Electronics

I have a patent-pending, two-part proximity alarm that needs to move from concept to fully functioning prototype. The core of the job is solid circuit design: I want the system to be entirely battery-powered and capable of reliably triggering another device when the set distance is breached... (Budget: $1500 - $3000 USD, Jobs: Arduino, Circuit Design, Electrical Engineering, Electronics, Embedded Systems, PCB Layout, Prototyping, Signal Processing)

I need a robust arc-suppression circuit engineered specifically for my RF welding machine. The goal is simple and non-negotiable: stop destructive arcing before it reaches the generator or matching network, protecting the entire system from costly downtime and repairs... (Budget: ₹1500 - ₹12500 INR, Jobs: Bill of Materials (BOM) Analysis, Circuit Design, Electrical Engineering, Electronics, Embedded Systems, Mechanical Engineering, PCB Design and Layout, Simulation)

I have a commerical infrared device I want to push beyond its stock limits by unlocking and fine-tuning the voltage-gating parameters, and explore any additional user-interface controls that govern current (U/I)... (Budget: $375 - $1000 USD, Jobs: Circuit Design, Electronics, Embedded Systems, Microcontroller, Signal Processing)

I need five separate input-output matching networks for the MACOM CGHV270305, one for each of the following RF bands: • 30–200 MHz • 200–600 MHz • 600 MHz–1.8 GHz • 1.8GHz–4 GHz • 4GHz–6 GHz ... (Budget: £250 - £750 GBP, Jobs: CAD/CAM, Circuit Design, Data Visualization, Electrical Engineering, Electronics, Mechanical Engineering, Prototyping, Signal Processing, Simulation, Technical Documentation)

We are looking for an experienced freelancer to support us on upcoming drone development projects for our company. The work may involve design, prototyping, technical consultation, and development support depending on project requirements... (Budget: ₹12500 - ₹37500 INR, Jobs: Aerial Technical Site Survey, Aerospace Engineering, Electronics, Embedded Systems, PCB Layout, Product Design, Robotics, Wireless)