bosko
I want to read data from DHT22 sensor but since it uses its own OneWire protocol, w1-gpio overlay does not work.
I know there is nerves_dht package but it actually uses Python library to read data from DHT sensors and I want to avoid using it.
There is dht11.dtbo overlay (firmware/boot/overlays/dht11.dtbo at master · raspberrypi/firmware · GitHub) which works well with DHT22 and DHT11 sensors. It saves data in
/sys/bus/iio/devices/iio:device0/in_temp_input
but it seems Nerves does not support it.
Namely when I connect sensor and enable this overlay in Raspbian everything works fine but when I do the same in Nerves iio folder does not appear.
Does Nerves support this overlay?
Where Next?
Trending in Questions
Other Trending Topics
Latest Nerves Threads
Latest on Elixir Forum
Sponsor Spotlight
Deploy Phoenix to your own VPS with PaaS ease: push-to-deploy, zero downtime, auto SSL, managed Postgres. 14-day free trial at potions.io
Categories:
Sub Categories:
Forums
Popular Tags
- #ecto
- #liveview
- #troubleshooting
- #learning-elixir
- #library
- #deployment
- #erlang
- #testing
- #genserver
- #mix
- #absinthe
- #remote-other
- #otp
- #plug
- #how-to-question
- #macros
- #postgres
- #elixirconf
- #channels
- #exunit
- #discussion
- #code-sync
- #podcasts
- #javascript
- #onsite
- #dialyzer
- #docker
- #authentication
- #umbrella
- #full-time-contract
- #podcasts-by-brainlid
- #ecto-query
- #ai
- #elixirconf-us
- #blog-post
- #elixir-ls
- #phoenix_html
- #iex
- #graphql
- #genstage
- #websockets
- #supervisor
- #advent-of-code
- #distillery
- #processes
- #api
- #forms
- #hex
- #security
- #metaprogramming
Our Sponsors
Build Elixir applications with speed and confidence.
Supporting innovation across the BEAM ecosystem.
Catch errors, track performance, monitor hosts and more.
Error tracking, logs, uptime, and Just Enough APM. Built for developers.
Elixir, Erlang & BEAM conferences from Code Sync - join us in 2026!
Master modern tools, write cleaner code, and tackle real-world challenges.
Producing high quality Elixir screencasts since 2017.
The deployment platform built for Elixir: PaaS ease, VPS control.
The team behind Membrane, Popcorn, LiveDebugger. Available for hire.
Courses that'll move you from confusion to "Aha, now I get it!"
Most Liked- Show Best Posts
- Show All (oldest first)
- Show All (newest first)
bosko
In case anybody needs it solution is to create custom Nerves system with additional two lines in
linux-4.19.defconfigfile:and adding
dht11overlay inconfig.txtandfwup.conffiles.