This is models of my controller.
A0 - very small, used to 1/64 cars. Control 1 servo and 1 motor (driver integrated) + 4 light channel
A1 - can controll 2 servo and 2 DC motors (driver is ntegrated)

U can use it to adapt to your projects. Price is 15$ and 20$ but I don't know how I can sell them to you )