By mi_semion

in v4, there is a new construction of P1, P2, S1, S2, namely it's open pins.
It's a danger, especially if one tries to take running robot.
With open pins in construction, protection caps should be provided.

Mikhail Semionenkov
Hi Mikhail,
So sorry for too late reply.
Thank you for your support and suggestion. We are really appreciate it.
We are checking it and will make progress to solve this problem.