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I already have a Raspberry Pi, an RTL-SDR stick and the LED/buzzer hardware installed in my car; what’s missing is the know-how to turn that pile into a dependable C2000 detector. Your mission is to help me finish the system so it continuously scans 380–420 MHz, measures signal strength and, once a user-set threshold is reached, drives a multicolour LED bar plus a small piezo buzzer. Here is what I still need: • RTL-SDR calibration and gain/AGC tuning for the C2000 band, preferably using rtl_power, GNU Radio or a Python wrapper such as pyrtlsdr. • A lightweight Python script that runs on the Pi, logs RSSI, and controls the GPIO-connected LED segments and buzzer with minimal latency. • Guidance on designing or trimming a stealth antenna that can live hidden behind — or even inside — a plastic bumper without sacrificing too much sensitivity; NEC2, 3D-printed housings or simple coax stubs are all fair game. • A short remote (or if you’re in the Netherlands, in-car) test session to verify the detector triggers reliably around live C2000 traffic, plus tweaks to cut false positives. I will grant you SSH access to the Pi for live debugging, share sample IQ captures and handle any soldering or mechanical tweaks you specify. Once the detector behaves consistently and the code is commented and pushed to my Git repo, the job is done.
Project ID: 39734593
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Hello, I am excited about the opportunity to collaborate with you on the C2000 SDR Detection System Build. Your existing setup with the Raspberry Pi and RTL-SDR stick is a fantastic start, and I have the expertise to help you transform it into a reliable detection system. To ensure optimal performance, I will begin with the calibration of the RTL-SDR and tuning of gain/AGC specifically for the C2000 band using tools like rtl_power or a Python wrapper. Furthermore, I will develop a lightweight Python script for your Raspberry Pi that manages RSSI logging and controls the LED segments and buzzer effectively with minimal latency. I can also provide guidance on designing a stealth antenna that maintains sensitivity while remaining discreetly hidden in your car. Lastly, I will be available for a short remote test session or, if convenient, an in-car session in the Netherlands to confirm the detector functions flawlessly and make necessary adjustments. What specific requirements do you have for the lightweight Python script and the antenna design to ensure they meet your expectations? Thanks, Faisal
€155 EUR in 10 days
0.0
0.0
37 freelancers are bidding on average €170 EUR for this job

As a seasoned electronic hardware and firmware engineer, I am well-versed in all the technical aspects required to complete your C2000 SDR detection system. I have an extensive understanding of PCB design, especially RF PCB layouts, which is crucial for the success of your project. Additionally, my proficiency in different programming languages such as Python will ensure a smooth operation of all the peripherals you need for this system. One of my core competencies lies in creating lightweight Python scripts that operate with minimal latency while still maintaining reliable performance – just what you need for logging RSSI and controlling the LED segments and buzzer accurately. I am experienced with implementing wireless technologies like ZigBee, ensuring that your hidden or stealth antenna design stays efficient without sacrificing sensitivity. To prove my capabilities further, I am readily available for in-car testing as per your preference or remote testing via SSH access. Once the project is completed, all code will be commented and pushed to your Git repo, guaranteeing full transparency and ease for future modifications if needed. Through my meticulous design-driven approach to projects coupled with unwavering commitment to delivering efficient cost-effective solutions on time, I know we can bring this innovative idea of yours to fruition. Let's chat further!
€140 EUR in 7 days
6.3
6.3

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
6.0
6.0

Hey! I've worked on a number of projects similar to this one. I have a lot of experience and knowledge in this field. My knowledge of business also gives me an advantage in this situation. Looking forward for the opportunity. Thanks
€250 EUR in 7 days
5.4
5.4

Hello, I understand your goal of turning the Raspberry Pi + RTL-SDR setup into a reliable C2000 detection system with LED/buzzer output. With 10+ years of hands-on experience in embedded systems, SDR, and Python automation, I can help you complete this project from calibration to field validation. Here’s how I’ll approach it: SDR Calibration & Tuning: Configure rtl_power/pyrtlsdr or GNU Radio for the 380–420 MHz C2000 band, fine-tuning gain/AGC for consistent RSSI results. Python Control Script: Develop an optimized Python daemon that logs signal strength in real time, maps thresholds to multicolor LED bar states, and drives the buzzer with low latency using GPIO. Antenna Guidance: Provide practical options for a discreet bumper-mounted antenna—ranging from tuned coax stubs to NEC2-modeled geometries—balancing stealth and sensitivity. Testing & Debugging: Support SSH-based debugging and live verification with your IQ captures, plus remote/in-car adjustments to minimize false positives and ensure stable triggering. Final Delivery: Clean, well-documented code pushed to your repo and clear handover instructions. I’d be glad to bring my SDR + embedded integration expertise to make your C2000 detector dependable. Regards, Karthik
€240 EUR in 7 days
5.3
5.3

