STM32-Based UPS Redesign and Firmware Development

Project Title: 600VA Pure Sine Wave Offline UPS Design (STM32 Based) Project Description: We are looking for an experienced Embedded Hardware and Firmware Engineer to develop a 600VA Offline Pure Sine Wave UPS using STM32G030K6T6 microcontroller. We already have a working board. The requirement is to reverse engineer and redesign the same board properly for production with complete documentation and firmware. Technical Specifications: * Input: 230V AC, Single Phase * Output: 230V AC Pure Sine Wave * Battery: 12V 7Ah SMF * Topology: Transformer-based (Low Frequency) * Control: Fully STM32 controlled inverter logic Required Features: * Automatic changeover (Mains to Inverter) * Pure sine wave PWM generation via STM32 * 2-minute auto shutdown in backup mode * Low battery cutoff protection * Mains return detection * Battery charging control * LED indicators * Screw terminal connectors Development Scope: 1. Reverse engineering of existing working PCB 2. Complete schematic creation 3. Double-layer PCB design (power PCB standard) 4. Mostly SMD components (top-side placement preferred) 5. STM32 firmware development 6. Testing and debugging support Deliverables Required: * Schematic files * PCB layout files * Gerber files * Complete BOM with component specifications * Pick & Place file * STM32 firmware source code * Compiled HEX file * Wiring diagram * Testing procedure document Goal: Develop a stable, production-ready UPS board suitable for manufacturing. Please share: * Your relevant experience in UPS/Inverter design * Previous similar projects * Estimated timeline * Quotation Only experienced power electronics and STM32 developers should apply.

Projekt-ID: 40265547