Development of a Working Ultrasonic Time-of-Flight (TOF) Prototype

@hayteekeys

HI, KINDLY READ THROUGH MY PROPOSAL I will design and build a rugged, handheld ultrasonic TOF instrument for accurate wave velocity measurement on Platinum, Silver, Nickel, and brass samples, delivering a complete working prototype. MY APPROACH ✅ Phase 1: Develop analog front-end (pulser/receiver, pre-amp, filtering) and select appropriate piezo transducers. ✅ Phase 2: Implement embedded firmware (ARM preferred) for precise TOF calculation, temperature compensation, and calibration routines. ✅ Phase 3: Assemble and test the full system with enclosure, verifying performance on reference samples. RELEVANT PROJECTS - Handheld ultrasonic NDT devices for material velocity and thickness measurement in metals. - Mixed-signal designs with high-resolution TOF processing and battery-powered operation. DELIVERABLES - Schematics, PCB Gerbers, and BOM - Firmware source code and build instructions - 3D enclosure files and one fully tested prototype with demonstration QUESTIONS 1. Can you share the lab-bench concept details, target frequency range, and known velocity reference values? 2. Preferred microcontroller platform or any size/power constraints for the handheld unit? 3. Any specific transducer frequency or sample thickness range? Ready to start immediately. With hands-on experience in ultrasonic NDT hardware and firmware, I can deliver a reliable prototype meeting your ±1% accuracy goal. Let's discuss the technical details and move forward.

@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-Rafiq

@cesur135

As an Electrical Engineer with extensive experience in Automation and Electronics, I believe I am well-suited for this project. My proficiency in mixed-signal design makes me adept at handling the delicate nature of your ultrasonic prototype development. Having previously worked on Industrial Automation projects utilizing Siemens and Delta PLCs and SCADA systems, I am comfortable with choosing specific components for the analog front-end, driving piezo transducers, and implementing precise time-of-flight algorithms using various platforms like ARM, DSP, or FPGA -- ensuring microsecond timing accuracy. Furthermore, my ability to program with C/C++ and familiarity with VHDL/Verilog allows me to write solid firmware that will trigger pulses, capture echoes, process signals effectively with envelope detection and thresholding. This will ultimately convert flight time to velocity accurately. Equally important, my comfort working on MATLAB or Python means I can also develop a signal-processing algorithm that will offer a comprehensive understanding of your system design. Additionally, I worked extensively on ensuring robust calibration workflows for automation projects in the past. Combining this with my analytical approach, I can provide you not only the requested schematics and PCB Gerbers but also solid firmware source code along with comprehensive documentation on

@Zainrais0786

I can design a working prototype of Ultrasonic Time-of-Flight (TOF) and write firmware for it. Hi, I am Zain. I can easily handle the task including • Embedded Systems • Digital Signal Processing / Digital Filters • Circuit Design • PCB Design • KiCAD / Altium • Mixed Signal PCB Designs / High Frequency PCB Designs • Firmware Development • C / C++ • Simulations etc. Lets chat. Best regards

@divyam12345

Dear Sir/Madam, I understand your requirements. I have 10 years of experience in Electrical Engineering and hardware development. I can help design and develop the ultrasonic TOF measurement device, including the hardware, PCB, firmware, signal processing, calibration, and testing. I will provide all required files, including schematics, PCB, source code, BOM, and documentation. I am ready to discuss your project and start working. Let's connect in the chatbox. Thank you, Dr. Divya.

