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I have an Arduino-based project running on ESP8266 boards with OLED displays (SSD1306 and SSH1106). The framework and firmware are already developed and editable through a web-server interface. The project fetches and displays live data from various APIs in ticker/scrolling text and chart modes. I am looking for a programmer to update the APIs and ensure the data is displayed properly on both OLED screen sizes. Current Setup: Boards: ESP8266 Displays: SSD1306 and SSH1106 (OLED) Firmware: Arduino-based, editable from a web-server Functions already in place: framework for API calls, display logic, ticker/chart modes APIs / Data Sources to Update: 1. Selected cryptocurrency values (stock ticker style: scrolling text or chart mode) 2. CO₂ price ticker 3. Top billionaires list 4. Selected military stock ticker 5. Selected Worldometer info (population, health, etc.) What I Need: Update the above APIs in the existing framework Ensure the data is fetched reliably and displayed correctly on both OLED screen types Maintain smooth scrolling ticker and chart display modes Nice to Have (Optional): Guidance on how I can later update or change APIs myself Deliverables: Working firmware with updated API integration Documentation (short notes) on how to modify/update APIs in the future Notes: The project is not from scratch, it’s mainly updating APIs and making sure everything displays correctly. Looking for someone efficient, reliable, and not overly expensive since the framework is already in place.
Project ID: 39744526
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103 freelancers are bidding on average €155 EUR for this job

With over a decade of hands-on experience in various aspects of Electrical Engineering, I believe I’m the perfect fit for your project. My depth of knowledge stretches from proficiency with microcontrollers like Raspberry Pi and ESP32—including the exact one being used in your system—to a keen understanding of embedded systems and digital system design. Being a specialist in microcontrollers and gifted with an adept command of C Programming, I can deftly update your APIs within the existing firmware structure. I am also well versed in OLED displays, including SSD1306 and SSH1106, ensuring perfect compatibility and displaying reliability. Moreover, my skills extend to crafting seamless algorithms as well as machine learning and deep learning which can be crucial in fetching data reliably and creating smooth scrolling tickers and chart display modes. Beyond just updating your APIs, I am committed to empowering you to maintain control over your system. Given this, I'll provide short notes documentation on how to modify/update APIs in future – enabling you to carry out updates yourself without relying on external help at every step.
€250 EUR in 7 days
8.0
8.0

Hi there, I’ve read your requirements and can help you update the APIs in your ESP8266-based project so that the live data is fetched reliably and displayed correctly on both SSD1306 and SSH1106 OLED screens. Since you already have the framework and display logic in place, this will mainly involve updating the API calls, adapting the parsing logic, and ensuring smooth ticker/scrolling and chart modes for the new data sources. I have experience with ESP8266, Arduino frameworks, OLED display drivers (SSD1306/SSH1106), and API integration, so I can get this done efficiently. I’ll also provide short, clear documentation to guide you in updating or changing APIs later if needed. Send me a message and we can start refining your project right away. Best regards, Samuel Tshibangu
€180 EUR in 1 day
6.3
6.3

Hello, Hope u r doing great! I have gone through the project and i believe that i can handle it well as i have great knowledge of Web Development, C Programming, Arduino, Data Visualization, Microcontroller, Data Integration, Embedded Systems, Software Documentation, API Integration and Electronics. Please have a look at my profile for my rating and reviews: https://www.freelancer.com/u/ayesha0124 Regards, Ayesha
€250 EUR in 8 days
5.6
5.6

Hi Gabriella T., I recently completed a similar project. Message me so I can show you that sample. Question: Do you require strict HTTPS (full certificate validation) for all APIs, and can you share exact endpoints/auth and rate limits? On ESP8266 this decides if we use BearSSL with pinned fingerprints vs minimal CA bundle, and how we size chunked transfers/JSON filters to fit RAM. Suggestion: Implement a lightweight DataProvider layer per source (URL, fields, interval, units) stored in LittleFS and editable via your web UI. Use HTTP streaming + ArduinoJson filters to extract only needed keys, with a staggered scheduler and cached last values (timestamped) to smooth updates. Add a display shim that unifies SSD1306 128x64 and SH1106 132x64 (column offset/page mapping) and uses region-based partial redraw for buttery tickers; charts use fixed-point scaling and a tiny circular buffer. Include retry/backoff, NTP sync, and offline fallback so the OLED stays responsive during API hiccups. Kindly send me a message, lets discuss in detail and my portfolio is uploaded here and on my website. Best Regards, Sid CTO and Co-Founder of Ekarthaan
€250 EUR in 5 days
5.4
5.4

