Li-ion Home UPS Firmware Development
Publicada el 2026-07-20
Descripción de la oferta
**Project Title:** Firmware Development for Li-ion Home UPS (Renesas MCU) We are looking for an experienced Embedded Firmware Engineer/Freelancer to develop firmware for a Li-ion Home UPS product using a Renesas microcontroller. **Project Details:** * Product: Li-ion Home UPS * Rating: 1250VA / 12.8V (4S LiFePO4 Battery) * MCU: Renesas * Topology: Low Frequency Transformer Based Home UPS **Scope of Work (3 Stages):** **Stage 1:** * ADC implementation (Battery Voltage, Current, Temperature) * LCD Display Development * Relay, Fan, and Buzzer Control * Fault Code Display **Stage 2:** * SPWM Generation * Inverter Control * Battery Charging Algorithm * Mains Changeover Logic * Protection Features (Overload, Short Circuit, Low Battery) **Stage 3:** * BMS Communication * Backup Time Estimation * Data Logging * Advanced Features and Production Support **Requirements:** * Experience with Renesas MCUs * Experience in Home UPS/Inverter firmware development * Knowledge of SPWM, Battery Charging Algorithms, and Power Electronics * Ability to provide complete source code, documentation, and programming support Existing Home UPS models and hardware references will be shared with the selected freelancer. Please share: * Relevant project experience * Development timeline * Commercial quotation * Support period after delivery Looking forward to working with experienced embedded engineers.
Fuente original: freelancer