future production scaling. I’d be happy to discuss architecture, timeline, and next steps immediately. Best regards
$500 USD in 3 days
0.0
0.0

Best Crypto-Mining Smart Clock Prototype Design Expert! ⭐⭐⭐⭐⭐ Hi, When I saw your Crypto-Mining Smart Clock Prototype requirement, it reminded me of several embedded IoT and display-based systems I’ve worked on — including Wi-Fi connected dashboards, OLED smart devices, biometric authentication modules, and compact embedded platforms with real-time data display and secure user interaction. This type of device needs a balanced embedded architecture capable of handling display control, Wi-Fi communication, fingerprint authentication, and continuous background processing while maintaining stable power delivery and thermal performance in a small desktop enclosure. ✅ I have 11 years of experience in embedded hardware and IoT system design — including smart display devices, biometric systems and compact PCB development. ✅ I deliver complete solutions: schematic design, PCB layout, component selection, system integration, and production-ready documentation. Before outlining a detailed approach, may I clarify: 1. Do you prefer a Raspberry Pi-class SoC or a low-power MCU-based architecture? 2. What display size and enclosure constraints are expected? Two quick suggestions: ✅ Keep power, RF, and processing sections physically isolated for stability. ✅ Use hardware-accelerated display handling for smoother UI performance. Freelancer doesn’t allow me to message first — happy to help you build a stable, production-ready prototype. Kind regards, Avi Gupta Quality is never an accident
$500 USD in 4 days
0.0
0.0

Woodland Hills, United States
Member since Mar 28, 2026
$250-750 USD
$250-750 USD
$250-750 USD
$500-1000 USD
$10-30 USD / hour
$750-1500 USD
₹1500-12500 INR
$150-350 USD
$25-50 AUD / hour
₹12500-37500 INR
$30-250 USD
$1500-3000 USD
€8-30 EUR
$250-750 USD
₹1500-12500 INR
$250-750 USD
$30-250 CAD
$750-1500 USD
₹1500-12500 INR
$8-15 USD / hour
₹600-1500 INR
$250-750 USD
$30-250 USD
$250-750 USD
$30-250 USD