ESP32 Elevator Controller Board Kit | G+4 Selective Collective Logic

The Elec Design Hub flagship Selective collective elevator controller board kit sets the engineered standard for modern low-rise vertical mobility. Designed specifically for passenger elevators requiring high-speed routing and optimized directional sweeps, this complete fabrication ecosystem provides everything from the machine room processing unit to the premium Car Operating Panel (COP). Stop worrying about sourcing mismatched components. This highly reliable 5-floor elevator PCB assembly is architected by an IIT Kharagpur alumnus bringing over 45 years of hands-on industrial expertise directly to your factory floor.

Inside the Complete Selective Collective Elevator Controller

Because selective collective logic requires intermediate floors to have both "Up" and "Down" hall buttons, this comprehensive hardware package includes expanded display routing.

• 1 No. Master Motherboard + Display Driver: The heavy-duty, ESP32-based core logic controller.
• 8 Nos. Scrolling Dot Matrix LOP Cards: High-visibility hallway displays explicitly configured for the expanded hall call inputs (Ground through 4th floor).
• 1 No. Premium Nextion TFT Driver Card & 3.5" Touch Display: A modern, full-color interface for the elevator cabin (Nextion Discovery NX4832F035). We will fully customize this screen with your corporate branding before delivery based on our "Product Customization Request Form."
• 1 No. Heavy-Duty Open-Frame SMPS Card: Clean, isolated 12V / 3A DC output specifically filtered to handle the severe electrical noise generated in elevator shafts.

Theory of Operation: Directional Sweeps

Unlike basic chronological controllers, this system utilizes True Selective Collective Dispatching. The dual-core processor utilizes independent memory arrays (callsDown and callsUp) to calculate the most efficient path. It intelligently ignores opposite-direction hall calls until the current directional sweep is complete, drastically reducing mechanical wear and passenger wait times.

Technical Specifications & Core Architecture

Processing & System Memory

• Microcontroller: Dual-Core ESP32 Processor (Tensilica Xtensa LX6 @ 240MHz).
• System Capacity: 5 Stops (Ground + 4 Floors).
• I/O Expansion Bus: Features dual I2C-driven MCP23017 16-bit I/O expanders. These physically isolate the main sensor logic from the display output networks, ensuring absolutely zero signal crosstalk.
• "Secret Reset" hardware hack (simultaneous Button 0 + Button 4 press) for rapid closed-panel system reboots.

Input / Output & Drive Integration

• Motor Interface: This highly adaptable, VFD compatible elevator controller kit features 4 dedicated relay outputs (High Speed, Low Speed, Motor Up, Motor Down) for smooth acceleration/deceleration profiling.
• Call Registration: Dedicated hardware latching and visual LED feedback for independent Car Calls, Hall Up Calls, and Hall Down Calls.
• Input Protection: PC817 Opto-isolated inputs ensuring industrial-grade noise immunity.
• Signal Filtering: Advanced 50ms software RC debounce filtering on all floor leveling sensors.

Failsafe Protocols & Emergency Logic

• Failsafe Logic: Hardware-level SAFETY_CHAIN_PIN polling overrides all active software dispatch commands if a physical door lock or overtravel switch is broken.
• Anti-Burnout Drive Protection: A 25-second threshold monitor immediately cuts VFD triggers and throws an 'Error State' if mechanical movement fails.
• Fireman Mode V3: Upgraded emergency recall logic completely wipes all active callsUp and callsDown arrays and forces an uninterrupted descent to the Ground floor.
• Maintenance Mode: Complete logic lockout allowing site technicians safely controlled manual jogging.

Display Communications

• Premium Serial Data: Native Nextion TFT protocol support via asynchronous UART for high-end COP integration.
• Secondary I/O Display Drive: Pre-programmed parallel logic outputting standard characters (0-9) and custom status states ('E' for Error, 'F' for Fire, 'P' for Manual Mode) to traditional LOP displays.

🛠️ Engineering Bonus: Our Commitment to OEM Partners

We don’t just ship parts; we supply the blueprint. Your order includes comprehensive data files: the User Manual, Motherboard Interconnection schematic, Standard Panel Wiring Diagram, and Complete Technical Specifications.

Standard Order (1 Kit)

Ideal for testing and prototyping. Includes our Suggestive Wiring Diagram and Complete BOM. You get a proven reference design to base your panel around.

OEM Partner Order (2 Kits or More)

The ultimate value for high-volume manufacturers. Order a minimum of 2 or more kits, and our engineering team will provide a Fully Customized Wiring Diagram and BOM tailored specifically to your factory’s standard panel enclosures and contactor choices. We do the heavy engineering lifting for you.