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Door open timer switch thingymajig
zpyder:
Heh, I think temp changes are what are throwing my air sensors off. Get everything stable and take it outside and it instantly reads a different value. Not because there's H2S in the air, but because its gone from 20 degrees to 10.
Will probably need to build in temperature compensation but not all the sensors data sheets provide temperature offset info.
Also, have you noticed how hostile the Arduino forums are? I've never seen anything like it. Literally all questions have to be written in such a detailed way that takes way too long to do or they descend en masse to have a go at the poster.
And on the rare occasion they're polite, inevitably they start bickering amongst themselves.
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zpyder:
--- Quote from: knighty on September 14, 2021, 21:49:03 PM ---a fan should make a a massive difference...
you'll defiantly have a dryer area around the silica and a wetter area around the stuff being dried
--- End quote ---
Turned out the air in the silica tray was about 3-4%. And at the top of the cabinet would be about 30%
The fan helps even things out. Also interesting to see the silica colour is noticeably changing by the end of the day so it's obviously doing more drying than it did pre-fan.
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XEntity:
--- Quote from: zpyder on October 05, 2021, 09:33:40 AM ---Heh, I think temp changes are what are throwing my air sensors off. Get everything stable and take it outside and it instantly reads a different value. Not because there's H2S in the air, but because its gone from 20 degrees to 10.
Will probably need to build in temperature compensation but not all the sensors data sheets provide temperature offset info.
Also, have you noticed how hostile the Arduino forums are? I've never seen anything like it. Literally all questions have to be written in such a detailed way that takes way too long to do or they descend en masse to have a go at the poster.
And on the rare occasion they're polite, inevitably they start bickering amongst themselves.
--- End quote ---
I've not been on there in a long time, mostly I manage to get more immediate answers by either googling or my question is about a specific repository where I'll generally raise a question to the dev via github or their discord etc.. Reddit can sometimes be useful too, the esp8266 group is pretty good..
knighty:
like Nige I don't have anything useful to add, but it looks good / glad it's working :-)
zpyder:
Thought I'd follow up on this thread. Since that initial project back last year, I've ended up making:
* A WiFi doorbell with unlimited range (using repeaters) to work as an intercom at work. Added benefit was the chime was the imperial march from Star Wars.
* A temperature and humidity sensor network around our house. Can view the data on my phone and it all gets logged to a Google sheet too, so is remotely accessible
* a similar sensor arrangement for work to track temperatures when our air con broke. Had to figure out how to get through our WPA WiFi security for that one!
* an octo alert buzzer box for my son. He's a massive fan of the show. So he presses the big button, and the octo alert sounds and flashes some LEDs. It also sends a trigger via IFTTT to turn our house smart lights red for a few seconds during the alert!
* another toy for when he was much smaller, had a few buttons that would turn LEDs on and off or play different tunes.
* a mothballed UV sensor (uv is super strong in NZ). Canned it as I needed to find some kind of fresnel lens that would transmit UV. Most are for visible or IR so wouldn't work.
*a mothballed air quality sensor that was going to monitor all sorts of parameters. Then I realised that the sensors are pretty basic and for any kind of meaningful result they'd need frequent calibration.
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