Electronics

# Hardware Development – ESP32-S3 Based Bicycle Race Timer (Prototype PCB) ## Project Overview We are developing a rugged bicycle race timer based on the ESP32-S3 N16R8 module. The core firmware has already been developed and is running successfully on the development board... (Budget: ₹1500 - ₹12500 INR, Jobs: Circuit Design, Electronics, Embedded Systems, Firmware, Microcontroller, PCB Design and Layout, PCB Layout)

I want a complete specialized electronic circuit that powers a reusable lighter. The goal is to replicate—or, if necessary, freshly create—the entire circuit so the finished device is: • Compact and portable... (Budget: $250 - $750 USD, Jobs: Altium Designer, Bill of Materials (BOM) Analysis, Circuit Design, Electrical Engineering, Electronics, Embedded Systems, PCB Design and Layout, PCB Layout, Signal Processing, Wireless Charging)

I’m building an embedded IoT device intended for industrial control environments and need an experienced developer who can take it from concept to working prototype. Scope The core of the project is... (Budget: ₹12500 - ₹37500 INR, Jobs: C Programming, C++ Programming, Electrical Engineering, Electronics, Embedded Systems, Microcontroller, PCB Layout, RTOS)

I’m putting together a single, compact kit that combines a LoRaWAN energy meter, water meter, PIR occupancy sensor, and a temperature & humidity probe—all feeding into one indoor gateway and a unified web dashboard... (Budget: $30 - $250 USD, Jobs: Data Visualization, Documentation, Electronics, Embedded Systems, PCB Layout, Product Design, Prototyping, Web Development, Wireless)

I'm looking for an experienced freelance sourcer / recruiter to build a PRE-SCREENED LONGLIST of 10 candidates. This is a sourcing / pre-screening engagement ONLY — I am NOT hiring or placing anyone through you, and there is NO placement fee... (Budget: $250 - $750 USD, Jobs: Electrical Engineering, Electronics, LinkedIn Recruiting, Local Job, Recruitment, Sourcing, Talent Acquisition, Technical Recruiter, Workday Talent & Recruiting)

Our manufacturing line in Malaysia is running on a Siemens PLC paired with a SCADA package that is already installed but only partly commissioned. I need an experienced Siemens specialist who can work... (Budget: ₹12500 - ₹37500 INR, Jobs: Electrical Engineering, Electronics, Microcontroller, PLC, PLC & SCADA, Project Management, Software Testing, Technical Documentation)

I need a clear, professional wiring diagram for a residential-scale pyrolyser and distiller unit that I am assembling in my workshop. The schematic must show every conductor, terminal, and protection device so an electrician can install and troubleshoot the system with confidence... (Budget: $10 - $30 USD, Jobs: AutoCAD, CAD/CAM, Circuit Design, Electrical Engineering, Electronics, Troubleshooting)

Ich brauche ein simples Zweigeräte-System, das ohne Smartphone oder App funktioniert und einen “Separations-Alarm” auslöst, sobald sich Sender und Empfänger mehr als etwa 10 Meter voneinander entfernen... (Budget: €8 - €30 EUR, Jobs: Electronics, Wireless)

I need a straightforward, fully-functional DIY project that I can assemble and demonstrate without extra troubleshooting. Any of the three domains—electronics, electrical, or instrumentation—are acceptable,... (Budget: $10 - $30 USD, Jobs: Arduino, Circuit Design, Electronics, Embedded Systems, Instrumentation, Microcontroller, PCB Layout, Raspberry Pi)

I need help creating a solid, production-ready program for a BRX PLC, model BX-DM1E-36ER3-D, that will interface with an SV2A-2040 drive. This is strictly a software-side assignment—no hardware wiring or panel design—so the focus is on writing and validating the PLC logic... (Budget: $25 - $50 USD, Jobs: Automation, Electrical Engineering, Electronics, Microcontroller, PLC & SCADA, Programming, Software Development, Technical Documentation)

