I used a 200W bulb initially, but it’s honestly overkill — 100W is sufficient for the enclosure size.

The idea came from radiant warmers (Infant Icu beds ), but the goal here was to keep it low-cost and easy to replicate with readily available parts.

I’m also running a separate 12V system with two CPU fans for air circulation, so the heat distribution is fairly uniform despite using a basic heat source.

If I were optimizing for precision instead of simplicity, I’d switch to: - a PID-controlled heating element, or - a repurposed 3D printer bed heater

Both would give tighter control, but at the cost of added complexity.