For Expansion Board Motor Servo Development Driver Board Compatible with building block shapes. It can be used with magic block series sensors to easily complete shapes and interesting experiments. It can be quickly connected with PH2.0 cable. 4-way motor control + 8-way steering gear control, easy to meet drive requirements. The expansion board adopts a central design as a whole, with left and right symmetry, which is very suitable for expanding the shape of building block robots and building block cars. The expansion board has a variety of functions onboard, such as Wifi camera serial port, 7 anti-reverse IO module ports, 4 I2C ports, 4 DC motor ports, 8 servo ports, 4 RGB lights, buzzer, etc. It is convenient for users to complete DIY. Onboard I/O devices: passive buzzer, 4 programmable RGB lights Motor interface: four-way DC motor (voltage is taken from the battery, current 1-3A), Servo interface: eight-way servo Expansion interface: 17Pin expansion IO port, module interface (serial port) 1, module interface (I2C) 4, module interface (single/two-way IO) 6, module interface (three-way IO) 1 Protection scheme: reverse polarity protection, low voltage protection, overcurrent protection Special socket: 1 gold finger interface Power supply interface: 18650 battery holder, external 3-5V power supply, Micro-USB power supply Output power: 5V (MAX: 1A), 3.3V (MAX: 0.5A) Size: 95 x 46mm Material: PCB colour: black Package Contents: 1 x Expansion Board 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.