Electronics

I want to build a clean-sounding, reliable TDA2050 power-amplifier stage for a home audio setup that will accept a purely digital source (e.g., DAC board, streaming receiver) as its input. The job is to... (Budget: $210 - $415 USD, Jobs: Audio Engineering, Electrical Engineering, Electronics, Embedded Systems, Microcontroller, PCB Design and Layout, PCB Layout, Signal Processing)

I’m putting together a compact home audio system that runs a sealed-box subwoofer and a pair of midrange drivers from a single TDA7388. My plan is to feed the two bridged channels through a JRC4558 low-pass network for the sub, while the remaining two channels stay full-range for the mids... (Budget: $250 - $750 USD, Jobs: Audio Engineering, Circuit Design, Electrical Engineering, Electronics, Embedded Systems, PCB Layout, Prototyping, Signal Processing)

I need a compact boost-converter design built around the LM257 that will take an input anywhere between 3 V and 5 V and reliably produce 12 V. The main objective is simply to raise the voltage—efficiency tweaks are welcome, but only if they keep the 12 V output rock-solid... (Budget: $250 - $750 USD, Jobs: Circuit Design, Electrical Engineering, Electronics, Embedded Systems, PCB Layout, Prototyping, Simulation, Technical Writing)

I need a seasoned electronics professional to methodically test and troubleshoot a consumer-grade device that is showing persistent battery-related problems. The unit fails to hold charge consistently... (Budget: $30 - $250 USD, Jobs: Circuit Design, Documentation, Electrical Engineering, Electronics, Firmware Development, Thermal Analysis, Troubleshooting, Wireless)

I need a complete PCB created from the ground up. Starting with my functional requirements, you’ll take the project through schematic capture, component selection, board layout, and all manufacturing outputs. (Budget: $30 - $250 NZD, Jobs: Altium Designer, Circuit Design, Electrical Engineering, Electronic Design, Electronics, Embedded Systems, Industrial Design, PCB Layout, Prototyping, Risk Assessment)

I’m looking for a VLSI-savvy freelancer who can take a simple circuit concept and turn it into a clean, ready-to-fabricate design. The task is firmly in the “basic” range, so I don’t expect multi-million-gate SOC complexity—just a well-thought-out block that follows good layout and timing practices... (Budget: min ₹2500 INR, Jobs: Circuit Design, Documentation, Electrical Engineering, Electronics, PCB Layout, Python, Simulation)

I’m moving from concept to bench-top reality on a new battery pack and I need an R&D hardware engineer who is equally comfortable with Battery Management Systems like Anker 737 & thermal control hardware... (Budget: $1500 - $3000 USD, Jobs: Circuit Design, Electrical Engineering, Electronics, MATLAB, MATLAB/Simulink, PCB Layout, Power Electronics & Battery Management (BMS), Thermal Analysis)

I’m developing a compact, sensor-based device whose sole purpose is accurate movement tracking. I already have the core concept and need someone who can turn it into a fully functioning prototype—including schematic capture, PCB layout, firmware, and a testable board... (Budget: ₹12500 - ₹37500 INR, Jobs: Arduino, Bluetooth Low Energy (BLE), Electrical Engineering, Electronics, Embedded Systems, Firmware Development, PCB Design and Layout, PCB Layout)

1. Project overview We are looking for an electronics design engineer to develop a controller / telematics module for installation in construction machinery (excavators, loaders, road-building equipment)... (Budget: €250 - €750 EUR, Jobs: Arduino, CAN Bus, Electronics, Embedded Systems, Firmware Development, Microcontroller, PCB Layout, Signal Processing, STM32, Web Development)

l proyecto quiero armar es por falta actualizaciones ubiquiti sunMAX SolarPoint MPPT Solar Charger 48V PoE Switch .. este proyecto https://github.com/fl4p/fugu-mppt-firmware , armar un poe swich 12/24/ 48 para alimentar camaras PTZ , starlik , punto acceso ... (Budget: $250 - $750 USD, Jobs: Circuit Design, Electrical Engineering, Electronics, Embedded C++, Embedded Systems, Firmware Development, MQTT, PCB Layout, Power Electronics & Battery Management (BMS), Telecommunications Engineering)

