@Maximilian-Gerhardt wow, great write-up & great project, as usual!!
Btw, we have @h0l0gram 's DHT program in our repo as well: https://onion.io/2bt-reading-dht-sensor-data/

@luz Correct me if I'm wrong, but the patch you linked is more-or-less the same as we use in the Omega2 build system? https://github.com/OnionIoT/source/blob/lede-17.01/target/linux/ramips/patches-4.4/9999-spi-mt7621.patch