Bolt Cable Pass-Through - XLR, BNC, Ethernet Verification¶

NEEDS_REVIEW CABLING

Summary¶

The chat includes a statement that Bolt XLR, BNC, and Ethernet lines are probably simple pass-throughs. This should be verified against official wiring documentation before being used for pinout decisions, custom adapters, or fault isolation.

Symptoms¶

You need to know whether the XLR, BNC, or Ethernet connections on a Bolt are wired straight through from the base to the camera head.
A camera-side cable is not passing signal and you want to determine whether the fault lies in the robot's internal cabling.
You are planning a custom adapter or breakout and need to confirm pin-for-pin pass-through before committing to a wiring scheme.
You are investigating whether shielding or ground issues from the camera side could travel back through the robot cabling.

Stable ID¶

ISSUE-IO-002

First Reported¶

2025-06-12 - Dan Gottesman said the cables on Bolts were "pretty sure" simply pass-through.

Use Cases¶

Checking whether camera-side XLR/BNC/Ethernet is wired directly through the robot
Diagnosing broken pass-through cable paths
Planning custom adapters
Understanding whether shielding/ground issues can travel through robot cabling

Current Community Status¶

[LIKELY] 2025-06-12 - User: Dan Gottesman¶

Bolt XLR, BNC, and Ethernet cables are likely pass-through, but this is not a verified pinout.

confidence_score: 0.42

WhatsApp Excerpts¶

2025-06-12 00:36 - ~ Indrek: Is there a diagram for the pinout of the XLR output on the arm of the Jr+? Looking to build a custom power cable for the Monstro
2025-06-12 00:43 - ~ Dan Gottesman: pretty sure all of the cables on the Bolts (XLR, BNC, ethernet) are simply pass-through. so you’d only need to worry about the cables you’re plugging into them, not the ports themselves.
2025-06-12 00:43 - ~ MRMC Support: Correct straight inline
2025-06-12 03:32 - Timothy Heys Cerchio: But, be aware that only pins 1 and 2 are actually connected on the (black) Camera XLR wiring inside the arm. So that it can't be mistakenly swapped for the 48v (red collet) XLR Ulti-Box power line.
2025-06-13 07:13 - ~ David Jeffries: I'd go Flair Intime - UE direct. Set static IP on UE to like 192.168.1.99 / 255.255.255.0. Confirm UE firewall is off. Ping UE to Flair comp. If working network is working. If not check cables, check Ethernet ports. Layer 1 issue. If it is working you have a policy issue somewhere. You might try sending a different protocol like osc to something like Protokol. Or get Wireshark and sniff the port to see if you're getting traffic. If you are passing through OS then you have an UE setting misaligned.