I have a 30x30cm wooden box and need to make the temperature

>>1024747
Insulate it.
Bubble wrap come to mind.

>>1024754
That won't make the temperature higher when there's no heat source inside, dumbass

>>1024755
Then put a heat source inside.

>>1024747
Buy a resistance wire, a computer fan, and a temperature sensor. LM35 for the lazy ppl, works decent out of the box. Choose a µC and build a regulator circuit. Remember to use high-power PSU.

>>1024747
Buy a zippo hand warmer.
Stick it in there, wrap your sliced off hooker tit box up real tight.
Open it every how ever many hours to replace fluid.

>Pic related?

>>1024747

MOAR!

>>1024775
First tell me how do I heat that goddamned thing without setting my house on fire

>>1024776
USB mug warmer

>>1024778
Great idea but I can't wait another week to order this shit

>>1024780
>>1024747
>>1024776
First of all, how do you have a two dimensional box?
Second why so desperate?
Third, why can't you let light in?
Most importantly, which temperature do you want to have in there?

You could put hot rocks in there, they would keep it warm for quite some time.

You could also put a laptop charger in there, that will also heat it up some what.

You could use some resistors from salvaged electronic as a load and have them heat the box..

>>1024780
Then go to a shop a pick one up

>>1024747
Try one of those heater strips they use in home brewing.

Silicone heater, 12V PSU, a knob, and some sort of control circuit to make sure it doesn't overheat or something and to measure temps.

heating pad for growing plants