psko
February 4, 2024, 11:33pm
1
Formaldehyde (HCHO) is being measured by some devices (like Plantower PMS5003ST) and it would be nice to have this device type add to: https://github.com/home-assistant/core/blob/3abc48b7c1444611f7b9c173b4d4959f29fae7a9/homeassistant/components/sensor/const.py HCHO there should be a place
For an icon I’ve already requested it here:
opened 11:17PM - 04 Feb 24 UTC
Icon Request
### Before submitting a new icon request, please confirm the following:
- [X] I… have [searched all issues](https://github.com/Templarian/MaterialDesign/issues?q=is%3Aissue) to make sure there isn't a request for this icon.
- [X] I have [searched the current library](https://pictogrammers.com/library/mdi) to make sure the icon doesn't already exist.
- [X] I understand that [brand icons are no longer being added](https://pictogrammers.com/docs/library/mdi/guides/brand-icons/) and I can use [SimpleIcons](https://simpleicons.org/) for my brand icon needs.
- [X] I only intend to request a single icon (or a few near-identical ones) in this issue.
### What would you use this icon for?
For Air Quality sensors for HCHO (formaldehyd) readings.
It could be used together with other Air Quality readings like PM 1.0 PM 2.5, PM 10 (#7273), NOx and VOCs (#7216) especially that some sensors provide PM reading and HCHO (Plantower PMS5003ST).
A lot of people are tracking now such information on their Home Assistant and other similar.
### Give us an example of what this icon might look like.
The icon should be consistent with design of NOx, VOCs, however for HCHO it could resemble its molecular structure, see: [wiki icon](https://upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Structural_formula_of_formaldehyde.svg/120px-Structural_formula_of_formaldehyde.svg.png)
Unit of measurement is “μg/m³”, the same as for PM 1, 2.5 & 10.
valshaq
December 6, 2024, 6:12pm
2
Just a heads up, there seem to be many sensors spitting out values for HCHO without really measuring it. If you look at prices of modules that are specialized in measuring formaldehyde, like e.g. SFA30 Formaldehyde Sensor Module - Sensirion | Mouser and compare some offerings on Amazon et. al you gain the impression that many modules measure VCOs in total or even calculate other values depending on level of CO²/ PPM of fine particles.