Hi, how are you doing? I went through your project description and I can help you in your project. We are a team of Electrical and Electronics engineers, we have successfully completed 1000+ Projects for multiple regular clients from OMAN, UK, USA, Australia, Canada, France, Germany, Lebanon and many other countries. We are providing our services in following areas: Embedded C Programming. VHDL/Verilog, Quartus/Vivado, LABView/ Multisim/PSPICE/VLSI Network Simulator NS2/NS3 Microcontroller like Arduino, Raspberry Pi, FPGA, AVR, PIC, STM32 and ESP32. IDEs like Keil MDK V5, ATmel studio and MPLab XC8. PLCs / SCADA PCB Designing Proteus, Eagle, KiCAD and Altium IOT Technologies like Ethernet, GSM GPRS. HTTP Restful APIs connection for IOT Communications. Also we have good command over report writing, I can show you many samples of our previous reports. Kindly consider us for your project and text me so that we can further discuss specifically about your project's main goals and requirements. We can deliver your project efficiently within timeline. If you choose me, I think you won't regret. Best Regards.
€140 EUR in 7 days
5.9
5.9

Hello Gabriella T., I hope this message finds you well. My name is Mikhail, and I'm reaching out to express my interest in your project titled "Update APIs and Data Display on ESP8266 OLED Project - Arduino" With extensive experience and a strong skill set in Data Visualization, C Programming, Arduino, Embedded Systems, Data Integration, API Integration, Software Documentation, Microcontroller, Web Development and Electronics, I am confident in my ability to deliver outstanding results that meet your expectations. I have a proven track record of successfully completing similar projects, and I am eager to bring my expertise to your initiative. Understanding the importance of timely delivery and budget constraints, I am committed to providing efficient solutions without compromising on quality. I prioritize clear communication and collaboration, ensuring that we are aligned throughout the project's duration. I would be thrilled to discuss how I can contribute to your project's success in more detail over chat. Looking forward to the opportunity to work together. Best regards, Mikhail
€180 EUR in 3 days
5.1
5.1

As an experienced full-stack developer, I have the utmost confidence in my ability to update the APIs and ensure smooth data display for your OLED project. Over my 5+ years in the industry, I've built a strong skill set that aligns perfectly with your needs. I have extensive knowledge working with Arduino, ESP8266 boards, and OLED displays such as SSD1306 and SSH1106. Moreover, my proficiency in various modern web technologies - PHP, HTML5, CSS3 and JavaScript enables me to understand your existing firmware platform thoroughly and build upon it flawlessly. I possess advanced API integration skills which will be ideal for your project's successful completion. My previous work on AI-powered app development involved handling tons of live data from various sources just like yours where reliability and precision were key. Finally, I understand that maintaining a smooth scrolling ticker and chart display mode is crucial for project aesthetics. My expertise in UX/UI design will ensure the final product maintains its elegance while exhibiting real-time data seamlessly. In addition to delivering you a functioning firmware with updated API integration, I'll provide you clear documentation to easily modify/update APIs in future-proofing your solution. With me on board, you can be certain of efficient delivery without compromising on quality.
€350 EUR in 7 days
4.9
4.9

Hi Gabriella, Nice to meet you, this is Abdul and I have deeply gone through the job details and Immediately available to start the Job after discussion. ping me to get started. Thank you - Abdul
€30 EUR in 7 days
4.4
4.4

