Belay sensor

see https://github.com/Annex-Engineering/Belay/tree/main

BOM:

• PTFE tube m4 (OD) x m2 (ID)
• PC4-6M  (2)
• m2 x 10  (2)

preparation:

saw off the thread of one of PC4-6M to length of 15mm (see picture)

if you need to remove the tube from the collet