Eltek Flatpack 2 DC Charge controller for Pylontech/Victron systems

Описание: Eltek Flatpack2 CAN Bus Controller with Arduino - 48V Battery Charging System

This project allows you to control an Eltek Flatpack2 48V/3kW power supply using an Arduino Mega 2560 with CAN bus interface and TFT touchscreen display. Perfect for charging Pylontech USC3000 batteries from a generator during grid failures or emergency situations.

🔗 GITHUB REPOSITORY
https://github.com/eliotmansfield/Elt...

⚡ KEY FEATURES
• Real-time monitoring of voltage, current, power, and temperature
• Adjustable voltage (47.5V - 51.0V) and current (20A - 50A) settings
• Color-coded display with warnings and alarms
• Rotary encoder interface for easy parameter adjustment
• CAN bus communication with automatic power supply detection
• Over-voltage protection
• Configurable walk-in time (5 or 60 seconds)

🛠️ HARDWARE USED
• Eltek FLATPACK2 48/3000 HE REV 6 (48V 3kW DC Power Supply)
• Eltek Flatpack 2HE Power Board (eBay: cool_as_ice0)
• Arduino Mega2560
• MCP2515 CAN Bus Shield
• 3.5" TFT LCD Shield (MCUFRIEND_kbv compatible)
• KY-40 Rotary Encoder
• 15-72V to 12V DC-DC Buck Converter
• 50W 50Ω pre-charge resistor
• Battery isolator and safety switches
• AMPHENOL RadSok SurLok Plus connectors (Pylontech style)

💻 SOFTWARE
Arduino libraries: mcp_can, SPI, MCUFRIEND_kbv
Full source code and wiring diagrams available on GitHub

⚠️ SAFETY WARNING
This project involves mains voltages and lithium batteries - both can be extremely dangerous if mishandled. This is an EXPERIMENTAL project - use at your own risk and modify accordingly. Always follow proper safety procedures and consult qualified professionals when working with high voltage and high current systems.

📝 NOTES
• Optimized for Pylontech battery charging (52.14V = 100%, 50.76V = 90%, 47.5V = 10%)
• CAN bus operates at 125 kbps
• Display updates every second with real-time status
• Known issue: Settings are resent periodically (workaround provided in code comments)

This was "vibe coded" with Claude AI - eye protection recommended for professional coders! 😄

🔗 Links:
GitHub: https://github.com/eliotmansfield/Elt...
Website: www.mez.co.uk

#Arduino #EltekFlatpack2 #CANbus #BatteryCharging #OffGrid #Pylontech #PowerSupply #DIY #Electronics #Maker #48VSystem #BackupPower #RenewableEnergy