FTDI Serial TTL-232 USB Type C Cable (5V Power / 3.3V Logic) Brand_Waveshare or auto brightness in different

or auto brightness in different environment

A bit of soldering is required to attach the two matrices onto the backpack but its very easy to do and only takes about 10 minutes

You can read the data over I2C and Bob's yer uncle

Built-in microSD slot

FTDI Serial TTL-232 USB Type C Cable (5V Power / 3.3V Logic) Brand_Waveshare or auto brightness in differentJust about all electronics use a UART serial port with RX and TX pins for debugging, bootloading, programming, serial output, etc. But it's rare for a computer to have a serial port anymore. Thus, a serial cable is an essential part of any electrical engineer's toolkit. This is a USB C to TTL serial cable with an FTDI FT232R usb serial chip embedded in the head. It has a 6 pin socket at the end with 5V power and ground, and 3. 3V logic (5V compatible)