Prebuilt Source code for nodemcu v3, sds011 and dht11 or dht22

My son built this at school but the temperature sensor never worked and he lost interest so now I am trying to get it working. It is a NODEMCU v3m, an SDS011 PM sensor and either a DHT11 or DHT22 (I have both).
I do not have the source code or even know what IDE he used. Also, when I look at the config I see that its possible to select DHT22 but not DHT11?
Anyway, is there anywhere I can download prebuilt source code for this configuration (showing what pins are used for what)?
Also what IDE to use’? LUA? I tried arduino to add the temp sensor but it kept throwing up errors
any help appreciated
thanks

Hello,

you can find all informations at Sensor Community
The flashing mentioned there will install a prebuild firmware.
The source code of our firmware is available at sensors-software/airrohr-firmware at master · opendata-stuttgart/sensors-software · GitHub. We use platform.io for development.
The DHT temperature/humidity sensors are using a one wire protocol that seems to be very time critical. Thats why there is only support for the DHT22 with a fixed copy of a working Arduino library for this type.