Write code to communicate IC2 connection between Raspberry 3b+ and Arduino Mega slave ( connected via logic level converter ). Arduino will perform quad (x4) BTS7960 43A H-Bridge motor control. Keyboard motor control script need to test. $50 budget
I am an arduino hobbyist. I used I2c connection between raspberry and arduino in one of my projects.
I will deliver it in 3 days. please share more information on your project.