Assigning Trackers
The server has to know which tracker corresponds to which body part. The setup wizard handles this for you with shake-to-assign, but you can also do it by hand.
During the wizard
The wizard names a body part (e.g., “Left foot”) and asks you to tap or shake the tracker on that body part. The server detects the motion spike and assigns it. Repeat for each tracker. Hard to get wrong.
By hand
In the Trackers sidebar, every connected tracker has an entry. Click one to open its detail panel. There’s a Body location dropdown — pick a body part.
The standard mapping for an IBIS Full Body set:
| Body location | What goes there |
|---|---|
| Left foot / Right foot | Foot trackers (Advanced and Full Body sets, or the foot kit) |
| Left ankle / Right ankle | Lower-leg trackers |
| Left upper leg / Right upper leg | Thigh trackers |
| Hip | Hip strap tracker |
| Chest | Chest tracker (via chest harness) |
| Left upper arm / Right upper arm | Upper-arm trackers (Full Body sets, or the arm kit) |
Core (6) sets skip the foot and upper-arm slots; Advanced (8) sets skip the upper-arm slots. Every set has a chest tracker (except the Lite Edition, unless you added a harness).
Confirming you got it right
For each tracker, physically rotate the body part you’ve assigned. The tracker’s orientation arrow in the SlimeVR window should move with you. If a different tracker animates, you swapped two assignments — flip them.
What if you put a tracker on the wrong leg?
Easy fix: in the Trackers panel, swap the body location dropdown for the two affected trackers. No re-pairing, no calibration.
”Auto-detect” vs explicit assignment
The wizard’s shake-to-assign is fast but assumes you only have one tracker moving when you tap. If you’re in a crowded room with someone else’s trackers also in range, prefer the explicit dropdown method.
After assignment
Run Mounting Calibration so the server knows the orientation of each tracker on each body part. Without that step, your avatar will be rotated wrong.