Capacitors on Dlink power feed

[shai]

Hello, all.

We have some problems while working with the Dlink access point. The Driver Station is constantly losing communication with the robot. Windows shows that the wireless network is not broadcasting, after a minute it shows again and the robot is back online. This happens every few minutes, most often when the robot starts moving or (but not only) when the battery is low.
We are in Israel and therefore using a custom made AP.
We checked the wiring and it all seems fine. The power supply is from the dedicated 12V terminal on the PDB and through the 12V-5V convertor.

We believe that this is a voltage drop problem. We think of connecting a capacitor on the power cables (4700 μF, the AP works on 5V - 2A). Is this legal?

Do you have other suggestions?

Thank in advance,
Shai Noy, Team Artemis #3083