Build a USB Power Monitoring Device (ESP32 + INA219 + OLED)

@amelectronics

I am a skilled and reliable Embedded Systems Engineer with over 6 years of hands-on experience in Arduino, ESP32/ESP8266, and microcontroller-based development. I specialize in designing efficient, stable, and scalable embedded solutions, turning ideas into fully functional hardware-software systems. I have a strong background in electronics, sensors, communication protocols (UART, I2C, SPI, MQTT, WiFi, BLE), and real-time embedded systems. My development approach focuses on clean, well-structured, and well-documented firmware, ensuring long-term reliability and easy maintenance. I also provide thorough testing, debugging, and performance optimization, including power efficiency improvements where required. I am a detail-oriented engineer with strong problem-solving skills and extensive experience in hardware debugging and firmware optimization. Beyond technical expertise, I value clear communication, meeting deadlines, and maintaining high client satisfaction. I work closely with clients to fully understand project requirements and deliver high-quality results. Pricing is flexible and can be discussed based on project scope and complexity. I am open to both short-term and long-term projects. Let’s work together to build a professional, reliable, and efficient embedded system for your needs.

@Amidst

Hey there! I’m Alok, A PCB, Circuit and Mechanical designer with a passion for turning ideas into rock-solid, high-performance circuit boards. even expert on Python, C, C++ With nearly a decade of experience, I’ve tackled everything from compact consumer gadgets to complex industrial systems—always with a focus on precision, efficiency, and reliability. # Schematic & Layout Design – Clean, optimized, and manufacturable. # Component Selection & Library Management – No surprises, just the right parts for the job. # Reverse Engineering – PCB cloning, replication, and improvements. # Gerber, BOM & CPL Generation – Ready for seamless production. # DFM & DFA Expertise – Because great design means smooth manufacturing. # Multi-Layer, Flex, & High-Density PCB Design – Whatever the project needs. If you need a PCB and Code that’s efficient, reliable, and built for real-world performance, let’s chat. I’d love to help bring your project to life!

@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

@ahmedy607

Hi, I can build a compact USB power monitoring prototype using ESP32 + INA219 + OLED with clean, reliable performance. My approach is to design a stable pass-through power path with accurate current sensing, proper filtering, and real-time display over I2C. I’ll ensure calibration for reliable V/A/W readings and smooth OLED updates. Deliverables include a working prototype, clean Arduino/ESP32 code, schematic, and complete BOM. I can also provide a compact layout and simple enclosure if needed. I’ve worked on similar sensor-based embedded systems and can deliver within your timeline. Best regards, Ahmed

@ElecHamza

Hi, I will develop a precise USB power monitoring device using the ESP32 and INA219 sensor to provide accurate real time measurements of voltage, current, and power. I will integrate a clear OLED display via the I2C protocol and ensure the pass through circuitry is optimized for minimal voltage drop. My solution includes a professional schematic, a clean bill of materials, and well commented firmware for stable performance. I can also design a compact 3D printed enclosure to house the components securely while maintaining a small form factor. Having built similar sensor based IoT devices and power monitors, I can guarantee a reliable prototype within your specified timeline. Best regards

@ThynkLoop

Hi, I can build your USB power monitoring prototype using ESP32, INA219, and OLED display. I have experience working with ESP32, I2C sensors, and real-time display systems. I will provide a fully working prototype along with clean code and complete documentation. Scope: *Hardware setup (ESP32 + INA219 + OLED) *USB pass-through design *Real-time voltage, current, and power display *Clean firmware using Arduino/ESP32 framework Deliverables: *Working prototype *Source code *Circuit diagram *Component list Approach: *Connect INA219 and OLED via I2C *Read voltage/current data *Calculate power *Display values on OLED in real-time *Test with USB load

@Mwaleed30

Being an Electronic Engineer, Hardware Designer and a skilled PCB Designer with 3 +years of experience I make proper R&D projects Full schematics and real life single layer ,2 layers ,4 layers ,6 layer and multi-layers PCBs projects (i.e: 1:PCB of compact ear buds 2:Pcbs for compact usb with advanced security features 3:Pcbs which involves USBs 4:Also i made many large projects which handles high voltage AC and DC 5: 6 -layers PCB of Arm Cortex Processor involving Programming 6: Programmable Frequency Generator PCB 7: Compact Smart SOS PCB 8: High Volatge Ac to DC Converter with MCU STM32 programmability’s for 10KW system 9: 10KW AC Inverter with output voltage 24V 10: Qi 1.3 Wirless Charger Transmitter and Reciever 11: PCB for agricultural watering system that controls 50 fig trees with expansion capability to 100 trees) 12: Custom IO Board Design for Raspberry Pi CM5 with Integrated RP2040 And many more I have advanced level grip on softawares like Easyeda-Pro ,Kicad, Altium I will show you my PCB work separately I will handle your project and made it perfect in the best cheapest price and do its customisation First see me work then Hire me You can also see my Portfolio which reflects some of my PCBs projects In the end i will assure you that you will get professional level and great quality work in the best price Thankyou

@Rohinth5

Hello, I reviewed your requirement for building a USB power monitoring device using ESP32, INA219, and OLED display. I have a strong foundation in electronics and embedded systems and experience working with microcontrollers and sensor interfacing. I can develop a working prototype that measures voltage, current, and power in real-time and displays the values clearly on an OLED screen. I will ensure clean and well-structured code along with proper circuit connections and documentation. My Approach: Interface INA219 sensor with ESP32 using I2C Read voltage, current, and calculate power Display real-time data on OLED screen Ensure stable and accurate readings Provide circuit diagram and source code Deliverables: Fully working prototype setup guidance Clean source code Circuit diagram and component list I am ready to start immediately and open to discussion for any additional requirements. Thank you.

@Kiranshanwad

Hi, I can help you build this USB power monitoring device. I have experience working with ESP32, I2C sensors like INA219, and OLED displays. I can design the circuit, develop stable firmware, and deliver a working prototype with real-time voltage, current, and power display. I will ensure proper USB pass-through design so the device works reliably with phones and other loads. I can also provide clean code, circuit diagrams, and a component list. Let’s discuss your requirements and get started. Thanks

@hatimmoujahid

Hello, I can help you build this USB power monitoring prototype. I have worked on ESP32/Arduino projects with I2C sensors, OLED displays, power measurement and embedded firmware. I also have experience with PCB design, prototyping, debugging and sensor-based measurement systems. For your project, I would first make a simple and reliable pass-through circuit, then integrate the INA219 to measure voltage, current and power. After that, I would write the firmware for the ESP32/Arduino and display the values clearly on the OLED screen in real time. I will also test the prototype with different loads to make sure the readings are stable and usable. I can provide: Working hardware prototype Clean source code Wiring diagram Component list Basic testing notes I can deliver this within 5 days. Best regards, Hatim