I am putting together a compact, battery-operated WiFi node that measures temperature with a BME280 and publishes the readings over 2.4 GHz via an ESP32 module. Everything will be powered from standard... (Budget: $30 - $250 CAD, Jobs: Antenna Design, Electrical Engineering, Electronics, Embedded Systems, Firmware Development, Microcontroller, PCB Layout, Sensor Integration)

I need a skilled electrician or technician to re-wire several aquarium components: water pump, LED light, and switch box. The goal is to enhance functionality. Ideal skills and experience: - Electrical... (Budget: $240 - $2000 HKD, Jobs: Electrical Engineering, Electronics)

I need a complete concept-to-prototype package for a portable, high-power electromagnetic pulse generator that will be used strictly for controlled laboratory research. The unit must fit in a small carry... (Budget: $250 - $750 USD, Jobs: Bill of Materials (BOM) Analysis, Circuit Design, Electrical Engineering, Electronics, Embedded Systems, Firmware Development, Mechanical Engineering, PCB Design and Layout, PCB Layout, Prototyping)

Objective Set up a robust GitHub-based DevOps system to automate firmware development, testing, and deployment for Arduino, STM32 and Nordic controllers. How to since we’re starting from scratch, we need help to design the GitHub architecture and repository structure... (Budget: $30 - $250 USD, Jobs: Arduino, Bluetooth Low Energy (BLE), CI/CD, DevOps, Electronics, Embedded Systems, Firmware Development, GitHub, Microcontroller, STM32)

Am nevoie de un proiectant hardware cu experiență solidă în piezoelectrică pentru a dezvolta un circuit dedicat unui sonar de măsurare subacvatică. Scop • Concepeți schema electronică și layout-ul unui... (Budget: €250 - €750 EUR, Jobs: CAD/CAM, Electrical Engineering, Electronic Design, Electronics, Embedded Systems, PCB Layout, Sensor Integration, Signal Processing)

I have an 18-station screw-tightening line that needs a robust PLC program and on-site commissioning. You will start with the existing PLC backup and full electrical drawings, then tailor the logic so... (Budget: ₹75000 - ₹150000 INR, Jobs: Automation, Debugging, Electrical Engineering, Electronics, Engineering, Microcontroller, PLC, Process Automation)

I have a complete set of a machine electrical schematics that currently follow non-IEC conventions. I need the entire project rebuilt in EPLAN Electric P8 so it reads and behaves like a native European design... (Budget: $30 - $250 USD, Jobs: AutoCAD, Automation, CAD Drafting Review, Documentation, Electrical Engineering, Electronics, Engineering Drawing, Project Management, Technical Documentation, Technical Drawing / Tech Pack)

PLC & Robot Data Integration Engineer — Contract Project (4 Months) Project Type:Fixed Price Contract Budget: ₹3,00,000 (slightly negotiable) Duration: 4 months Location: On-site required (Satara, Maharashtra)... (Budget: ₹150000 - ₹250000 INR, Jobs: Automation, CNC, Data Integration, Electrical Engineering, Electronics, PLC, PLC & SCADA, PostgreSQL, Python, Software Architecture)

I have a complete set of Rheon machine electrical schematics that currently follow non-IEC conventions. I need the entire project rebuilt in EPLAN Electric P8 so it reads and behaves like a native European design... (Budget: ₹1500 - ₹12500 INR, Jobs: AutoCAD, Automation, Documentation, Electrical Engineering, Electronics, PCB Layout, Project Management, Technical Documentation)

I need a simple, reliable way to power-up twenty-five individual 12 V DC regulators from a single point. My plan is to use a standard mechanical wall switch: flip it once and every regulator comes alive together... (Budget: $250 - $750 USD, Jobs: Circuit Design, Electrical Engineering, Electronics, Mechanical Design, Project Management, Troubleshooting)