this official Raspberry pi 5 case has a black/grey design that complements your Raspberry Pi 5 setup while providing precise access to all ports and status LEDs
1 × CJMCU PCA9548A I2C 8-Channel Multiple Extensions Development Board
0 Full-Speed Compatible: Supports USB 2
Output interface: 6 wire interface
It is fast reliable and does not require any additional components to make it work thereby increasing the practicality of it
74LS161 Synchronous 4-Bit Binary Counter IC - DIP-16 Package Raspberry Pi Power Supply this official Raspberry pi 5The 74LS161 is a high speed synchronous 4 bit binary counter IC from the 74LS logic family. It features synchronous counting, parallel load, asynchronous reset, and enable control inputs, making it ideal for use in frequency division, event counting, and digital clock or timer applications. Unlike asynchronous counters, all internal operations in the 74LS161 are synchronized with the clock input, which ensures reliable and glitch free output