As a seasoned software developer with over 6+ years of coding experience, I have developed an expertise in Python that is incredibly valuable for your C2000 SDR Detection System build. Being in the trading industry, where precise detection and quick response is paramount, I've honed my skills to ensure minimal latency in data processing and execution. My proficiency extends to various trading platforms as well as the Pine Script, which aligns with your need for a lightweight Python script. Not only can I help calibrate your RTL-SDR using tools like rtl_power or pyrtlsdr, but I can also develop a robust iPython code that logs RSSI and controls the GPIO-connected LED segments and buzzer with utmost efficiency. Additionally, my problem-solving methods have always remained a standout trait in my career. In line with this, I can guide you effectively on designing a stealth antenna that prioritizes maintaining sensitivity while being hidden behind or inside your car's plastic bumper. My knack for remote debugging and commitment to meet client’s needs ensures I’ll be able to handle any hurdles encountered throughout the entire process. Let's work together to build this reliable C2000 detector system promptly and precisely!
€400 EUR in 2 days
4.7
4.7

Building on my versatile skill set, which combines my passion for graphic design with my substantial experience in electronics and software architecture, I am confident that I am the perfect fit for your C2000 SDR detection system build. Over my 8-year career, I have gained extensive knowledge and hands-on experience with various tools and methodologies such as RTL-SDR calibration using rtl_power, GNU Radio, and Python wrappers like pyrtlsdr, all of which will come in handy for your project. I understand the specific challenges of your project - tuning precise frequency ranges, balancing between sensitivity and stealthiness of the antenna, and ensuring consistent performance. For example, I can leverage my familiarity with NEC2 to advise you on designing a stealth antenna that maintains adequate sensitivity without compromising its hidden placement within a plastic bumper. Additionally, I offer a unique benefit for effective collaboration: granting me SSH access to your Pi enables real-time debugging, ensuring any issues are resolved quickly. My thorough approach extends to creating commented code and pushing it to your Git repo for seamless integration. I would also gladly conduct remote test sessions on live C2000 traffic to optimize reliability while minimizing false positives. With me on board, expect the most dependable C2000 detector possible.
€140 EUR in 7 days
4.4
4.4

Hello, I have hands-on experience with RTL-SDR, Raspberry Pi, and Python-based signal processing, and I can help you finish and refine your C2000 detector system. I will calibrate and tune the SDR for 380–420 MHz, implement a lightweight Python script that continuously scans, logs RSSI, and drives your LED bar and buzzer with minimal latency, and guide you on building/optimizing a stealth bumper-mounted antenna. Once the detector is reliable, I can support remote testing (SSH or shared IQ samples) to tweak thresholds and reduce false positives, and document everything clearly in your Git repo. I’m confident I can deliver a dependable, well-documented solution tailored to your setup. Looking forward to collaborating with you to get this running smoothly. Best regards, Vlad.
€150 EUR in 3 days
4.6
4.6

As a multidisciplinary expert in 2D/3D modeling, animation, and engineering works, I bring a valuable combination of skills that make me uniquely suitable for your C2000 SDR Detection project. Not only do I boast comprehensive knowledge in electronic systems and software architecture, but I'm also well-versed in working with Python and the Raspberry Pi - essential components for the task at hand. In terms of implementing widespread scanning within the C2000 band, I am highly proficient in the use of rtl_power, GNU Radio and Python wrappers like pyrtlsdr to ensure accurate calibration and gain/AGC tuning. Additionally, my mastery of lightweight Python scripting ensures minimal latency while logging RSSI and controlling the GPIO-connected LED segments and buzzer - major functional goals of this project. Best Regards Harvinder
€75 EUR in 2 days
4.1
4.1

Hello there. , Good afternoon I’ve carefully checked your requirements and really interested in this job. I’m full stack node.js developer working at large-scale apps as a lead developer with U.S. and European teams. I’m offering best quality and highest performance at lowest price. I can complete your project on time and your will experience great satisfaction with me. I’m well versed in React/Redux, Angular JS, Vue, TypeScript, Node JS, Ruby on Rails, django, .net, html/css as well as javascript, jquery, web3, and solidity. I have rich experienced in Signal Processing, Raspberry Pi, Electronics, Software Development, Arduino, Embedded Systems, Software Architecture and Python. For more information about me, please refer to my portfolios. I’m ready to discuss your project and start immediately. Looking forward to hearing you back and discussing all details.. Thanks for giving opportunity Angel
€30 EUR in 7 days
3.8
3.8