@alluankit01

Hi, I can help develop your ultrasonic TOF handheld prototype for non-ferrous metal testing, including analog front-end design, transducer drive/receive chain, embedded firmware, timing algorithm, calibration workflow, PCB files, and prototype bring-up support. The best solution is to first confirm sample thickness, transducer frequency, coupling method, required probe geometry, battery size, and timing accuracy. I’ll then design the pulser/receiver, low-noise preamp, gain/filter stage, high-speed ADC interface, MCU/DSP processing, OLED/LCD UI, USB-C output, and calibration routine for Platinum, Silver, Nickel, and brass. I’m comfortable with ultrasonic sensing, TOF measurement, mixed-signal PCB design, low-noise analog circuits, piezo transducers, embedded C/C++, ADC capture, signal filtering, envelope/threshold detection, temperature compensation, calibration, and prototype documentation. Deliverables will include: * Ultrasonic TOF system architecture * Analog front-end schematic * PCB Gerbers and BOM * Firmware source code * TOF signal-processing logic * Calibration workflow * OLED/LCD menu interface * USB-C data output support * Enclosure concept files * Prototype testing and demo support I’ll focus on repeatable measurements, clean signal capture, practical calibration, and a reproducible design that can move from bench prototype toward a rugged handheld unit. Best regards Ankit

@rakhshanz3

Hello, I can build this ultrasonic TOF instrument end-to-end. I'll design the analog front-end (pulser/receiver, low-noise pre-amp, gain control, anti-alias filters), drive the piezo transducers, and implement microsecond-resolution TOF firmware on an ARM/DSP platform with high-speed ADC capture, envelope detection, thresholding and temperature compensation. Deliverables: schematics, PCB Gerbers, production BOM, firmware source with build instructions, a Python/MATLAB signal-processing reference, a compact 3D-printed enclosure with battery bay, plus a calibrated prototype verified on Platinum, Silver, Nickel and brass to within +/-1% over 15-35C with 6h+ battery life, and a store-reference-block calibration workflow. I hold a PhD in AI and have ~2 decades in software and embedded/hardware development (ex-CTO of an AI startup). Happy to discuss my approach and share relevant past work.

@anjalio22

Dear Client, I would appreciate the opportunity to work on your Portable Ultrasonic Velocity Meter project. I have experience in mixed-signal electronics, embedded firmware, PCB design, and precision measurement systems, and I can deliver a complete solution from concept to working prototype. My approach includes designing a low-noise pulser/receiver analog front-end, selecting suitable piezo transducers, implementing a precise time-of-flight algorithm on an ARM MCU (or FPGA/DSP if required), and developing firmware for high-speed signal acquisition, filtering, envelope detection, thresholding, and temperature-compensated velocity calculation. I will also design a compact battery-powered PCB, USB-C interface, LCD/OLED menu system, calibration routines with reference block storage, and a production-ready enclosure. You will receive complete schematics, PCB Gerbers, BOM, firmware source code, algorithm documentation, and 3D enclosure files. My goal is to achieve your accuracy, repeatability, and battery-life requirements while ensuring the design is reliable and ready for manufacturing. I look forward to discussing your requirements and delivering a high-quality solution.

@hexabitzprojects

Dear Client, Your ultrasonic velocity measurement project closely aligns with my experience in precision analog electronics, embedded systems, signal acquisition, and industrial instrumentation. I have 15+ years of R&D experience developing embedded hardware and firmware using STM32, NXP, TI, and ESP32 platforms. My work includes low-noise analog front-end design, high-speed data acquisition, sensor interfacing, PCB design, embedded signal processing, and industrial measurement systems. My approach: Design a low-noise pulser/receiver front-end with programmable gain, filtering, and high-speed ADC interface. Develop embedded firmware for pulse generation, echo acquisition, envelope detection, filtering, thresholding, TOF calculation, and temperature compensation. Implement calibration routines for reference blocks and automatic velocity correction. Design a compact battery-powered PCB with USB-C, LCD/OLED interface, and low-power architecture. Deliver complete schematics, PCB, Gerbers, BOM, firmware, signal-processing documentation (MATLAB/Python), enclosure recommendations, and prototype support. I'd be happy to discuss transducer frequency, ADC requirements, timing resolution, and the target embedded platform before starting. Best regards, Subhash Suman Embedded Systems | Analog Design | Signal Processing | PCB Design | Industrial Instrumentation | 15+ Years Experience

@gauravy749

"Ek enthusiastic learner aur developer jo naye web projects par kaam karne ke liye ready hai. Mujhe nayi technologies seekhna aur unhe real-world problems solve karne ke liye use karna pasand hai. Dedicated, hardworking, aur har kaam ko time par deliver karne ke liye committed."

@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