For beginners, Python programming is required when learning and making Raspberry Pi projects. We may often check the pin assignment table to find out the BCM code information and WiringPi code information corresponding to the relevant GPIO. This process is cumbersome and inefficient. In order to solve this problem, we designed a Raspberry Pi expansion board with detailed pin assignment table information. This IO expansion board is specially developed for Raspberry Pi and is perfectly compatible with Raspberry Pi 3, Raspberry Pi 4 and Raspberry Pi 400. We will show all the IO interface information tables of Raspberry Pi one by one. More importantly, the expansion board provides a 40-pin comparison silkscreen, which contains detailed BCM coding information and WiringPi coding information, which saves you the trouble of checking the pin comparison table frequently when programming with Raspberry Pi, and saves your project. precious time. Note: If you need more help, please refer to Pzsmocn Wiki for more help, SKU: PZSIORPI001. Standard - IO Port Working Voltage: 3.3V - Expanding Board Size: 65 mm * 52 mm * 18 mm (2.55 * 2.05 * 0.7 inch) - GPIO 40 Pin Cable Size: 20 cm (7.87 inch) Delivery List 1 * IO Expansion for Raspberry Pi 1 * Color GPIO 40 Pin Cable 1 * Copper Column Screw Packet See more

It saves you the trouble of frequently checking the pin comparison table when programming with Raspberry Pi, protects your project and saves precious time. The expansion board and color GPIO 40-pin cable are compatible with Raspberry Pi 400. The expansion board is perfectly compatible with Raspberry Pi 3 and Raspberry Pi 4. The pin comparison silkscreen contains detailed BCM code and WiringPi code comparison information for Raspberry Pi. The expansion board draws out the IO ports of the Raspberry Pi one by one, and provides a 40-pin pin control silkscreen.