As a Senior Full-Stack Developer with deep skills in Electronics, Python and Software Architecture, I have the perfect blend of expertise needed to take your project from where it is to where you want it to be. I've spent my career creating scalable, robust solutions that are focused on user experience - an approach that aligns perfectly with your need for a reliable C2000 detection system. In terms of realizing the tasks remaining, I'm not only well-versed in RTL-SDR calibration and gain/AGC tuning for the C2000 band but also experienced in using rtl_power, GNU Radio and Python's pyrtlsdr package. Building a lightweight Python script that addresses low latency requirements while logging RSSI and controlling GPIO-connected components is second nature to me. Moreover, I will guide you expertly in designing an efficient stealth antenna setup using approaches like NEC2 or 3D-printed housings as per your constraints. My penchant for detail will ensure not only high sensitivity but also minimized false positives. Lastly, my remote debugging capability coupled with SSH access will make our collaboration smooth and efficient. Let's get started on creating this dependable C2000 detection system!
€150 EUR in 7 days
3.4
3.4

As a seasoned freelancer with a strong background in Arduino, Electronics, Embedded Systems, Python and Raspberry Pi, I am confident in my ability to deliver an excellent C2000 SDR Detection System for you. I have consistently demonstrated proficiency in using rtl_power, GNU Radio, and pyrtlsdr for calibration and tuning, which will come in handy as I ensure your RTL-SDR stick is optimized properly to scan the C2000 band of 380-420 MHz. My aim is to develop a lightweight Python script that runs smoothly on your Pi while accurately logging RSSI and efficiently control the GPIO-connected LED segments and buzzer with no latency. Antenna design's another forte of mine. With your need for a stealth antenna capable of preserving sensitivity sans much visibility or modification to your car's appearance, I can either leverage NEC2 tools or even explore practical solutions like 3D-printed housings or simple coax stubs – whatever works best for your setup. Even down to post-installation tweaks ensuring the detector is reliant on live C2000 traffic without false positives, you can trust my expertise.
€51 EUR in 1 day
2.7
2.7

Hi Dear, For this project, I would like to focus on my Arduino and electronics skills that can be effectively used in your Raspberry Pi setup. My knowledge of RTL-SDR calibration, gain/AGC tuning for C2000 band and Python would prove invaluable in creating a script for continuously scanning 380-420 MHz Additionally, I have an eye for design which would help in designing a stealth antenna that does not compromise sensitivity. The skills would come together in creating a lightweight Python script that logs RSSI, monitors signal strength and drives the LED bar and buzzer when necessary. I believe I am the perfect fit for this task due to my strong understanding of not just the programming aspect but also the practical, hands-on nature of this project. My familiarity with various tools including rtl_power, GNU Radio and pyrtlsdr will ensure that I deliver efficient results while maintaining minimal latency. I assure you, with my ability to provide live debugging using SSH access to the Pi, there won't be any hiccups in the implementation process as I will maximize feedback from you at every stage. Here is my portfolio link - https://www.freelancer.com/u/ssumitkumar7800 Sincerely Sumit
€61 EUR in 1 day
2.6
2.6

Hi, thanks for posting. Just checked job description that I already have a Raspberry Pi, an RTL-SDR stick and the LED/buzzer hardware installed in my car; what’s missing is the know-how to turn that pile into a dependable C2000 detector I have carefully checked your requirements and could easily work with you. I would like to let you know that I have expert and commercial experience in Software Development, Raspberry Pi, Python, Software Architecture, Signal Processing, Arduino, Electronics and Embedded Systems. My skills are: Laravel, PHP, Codeigniter, Core PHP, HTML, CSS, and Javascript. Here are my other skills Front End: UI/UX Designer, Graphics Design, Vue.js, React, react.js, Node.js, Angular.js, HTML 5, CSS 3, Bootstrap, JavaScript, JQuery, Basic Photoshop, Figma, Webflow. Back End: PHP, Laravel, Codeigniter, Cake PHP, Ajax, jQuery, MySQL, Python. My work Capability : Responsible for communication for more than 10 hours each day. 8 Hours/Day and 40 Hours/Week. Daily or Weekly update.I am ready to work in a customized time zone i.e. EST/IST time zone and so. Waiting for your response!! Regards!
€155 EUR in 1 day
2.4
2.4