Hello, As an experienced full-stack developer, I am eager to tackle your project and put my React skills to use. Despite the fact that my primary focus has been on web development, I'm extremely adaptable and the core concepts of your ESP8266 boards and Arduino-based firmware align closely with my skill set. My strong understanding of APIs, combined with my meticulous approach to coding, will ensure that your project's API updates are implemented flawlessly. One of the aspects that sets me apart as a freelancer is my ability to learn and adapt quickly. Given the unique nature of your project - updating existing APIs within a specific framework - I believe my adaptability and attention to detail will prove invaluable. In addition to successfully executing the programming portion of your project, I am also equipped to provide you with detailed documentation on how to modify or update the APIs in the future. This will empower you with the capability to make changes as necessary without relying heavily on external assistance. Let's connect and take this wonderful project forward! Thanks!
€85 EUR in 2 days
4.0
4.0

Hello, It's great to see your detailed project description! I am interested in updating the APIs and data display on your ESP8266 OLED project. I will ensure reliable API integration and correct data display on both OLED screen sizes while maintaining smooth scrolling ticker and chart modes. Additionally, I can provide guidance on future API modifications. Let's work together to enhance your project efficiently. Looking forward to collaborating with you! John Allen
€100 EUR in 2 days
4.1
4.1

With over a decade of experience, including successfully completing over 60 projects, I am thrilled to offer my expertise for your Arduino-based project. As an electrical engineer and specialist in embedded systems and microcontrollers, I am well-versed in working with hardware like the ESP8266 boards and OLED displays. My extensive knowledge of Arduino and web-server firmware will be particularly advantageous as I update your APIs to ensure reliable fetching and precise display of data on both SSD1306 and SSH1106 OLED screen sizes. Having executed similar projects before, such as power monitoring systems and smart city technologies, I understand the necessity of maintaining a smooth scrolling ticker and chart display. Additionally, as a Verified Freelancer with exceptional customer feedback, I can provide you with not just a working firmware incorporating the updated APIs but also a concise documentation on modifying/updating the APIs for future use. My aim is to empower my clients to make changes themselves easily whenever necessary. Let’s transform your existing framework into a fully functional product together!
€140 EUR in 7 days
4.5
4.5

Dear Client, I’m excited about your project — it aligns perfectly with my experience and interests! With 12+ years working in Data Visualization, Web Development, C Programming, Data Integration, API Integration, Embedded Systems, Software Documentation, Microcontroller, Arduino and Electronics, I’ve built solutions just like this before. I’d be happy to share what worked and how I can apply it to your case. Here’s why I could be a great fit: ✅ Clear communication, clean code, and fast delivery ✅ Secure, scalable, and future-proof architecture ✅ Ongoing support even after launch (6+ weeks, no extra charge) ✅ Focused on real results, not just code If you're open to a quick chat, I’d love to walk through how I can help make this a success. Looking forward to connecting! Cheers, Oleksandr
€130 EUR in 3 days
3.7
3.7

I can develop firmware for your esp8266 and give you a working firmware with updated APIs. Hi, I am Zain. I can easily handle the task including • Embedded Systems • Firmware Development • HTTP / MQTT / Web sockets • ESP32 / ESP8266 web server • Arduino IDE / ESP IDF / Platformio • FreeRTOS etc. Lets chat. Best regards
€80 EUR in 1 day
3.9
3.9

Hello Gabriella, I am a Talented Electrical / Electronics and AI / Software Engineer with over 7 years of experience. I can work on your time zone and start working on your project immediately if you hire me. I will update the APIs for the live data and ensure they are fetched and displayed correctly on your OLED screens. My recent project involved integrating multiple APIs for a similar Arduino-based application where I successfully ensured smooth data visualization. To execute this, I will need access to the current codebase and APIs you wish to update. I would appreciate the chance to discuss the project in more detail. Best regards. ----Shohei----
€150 EUR in 2 days
3.6
3.6

