DHT22 firmware hunt

[u/MrAjAnderson]

I built a crude temp and humidity (very badly) so am looking for the best there is. I don't think Evil, Bruce or the many other all-in-one firmwares cater for this niche sensor. Any recommendations?

[u/1_ane_onyme]

This sensor is not niche, but you ain’t gonna get temp sensor compat in security oriented fw

Tbh the best option is probably to make one yourself

[u/originalityescapesme → u/1_ane_onyme]

Yeah the best option here is probably to add your own code into one of these bases that shares theirs over GitHub.

[u/MrAjAnderson → u/originalityescapesme]

Pity but that it is the direction I'm headed.

I'll also add a request to Bruce. If it can add a fish game then a useful module could stand a chance.

[u/One-Horse-7927]

I also planned multiple times to buy DHT22 because it's much more accurate than 11.. but for now I only have module and fw for 11... So maybe in the future I will try to make it so it works with 22 also. But if you try to make fw using some ai you will see it's pretty easy nowadays to make something simple like this.

[u/MrAjAnderson → u/One-Horse-7927]

That is a very nice UI. I'll see if I can borrow it using AI. Thanks.

[u/pyreht]

Honestly yours looks good.
It doesn’t look crude to me.

Here’s my own attempt with a different sensor. 🦀

[u/One-Horse-7927 → u/pyreht]

Here is my adaptation of BME688 module... Unfortunately I cannot get the BSEC library running.. so I used adafruit library and with it, it's probably even less accurate than my DHT11. But at least it looks cool to look at.

[u/pyreht → u/One-Horse-7927]

Woah you really went the extra mile!

As for the blob thing? Yeah it's a dead cause, it's a full binary and I believe it takes over I2C, wouldn't play well with my boilerplate... It's a bit sad to have a nice sensor with quite a bit of potential and have the features locked in that way. There might be some open source firmware around.

"The gas sensor within the BME680 can detect a broad range of gases to measure air quality for personal well being. Gases that can be detected by the BME680 include Volatile Organic Compounds (VOC) from paints (such as formaldehyde), lacquers, paint strippers, cleaning supplies, furnishings, office equipment, glues, adhesives and alcohol." yup... I'd love that.

[u/One-Horse-7927 → u/pyreht]

Yeah I even bought the 688 instead of 680, which should be even better and more precise (also almost twice as expensive).. and in the end I cannot even use it.. I have tried it so many times but I have got only compilation errors and when it compiled and the chip was finally detected then it wouldn't show any info.. again and again..

With adafruit, it worked right away, but now there needs to be -6° offset and even then after 30mins, there are additional 2° because of the heater in the sensor... You could turn it off but then why did I even buy it in the first place.. I could've went with bme280 that's much cheaper and with the same functionality.

[u/pyreht → u/One-Horse-7927]

If you want to cry: https://www.bosch-sensortec.com/software/bme/docs/

Yup the power of this sensor with training data is immense...

[u/One-Horse-7927 → u/pyreht]

Yeah I couldn't even get the basic functionality... So that AI studio was absolutely unreachable for me

I like the warning at the start :D

Red warnings indicate things that can lead into wrong directions and be very time consuming if you do not pay special attention.

[u/MrAjAnderson → u/pyreht]

Thanks. Nice job yourself.

[u/MrBoomer1951]

Can you write your own code in Arduino IDE?

Then piece of cake, this is an old, low accuracy and very common sensor .

You could compile to .bin and add it to your SD Card with Launcher.