[DK1] Bimanual bringup and camera sync for builders labs (advanced)

Advanced DK1 discussion around bimanual bringup, camera synchronization, and the failure patterns that appear when experiments scale.

This thread is for advanced DK1 builders working on bimanual and camera-backed setups.

What synchronization or bringup issue caused the most pain, and what was the first reliable fix?

If you reply, include one sign that told you the workflow was finally stable enough to trust.