Uctronics SSD Cluster Case for Raspberry Pi _ARD_SHIELD two three-pin headers (P7/P9) are

two three-pin headers (P7/P9) are exposed above the Raspberry Pi’s USB and Ethernet ports for use by the optional XLR board (coming soon)

The chassis now provides a more robust way of holding the ping pong ball

The Bonnet comes with a 2

you can see a simple 555 LED flasher built up with the Three Fives kit

then there's a Homebridge plugin for the BME280 to let you use the sensor for home automation and monitoring

Uctronics SSD Cluster Case for Raspberry Pi _ARD_SHIELD two three-pin headers (P7/P9) areIdeal for a range of projects such as personal servers, NAS setups, crypto nodes, hosting, media servers and more, this all metal cluster case can hold 4x Raspberry Pi boards (Pi 4 3) and 4x SSDs, each easily accessible via thumbscrew removable trays. Two 80mm fans (included) fit securely to the rear of the case providing essential airflow to keep your boards cool. The simple 2 pin GPIO connection simply fits onto two of your Raspberry Pi GPIO 5V GND