Winegard
Winegard makes many portable RV satellite units that can be utilized either directly through a serial port to pass commands to it's firmware, or it's control PCB can be removed and replaced with an Arduino, H-bridge and gyroscope combo DIY custom control system. Both options are rather easy, but sometimes require knowing obscure information you would have no way of knowing beforehand -- this resource is for these types of things.
Write about briefly, link to, the power injection cable as well as the RJ25 + RS485 custom jobs often needed in order to work with these dishes.
Their main competitor seems to be Tailgater. (which may be owned by King Controls? their products are too similar to be coincidence)
Known units
Winegard Carryout / Winegard Carryout G2 / Winegard Carryout G3 / Winegard Carryout G4 / Winegard Pathway / Winegard Pathway X2 / Winegard Trav'ler / Winegard Trav'ler Pro /