Reddit mentions of Inkbird Dual Stage DV 12V Digital Temperature Controller Fahrenheit Thermostat Heating and Cooling for Homebrewing Brew Fermenter Fridge Incubator Greenhouse

This is what i used for the heating pad although any size or type will work, some have embedded temp probes and 3M adhesive backing to make things a bit easier. Ebay has an awesome selection of silicone heating pads. This temp controller works very well for the money and wiring is very easy, however pad wattage must be kept under 120w for this controller as the internal relay can only handle 10A. Edit: I do want to add that power supply for a low wattage pad like the one listed can be from any 12v @ 2a household power brick with the end cut off, however higher wattage pads may require a higher powered 12v psu. If you use higher powered silicone heating pads it's better to go 110v due to amp requirements at 12v. My solution above is just the entry lvl budget version. If you wanted to, you can go full in with a PID temp controller, high amp PSU and high quality heating pad with internal thermometer to achieve pinpoint temps but something simple like heating a glass syringe really doesn't need that. I wrapped the pad around my syringe, tucked the temp probe included with the controller in the wrapped roll and gave it a good once over with duck tape. The syringe slides in and out like a sleeve to use it for different things like filtering and when i need it heated you just slide it back in your homemade sleeve and your good to go.

The adventure of /u/BrewsterC continues. So I ended up buying one of these bad boys to create a more consistent environment to ferment my wort, along with this temperature controller. I feel like I am missing something to make this happen. I'm no expert at electrical engineering by any means. Could someone point me in the direction of a modern guide of how to convert a chest freezer into a fermentation chamber?

Thanks fellow Bro-wers.

If it's for the enclosure you probably don't want to run it off the control board, then. What would be the purpose?

You need to control the enclosure's temp separate from what's going on for print cooling. You need something like this to do that and then you can mount it inside your enclosure with something like this thing. That way you can set your enclosure temperature independent of your control board and draw as many amps as you need without worrying about blowing out a mosfet on your controller.