I have a prototype in development and now need the PCB laid out so I can move quickly to a physical test board. The job centres on a moderate-complexity stack-up (three to four copper layers) suitable for short-run fabrication... (Budget: ₹12500 - ₹37500 INR, Jobs: Circuit Design, Design Optimization, DFM (Design for Manufacturing), Electrical Engineering, Electronics, Embedded Systems, PCB Layout, Rapid Prototyping)

I have a Bigtreetech Octopus Pro running a custom concrete 3D printer and I need Marlin up and running cleanly on it. The board is installed and powering up; the gap is the firmware. Your task is to... (Budget: ₹1500 - ₹12500 INR, Jobs: 3D CAD, 3D Printing, Arduino, C++ Programming, CAD/CAM, Electronics, Embedded Systems, Microcontroller)

Based on the complexity of system (industrial-level design with MCU, communication module, power management, and protection circuitry), Reliable and production-ready PCB design. Scope of Work (PCB Design)... (Budget: ₹12500 - ₹37500 INR, Jobs: 3D Design, Altium Designer, Arduino, Bill of Materials (BOM) Analysis, Circuit Design, Design Optimization, Electronics, Industrial Design, PCB Layout, Schematics)

Based on the complexity of system (industrial-level design with MCU, communication module, power management, and protection circuitry), Reliable and production-ready PCB design. Scope of Work (PCB Design)... (Budget: ₹12500 - ₹37500 INR, Jobs: 3D Design, Altium Designer, Arduino, Bill of Materials (BOM) Analysis, Circuit Design, Design Optimization, Electronics, Industrial Design, PCB Layout, Schematics)

I have the concept sketched and a clear use-case in mind: a slim, portable heating attachment that slips under a car’s torso belt, delivers therapeutic warmth through three selectable temperature settings, and recharges via USB without ever impeding the restraint’s normal function... (Budget: £250 - £750 GBP, Jobs: CAD/CAM, Electrical Engineering, Electronics, Materials Engineering, Mechanical Engineering, Product Design, Prototyping, Thermal Analysis)

I want to build a compact wireless system that monitors fluid level inside a tank and sends that reading to a dedicated receiver or gateway. The transmitter must be suitable for water, oil, and a variety... (Budget: $10 - $30 USD, Jobs: Arduino, Electrical Engineering, Electronics, Embedded Systems, LoRa, Microcontroller, PCB Layout, Zigbee)

I operate a small tourist attraction that transforms for Halloween and then again for Christmas. All the figures are mechanically and electrically ready; what I need now is clean, reliable programming so their movements line up perfectly with our lights and audio tracks... (Budget: £3000 - £5000 GBP, Jobs: Animatronics, Arduino, Automation, C Programming, C++ Programming, Control Engineering, Electronics, Local Job, Programming)

I am building a network of STM32-based boards that will cooperate as a single, industrial-grade automation platform. The stack must handle real-time sensor acquisition, deterministic control loops, secure cloud connectivity, and reliable board-to-board communication inside a factory environment... (Budget: ₹750 - ₹1250 INR, Jobs: Altium Designer, Arduino, Electrical Engineering, Electronics, Embedded Systems, Microcontroller, PCB Layout, PLC & SCADA, STM32, VSCode)

I need 5 working hardware prototypes assembled and tested. This is a personal wellness/fitness device that measures breath flow rate via a pressure sensor and sends the reading to a phone over Bluetooth... (Budget: $250 - $750 AUD, Jobs: 3D Printing, Arduino, Bluetooth, Electronics, Embedded Systems, Product Design, Prototyping)

Looking for an embedded systems engineer to design a small, low-cost, battery-powered handheld Linux recording device, inspired by: https://github.com/computerequipmentgroup/equip-1 This is a miniature field capture system, not a general-purpose handheld computer... (Budget: $10 - $30 USD, Jobs: Circuit Design, Electronics, Embedded Systems, Linux, Microcontroller, PCB Layout, Signal Processing, Software Development)