bitbang-hal is used at run time in 5 crates (of which 1 optionally). It's used only as a dev dependency in 1 crate.

Depender (with downloads and own rev deps) bitbang-hal version
140 trinket_m0 ^0.3
140 itsybitsy_m0 ^0.3
130 1 itsybitsy_m4 ^0.3
d1-mini ^0.3
radio-sx1231 optional ^0.3.2