3D Printer Motherboard Kit for TinyBee V1.0 Control Board with Smart LCD Display and Motor Drivers DC12 to 24V Item Type: For TinyBee V1.0 Main Board Material: PCB, Aluminum Alloy Motherboard Model: For TinyBee V1.0 MCU: ESP32 WROOM 32U MCU Frequency: 240MHz Memory: 520K Input Power: DC12-24V, <20A Heater: 2 Heater Ends And 1 Heater Bed Temperature ADC: 3 NTC100K: TH1, TB, TH2 ( Jumper Selection Required ) Motor Interface: 5 Axes 6 Motor Interface (Dual Z Axes In Parallel) Stepping Drive Mode: STEP, DIR Moode Drive Signal: Support External High Current Drive Subdivision Setting: DIP Switch LCD Interface: Support LCD 2004, 12864, For MINI12864 V3 Serial Port: For TFT Series Screen, For USART2 is reserved. End Stop: X,Y,Z, MT DET 3D Touch: Support Power Protection: Support Power Reverse Protection and Power Spike Protection Motor Reverse Potential: Can be absorbed by phase sequence resistor to protect stepper driver. Firmware: For Marlin 2.0.X Firmware Update Mode: U Disk Upload Memory Card: Shipped Without Memory Card For Mini12864 V3.0 LCD Graphical Display Model: For Mini 12864 V3 Material: PCB Logic Level: Support 3.3V, 5V Logic Inputs Backlight Mode: RGB Adjustable Backlighting Backlight Adjustment: Light: Slight Preset  Applicable Firmware: For Marlin 2.0, For Klipper Applicable Motherboards: For Robin Nano V2, For SgenlV1, v2, For Genl, For Robin E3 Features: Uses its own storage card slot. Compatible with both 3.3V and 5V logic signals. Supports Gcode backlight settings, e.g. M150 R100 G100 U100. Support for Robin Nano V2, for Sgen IV1, for Sgen V2, for GenI, for Robin E3. For MINI 12864 V3 smart display with RGB backlight, support to change the backlight color online via LCD. Supports color changes in different states during printing. SPI communication with host microcontroller. Supports for Klipper for Marlin 2.0 firmware. A4988 Driver Introduction: A4988 is a complete microstepping motor driver with built in converter for easy operation. The A4988 can run bipolar stepper motors in full, half, 1/4, 1/8, and 1/16 step modes with output drive capability up to 35 V and ± 2 A. The A4988 includes a fixed off time current regulator in either slow or mixed decay mode. The A4988 converter is the key to easy implementation. The step input drives the motor one microstep forward with a single pulse input. There are no phase tables, high frequency control lines or complex programming interfaces. The A4988 interface is ideal for situations where a complex microprocessor is unavailable or overburdened. A4988 Driver Features and Advantage: Low RDS (On) Output Automatic Current D Decay Mode Detection Or Selection Mixing With Slow Current Decay Mode Synchronous R Rectification for Low Power Consumption Internal Undervoltage Lockout Cross Current Protection 3.3 and 5 V Compatible Logic Power Supplies Thermal Shutdown Circuitry Ground Fault Protection Load Short Circuit Protection Selectable Stepping in 5 Modes: Full Step, 1/2, 1/4, 1/8 and 1/16