Hello, I appreciate the opportunity to work on your Arduino-based ESP8266 project. Your existing framework is a robust foundation, and I am confident in my ability to enhance it by updating the APIs and ensuring the accurate display of data on both the SSD1306 and SSH1106 OLED screens. With a strong background in API integration and data visualization, I will ensure that the selected cryptocurrency values, CO₂ prices, billionaires list, military stock tickers, and Worldometer information are fetched reliably. I will also focus on maintaining smooth scrolling and chart displays, enhancing the user experience. Additionally, I can provide concise documentation to guide you through future API updates, empowering you to make adjustments as needed. Thanks, Muhammad Umair
€150 EUR in 5 days
3.7
3.7

⚠️!!NB!! ⚠️ YOU NAME THE PRICE — I’LL DOUBLE THE IMPACT Gabriella, let's upgrade your Arduino project with lightning speed and precision. A few reviews? That’s your edge. While others coast, I’m hungrier. I execute fast, sharp, and with something to prove. This project isn’t just work — it’s my statement. Your success is my reputation. With solid experience in API integration and automation, I guarantee seamless updates for your OLED screens. Let's revamp your project with updated APIs for crypto values, CO₂ prices, billionaires, military stocks, and Worldometer info. I'll keep the scrolling tickers and chart modes flawlessly smooth. I’d love to chat more about your project! Regards, Casper
€150 EUR in 7 days
3.2
3.2

As a seasoned senior software engineer with over a decade of experience, I believe I can be the efficient, reliable and cost-effective solution you're looking for. Working primarily in C#, .NET, .NET Core, Java and JavaScript among other languages has given me a keen understanding of firmware and APIs. Additionally, my proficiency in designing microservices-based architectures and RESTful APIs makes me an ideal candidate for your update project. In terms of my compatibility with the OLED displays and ESP8266 boards that your project utilizes, I'd like to stress my skillset in system integration, backend optimization and Test-Driven Development - all vital components for ensuring smooth data fetching and display operations. Furthermore, not only will I ensure your desired APIs are correctly updated in the existing framework but I will provide you with comprehensive documentation on how to later update or change APIs yourself if needed. This empowers you to take control of maintenance, ensuring scalability of your project. Lastly, my expertise in driving digital transformation combined with the fact that I've tirelessly honed my skills in delivering operational efficiency aligns perfectly with your intention to maintain code quality and reduce infrastructure overhead. With these qualities in mind, I'm certain that I can both execute this task flawlessly and even offer strategic insights that could elevate the efficiency of your existing project.
€200 EUR in 2 days
3.2
3.2

Hi, We reviewed your project description, and it appears that our team would be an excellent match for this job. We did the same work 3 months ago. We are an expert team which have many years of experience on C Programming, Electronics, Microcontroller, Arduino, Web Development, Embedded Systems, Data Visualization, Data Integration, Software Documentation, API Integration Please join me in chat so we can discuss your requirements in detail. Thank You
€130 EUR in 7 days
2.7
2.7

Dear Gabriella, I am keen to assist with updating the APIs and ensuring reliable, accurate data display on your existing ESP8266 OLED project with SSD1306 and SSH1106 screens. Your Arduino-based firmware’s web-server editable framework provides an excellent foundation, and I bring strong expertise in embedded systems, C programming, and API integration, aligning well with your requirements. I will update the cryptocurrency, CO₂ price, billionaires, military stock tickers, and Worldometer data sources within the current framework. Special attention will be given to robust HTTP request handling, JSON parsing, and optimized rendering for smooth scrolling ticker and chart modes across both OLED types. I will validate compatibility for display driver differences to ensure clean visual output. Additionally, I will provide concise documentation detailing how you can update or modify APIs independently in the future, empowering your continued project maintenance. With a professional approach focused on quality and efficiency, I will deliver a tested firmware update within your budget range, accompanied by clear instructions. I look forward to collaborating with you. Best regards, Aleksandar
€170 EUR in 2 days
2.7
2.7

I'll update the APIs to ensure reliable data fetching and proper display on both SSD1306 and SSH1106 OLED screens, maintaining smooth scrolling and chart modes, within the proposed budget and provide documentation for future API updates. Waiting for your response in chat! Best Regards.
€140 EUR in 3 days
2.4
2.4

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