The graphical programming core board is specially designed for smart cars, robotic arms, robot competitions and maker developers. Adapt to HXFB graphical programming software, with an intuitive and convenient graphical operation interface, greatly reducing the programming threshold. 24 pins that can be flexibly configured as input/output mode (P00-P07, P10, P13-P17, P20-P27, P30, P53). Onboard 2 programmable LEDs, support infrared remote control, support NRF24L01 wireless remote control, all pins support PWM control, and the duty cycle is adjustable. 1. A total of 24 pins: P00-P07, P10, P13-P17, P20-P27, P30, P53 2. Pins can be configured in input/output mode 3. Support 4WD car control (need to be used with motor driver board, not included) 4. Support 2-way infrared obstacle avoidance module, support 2-way infrared tracking module 5. Support 1-way ultrasonic module to achieve obstacle avoidance function 6. Support Bluetooth module, baud rate 9600bps 7. All pins support LED control, brightness is adjustable, LED is lit at low level 8. Support PS2 handle remote control 9. All pins support PWM control, duty cycle is adjustable 10. On board 2 LEDs , support user programming 11. Support infrared remote control 12. Support NRF24L01 wireless remote control 13. Up to 9 servos can be controlled 14. Support eight-degree-of-freedom quadruped robot dog Power supply: DC7-12V Programming software: HXFB graphical programming software Different batches may result in variations in printing and silk-screen printing, but this does not affect usage Color: Black Material: PCB Package Contents: 1 x Graphical programming core board 1 x data cable 1 x pin 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.