MCU: ESP32 with 4Mb Flash, supporting multiple communication protocols including UART, SPI, , CAN, I2S, and SDIO. Wireless capabilities with Wi-Fi 802.11 b/g and Bluetooth BLE V4.2 for versatile connectivity. TMC2209 ultra quiet motor driver with fast current regulation, low-power standby, and a current of 2.8A for bidirectional stepper motors. MT6816 magnetic encoder chip for absolute angle measurement from 0 to 360 °, with high speed and . Operating temperature range of -40 °C to 125 °C, ensuring reliability in extreme conditions. This product combines advanced technology with robust performance features, making it ideal for various applications. The ESP32 MCU provides a powerful processing unit with extensive connectivity options, while the TMC2209 motor driver ensures smooth and quiet operation of stepper motors. The MT6816 encoder chip offers precise angle measurements, enhancing the overall functionality. With a wide operating temperature range, this product is designed to perform reliably in diverse environments. Color: Black Material: PCB+Plastic Package Contents: 1 X driver motherboard 1 X 3D printed shell 1 X 0.49-inch OLED display screen 1 X needle arrangement 1 cord 1 X heat sink 2 X connecting wires 4 X M3X40 screws Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.