Hi all,
I’m doing an experiment with a cabinet for filament with a small dehumidifier in it. I can get it to sit at 35%, but not much lower. I’ve sealed the cabinet with foam tape, and dried most of the filament first.
Are there any tricks to help improve performance of the mini dehumidifier? Maybe adding more heat to the cabinet?
The goal would be to use Home Assistant and the humidity sensor to turn things on and off as needed.
Thanks!


Are you sure it’s 35% ? I’ve found those cheap digital hygrometers to be off by 10-15%.
I bought a box and some say 10 and some say 20. I ended up buying several different brands and price ranges of hygrometers to try and figure out which ones were correct.
I use cereal boxes with desiccant and without any active dehumidifier they stay at ~25% despite being frequently opened and closed. So like others suggested, put a large flow-through bin of desiccant in and forget about it.
Also is that a compressor dehumidifier? I suspect it’s a desiccant wheel because it’s so tiny.
It’s a compressor, which is probably the problem. I’m using a DH11 on ESPHome, so am pretty confident of the accuracy, it’s down in the bottom center of the cabinet. (I designed these https://nowsci.com/only-sensor)
Edit: Also, what do you mean by flow-through?
Re: flow through
A mesh like container so all sides are exposed to air. Many 3d printed designs have channels so air can get into the middle of the desiccant container.
Ahh thanks. Also, as a correction, this thing may be a crappy peltier dehumidifier.