Hello, I’d be excited to help you turn your Raspberry Pi, RTL-SDR stick, and hardware setup into a reliable C2000 detector. With strong experience in SDR applications, Python development, and embedded hardware control, I can deliver a stable solution that continuously scans the 380–420 MHz band, logs RSSI, and drives your LED bar and buzzer with minimal latency. I’ll start by calibrating and tuning the RTL-SDR for your band of interest, using tools such as rtl_power, GNU Radio, or pyrtlsdr depending on what best balances speed and efficiency. From there, I’ll implement a lightweight Python script optimized for low overhead on the Pi, complete with well-commented code that ties sensor readings to GPIO-based LED and buzzer alerts in real time. On the RF side, I’ll advise on practical antenna options whether trimming coax stubs, designing a hidden whip, or modeling alternatives in NEC2—to achieve the best sensitivity while keeping the install stealthy. To ensure reliability, I’ll guide you through in-car testing (or join remotely with your IQ captures) to fine-tune thresholds and minimize false positives. The end result will be a dependable, low-latency detector, fully documented, version-controlled in your Git repo, and ready to use day-to-day. Would you like me to prioritize getting the Python control script and SDR calibration working first, or would you prefer we start with antenna optimization to maximize detection range from the outset?
€250 EUR in 7 days
1.8
1.8

✅ IF YOU’RE NOT HAPPY, YOU DON’T PAY ⚠️ I’ve worked on a similar project to this and it was very successful in creating a seamless and integrated system for C2000 detection in cars. While I am new to Freelancer, I have over 12 years of industry experience. I offer RTL-SDR calibration, Python scripting for RSSI logging and GPIO control, guidance on antenna design, and thorough testing for dependable results. I would love to chat more about your project! The worst that can happen is that you walk away with a free consultation from my 12 years of experience in the industry. Regards, Jason M
€150 EUR in 3 days
1.4
1.4

Let's talk about how I can be useful to you and complete your project. I have years of experience in RTL-SDR calibration and Python scripting for IoT projects. I'm offering my skills at a discounted rate for a limited period, committed to delivering high quality to build my reputation. I am well-versed in tuning RTL-SDR for the C2000 band, creating a lightweight Python script for data logging, and designing stealth antennas. Could you share the required specifications for the stealth antenna design? Chat with me and let's discuss project deadline, budget and other details. Regards, Jaco
€200 EUR in 14 days
0.0
0.0

If you don't like it, you don't pay and walk away with a free consultation. "I am a perfect fit for your project. I will ensure your Raspberry Pi, RTL-SDR setup scans the C2000 band flawlessly, triggering LED/bar & buzzer with precision. I offer RTL-SDR calibration, custom Python script development, stealth antenna design, and testing services. While new to Freelancer, I've successfully completed similar projects off-site. I would love to chat more about your project! The worst that can happen is you walk away with a free consultation. Regards, L.J. MOMSEN"
€150 EUR in 14 days
0.0
0.0

Hello there! I am prepared to undertake the C2000 SDR Detection System Build project. To fulfill your requirements, I will calibrate the RTL-SDR, tune the gain/AGC, and develop a Python script for signal strength measurement and GPIO control. Additionally, I will assist in designing a stealth antenna and conduct remote/in-car testing for reliability. I will leverage tools like rtl_power, GNU Radio, and Python wrappers for efficient implementation. Let's collaborate to ensure the system functions seamlessly and meets your expectations. Cheers, RedBrick American Engineering
€30 EUR in 2 days
0.0
0.0

I have come across your project and I am confident that my skills and approach make me a strong match for your project. I noticed you're looking for a dependable C2000 detector that continuously scans 380-420 MHz, measures signal strength, and triggers LED segments and a buzzer. My expertise in RTL-SDR calibration, Python scripting, and antenna design align perfectly with your needs. I am ready to help you complete the system by providing RTL-SDR tuning, developing the Python script, optimizing antenna design, and conducting remote testing in the Netherlands. With SSH access to your Pi, we can ensure optimal performance. Let's collaborate to bring your project to life!
€200 EUR in 14 days
0.0
0.0

Dear Brians, I was excited to come across your project; it’s exactly the challenge I love taking on. I specialize in crafting clean, modern, high-performing digital solutions that truly make an impact. From RTL-SDR calibration to Python script development and antenna design guidance, I can help you create a dependable C2000 detector with a sleek LED bar and buzzer system. With real-world experience in delivering projects like yours, I guarantee a sharp eye for detail and timely results. Let’s connect and bring your vision to life. SSH access for live debugging, sample IQ captures, and Git repo management are all part of the package. Best regards, Thomas
€150 EUR in 14 days
0.0
0.0

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