When making Raspberry Pi projects or learning to use Raspberry Pi for python programming, we may often need to check its Pin-out Table to find out the BCM and WiringPi code corresponding to the related GPIOs, which is time-consuming and inefficient. Now in order to solve this problem, we designed a Raspberry Pi expansion hat with detailed Pin-out information.

This IO expansion hat, specially developed for Raspberry Pi, is perfectly compatible with Pi 3, Pi 4, and Pi 400. All IO ports of Raspberry Pi are led out one by one. Most importantly, the hat provides 40 PIN comparison silkscreens that contain detailed BCM code and WPI code information, which saves the trouble of frequently checking pin comparison table when programming with Pi.

There are two ways to use the expansion board:

• Directly plug in Raspberry Pi 3 and Pi 4
• Connect with Raspberry Pi 400 through 40 PIN double-row cable

Features:

• Complete and detailed pin comparison silkscreen
• Compatible with Pi 3, Pi 4, Pi 400
• Anti-reverse plug-in horn socket design and dedicated 40 PIN double-row cable

• IO Port Working Voltage: 3.3 V
• Module Size: 65x65 (mm) / 2.56x2.56 inch

Documents:

• Product wiki
  

Warranty: 90 days

• Warranty will not apply if Product fails or is damaged after delivery to you due to accident, abuse or misuse.

Package Includes:

• 1 x IO Expansion Hat for Raspberry Pi 
• 1 x 40 PIN Gray Double-row Cable Same Direction x 10cm 
• 1 x Copper Column Screw Packet