You'll learn how to communicate two Arduinos via RS485.
Do you want to set a customized name and password for your bluetooth devices and robots!? then read this tutorial to help through.
How to Control 16 LEDs with 74HC595 Shift Register | Arduino 74hc595 16 led with 18 effects
As a fun start to 2022, I pulled out the HP vintage bubble displays I bought on eBay with a simple Verilog controller module on the Arty Z7.
Digital Water Level Display using Encoders-BCD to 7Segment-Hex Inverter | Water tank level Display