In the Youtube video, you can see the fully functional drum coffee roasting machine which I built in my own garage. This coffee roasting machine is an effort to reconstruct the traditional drum coffee roasting machine using the simplest method and concept. I have pushed the limit of this machine and successfully roasted maximum of 1.2kg of green beans.

The machine can be separated into these components:

Cooling tray Chaff collector and exhaust Gas burner Platform and motor Thermocouples w Arduino Inner drum Main roaster body

Each step will have the shopping list for each components. Details of the construction will be in each photo, and important point will be pointed out as comment inside each photo. Please go through each and everyone of them to make sure you have a full picture of the construction of this coffee roaster.

The tools I used are all very common tools you can find in any garage, only special tool I purchased just for this project is the Dremel 200.

General list of tools I used:

Dremel 200 Glue gun Sheet metal hand cutter Plyer Screw driver Allen keys (of various size) Soldering iron (just to make the TC4lite PCB) Masking tape Aluminium tape Kapton tape Metal saw Wood saw

The whole project took me roughly 6 months with more hours spent during weekends. This is the third version I made as I need the lessons from the previous 2 to make this a success. I hope you could leverage from my experience and be successful on the first time, but even if you are not, remember this isn't my first either.

Let's begin and all the best!