Freelance Project: Advanced High-Voltage Control Motherboard for Imaging System (KiCad / Altium / Proteus) We are seeking a highly experienced Computer/Electronics Engineer with a strong background in high-voltage power systems, embedded control, and PCB

@electronicsdone

Best High-Voltage Control Board Design Expert for Imaging Systems! ⭐⭐⭐⭐⭐ Dear Client, The real value in this project is not just designing a control board, but creating a motherboard architecture that can reliably coordinate power, control, UI, and system integration in a high-voltage platform. I can help by: ✅ defining the motherboard architecture around the 22V source, regulated rails, MCU layer, touchscreen/mini-PC interface, and HV-control-side signals ✅ designing the schematic and PCB with attention to mixed-signal separation, PWM/control integrity, protection, and practical multi-rail implementation ✅ delivering board files, BOM, firmware skeleton, and design notes so the motherboard is ready for fabrication and integration This keeps the work moving toward a board that is organized, buildable, and easier to expand in later phases. Two quick questions: 1. Do you want ESP32 as the default MCU, or should the first phase compare ESP32 vs STM32? 2. Is the stronger priority fastest motherboard prototype, or a more architecture-heavy first phase? If you message me, I can outline the cleanest first-step system architecture and milestone structure. Best regards, Prat PCB Must Innovations

@cesur135

As an experienced engineer with a broad and deep understanding of the required skills, I am confident that I am the right candidate for your project. Having worked extensively on industrial automation in projects such as Wastewater Treatment Plant and Water Treatment Plant Automation, I am well-versed in complex systems and have a strong command over high-voltage systems and power electronics. Furthermore, my familiarity with SIEMENS TIA Portal, Simatic Manager, WinCC SCADA, PH & INFORMATION SERVER, and E plan P8 V2.6 - tools which you might find relevant - will facilitate our communication and collaboration throughout the project. I understand the value of delivering quality work within defined timelines. With this in mind, let me assure you that I can accomplish the assigned tasks to their highest standard while adhering to the agreed timeline. My approach to system architecture is thorough yet flexible; I emphasize on maximum efficiency without compromising on safety. Additionally, having worked with Delta PLC and ABB PLC in process automation at various factories and HES projects, not only do I have experience in integrating a wide range of equipment with different systems effectively, but I also have valuable insights into safety compliance grounds we need to consider effectively when designing systems incase of emergencies.

@edi45

Hi, what kibd of high voltage do you need? If i am not mistaken you didnt specify the high voltage number, 15V is relatively low. We can design it with ease. I assume it will only small piece of board to control larger system and 22v 2500 mAh is for the back up battery. I can help you design this critical battery that automatically charge and switchover, also run a low power mechanism if you need to preserve something. I worked with multiple voltage rail control. I defenitely can help you with this one. I have 11 years of experience in this field, and i am an indonesian resident if that help with all the test we're going to have

@nichitav7

Hello I will architect and deliver a noise-resilient, multi-rail mixed-signal motherboard with robust HV control interfacing, ensuring stable power, precise timing, and clean MCU–PC integration. Confirmations: - 22V battery → multi-rail design (3.3V / 5V / 12V / 15V) with high-efficiency buck stages + protection (OVP/OCP/thermal) - ESP32-based control with deterministic PWM, ms-level timing, and fine current/voltage scaling - HV driver interface (control side only): isolated PWM domain, noise-hardened, feedback-ready (voltage/current sensing) - Pre-heat subsystem: 5-step ramp (~60s), ~3V / up to 2.7A with closed-loop current regulation - Clean communication layer (UART/USB) for Windows 11 UI with structured command protocol - EMI-aware multilayer PCB (power + analog + digital separation, grounding strategy, filtering) Delivery / Scope: - Schematic + production-ready PCB (Altium/KiCad) - Gerber + BOM (validated components) - ESP32 firmware skeleton (drivers, control loops, comms protocol) - Block diagram + design notes (incl. HV interface guidance) Approach: - Partitioned architecture: Power / Digital / Analog / HV interface domains - Stability-first design: loop compensation, ripple minimization, sensing accuracy - Isolation strategy for HV noise immunity (gate driving + feedback paths) - Iterative validation: simulation (SPICE) + design rule checks before fabrication Tools -Altium Designer / KiCad, LTspice Regards, Nichita.

@ElectronicsMust

Dear Client, A project like this is won or lost at the architecture stage. The real challenge is making 22V battery power management, multi-rail conversion, ESP32 control, HV control-side interfacing, and UI communication coexist on one board without noise, control, or protection issues. With 11+ years of experience in embedded hardware, power electronics, PCB design, and mixed-signal control systems, I focus on boards where power, control, and manufacturability must all align early. ✅ Structure the motherboard around clean power domains, control isolation, and feedback-ready HV interfacing ✅ Build the board for real PWM/current/timing control rather than lab-only behavior ✅ Prepare schematic, PCB, BOM, firmware structure, and design notes with future phase expansion in mind • Outcome: You get a production-minded control motherboard direction that is clearer to prototype now and easier to expand later. For V1, I would prioritize clean control architecture and power integrity before overcomplicating the UI/control feature set. Quick question: is the first phase mainly to validate the control motherboard, or do you also want the pre-heat subsystem designed into the same revision? If aligned, share any block diagram or preferred tool flow and I will suggest the strongest architecture path. Regards, Avi Gupta Quality is never an accident