[techhelpbb]

Though this isn't quite what you asked it is relevant:

We put a laptop without the screen in our robot this year. It is connected to the Ethernet segment in the robot and it is using the original battery. It is connected to 2 USB webcams on the robot. It is doing vision processing using entirely custom software the programming team students created. The laptop has an SSD for a hard drive. We have been driving it over the bump (has to be at least 50 times now).

We have fielded it at competition and it's passed through the inspections.

There are rules regarding a variety of aspects of doing this, I suggest you check the cost limits, consider the additional weight, and of course consider how it communicates with the rest of the systems.

One aspect I will warn you about: the laptop has it's own battery so when the voltage of the robot battery drops from the motors running the laptop's power supply is entirely stable. Your own custom circuit needs to consider this power issue.