Home Built Coffee Roaster Build

[@kulemax53video]

Arduino aficionado here, well explained and I appreciate the mode of exploration thru trial and error that any project like this offers... and how it helps develop patience! Well done. I grow my own coffee here in Costa Rica and have been toying with DIY roaster possibilities.... cheers!

[@sotirigeorgas7281]

I knight you ! Sir Alex Campbell. Friking brilliant. I wish you were my neighbour. This would have to be the rolls royce of DIY coffee roasters. Best one I’ve see thus far. Well done.

[@d.brentharsh184]

So! Awesome! I've been roasting with a Presto for about a year and within a month of starting that I've been dreaming about adding probes and controllers and connecting it to a logger of some sort. And then I had a laundry dryer die and so I saved the 5500W heating element from that, and had bigger dreams. This is *exactly* what I'd been hoping to do ... just "someday". Congrats on a beautiful project and executing it so successfully!

[@Hurtcules]

Tremendous project! As one who enjoys arduinos, i'm very impressed with your multi skilled efforts for this job. The design is on point, and so is your presentation.

[@vdaze]

So neat! There are so many different layers to this project, as you said, from design and build to electronics and software! Neat!

[@62shalaka]

Great video. Very nice roaster. I built one about 4 or 5 years ago. It's all manual control, so much simpler, using propane heat and a blower controlled by a Variac variable transformer. The roast chamber is 4 inch metal conduit with the zinc plating removed. There's a borosilicate window in the side of the roast chamber. The chamber can be lifted off the heater and dumped into an electric bean cooler. The blower I use is a triple stage, 120VAC vacuum motor, using the discharge side. A normal roast is 26 ounces (737 grams) although it can roast up to 32 ounces. Your roaster is much more complex than mine. But I enjoy the manual aspect of roasting!

[@darryltaylor9282]

Very nice work. I am most impressed by your approach to chaff collection. You have inspired me to attempt a propane heated version.

[@ronaldschild157]

Holy crap-snacks! This project is so many levels of awesome! You sound like you have an engineering background, but even with that you needed to learn these various skills for building the unit. For someone learning TIG welding on their own (with some KZbinrs' help), the results you have to show are impeccable. What an outstanding and inspiring achievement!

[@theagenereux]

Impressive diy roaster. 👏 deseve more recognition cause you spend plenty of time and knowledge in this project

[@kelgale8530]

Alex, this is exceptionally well made and described. I’ve been mulling over options and this is exactly the inspiration I needed to get my show on the road. Thanks for tackling this project and documenting your challenges 🤙🏽 Big ups from Australia

[@randyprickett4422]

As a fabricator of many projects, the thought and planning that went into this , is amazing! Thanks for posting your build.

[@javi117e6]

This is truly amazing! I’m glad I found this video. Great job on your explanations of your designs!

[@ScottsGuitars]

Fantastic design / build and the presentation was outstanding as well.

[@jaimevaldez3058]

very nice video. well presented. look forward to a deeper dive into your controls for a “next video”

[@timstephenson6923]

You are my hero. I tried to build one of these with a heat gun (way underpowered - air and heat). YOU did it right!

[@brett9097]

Excellent video. Really nice job explaining what and how it does. Very clear explanation and a really nice roaster

[@JohnClulow]

Great project and results, and very well presented in your video ! I had a remarkably similar progression of experiences in building a couple roasters, like you starting with a computer controlled popcorn popper and ending up with one that does 300 gm batches which is fine for my needs. I think perhaps the best part is all of the learning that occurred to reach the goal ultimately and that is clearly evident in your video. Kudos for a great project and presentation !

[@thedongarry]

Wonderful video. Very well presented and the product is AWESOME. Thank you so much for not having a stupid musical soundtrack. Maybe I'm just a prick but I would have passed up you video. I give it a five. I loved it

[@GODsSPECTRE]

I agree with cleaning this up a lil bit and develop into a product. I want to buy this now

[@angeloc700]

I want to be invited to coffee at your house! Nice work!!

[@jamesmilward4916]

This is so great, you should develop this as a product and go in to business.

[@teelakkhananukun283]

Nice work! Would be very helpful if you write up series of tutorials. Anyway, it's really inspiring

[@gabriellajust3709]

Wow!!!!! This is amazing!!! Thank you for sharing!!

[@alejandroahumada2359]

Hi alex! greeting from mexico, awesome proyect.

[@cerlin9392]

Are you going to post your plans for the machine?

[@v2c2s]

Excellent project! Congratulations! I am too in the process of making my own arduino controlled fluid bed roaster, but I am in the poproaster phase though.

[@ratbagley]

This is brilliant. Thanks for posting.

[@womanofsteel8948]

Yeah your coffee roaster is excellent I want to build one just like that I roast my coffee and a 16 inch pipe cap believe it or not I can roast a lot of coffee but it makes an awful lot of smoke but the rose profiles good yeah I think I’m going to build one of these excellent job

[@jowag]

Have you considered adding a tvoc sensor near the exhaust? I was watching a facinating video that talked about the corrilation between first crack and dramatic spike in tvoc when fan is constant as a great indicator. Could be a great data point to help in measuring given the air noise

[@limitlessspodcast]

awesome work, i have another start up coffee roaster and distributor company. we will love to have the commercial version of it

[@evindrews]

beautiful. fantastic job

[@chrisrowell4732]

Hey Alex! Just saw this video! When I'm back in Calgary we should catch up and collaborate on a project! I knew you where into coffee but not this much so! Cheers for your old kccf friend chris

[@mfmeow206]

This is awesome. I like that your first roaster still has the half peeled thrift store sticker on it. I am currently using an old popcorn maker but looking to move to something more advanced. I understand yours has quite a bit of fabrication involved, but would you be able to share a parts list of some of those store purchasable components? I like the idea of sticking to air vs building a drum roaster. Thanks for this video.

[@azgardener79]

Great job!!

[@vex123]

Wow this is amazing work!

[@akquicksilver]

Awesome, good on you!

[@palefire]

Wonderful work, presented very well also. Thanks!

[@stevestadinko6045]

You sir, don't f around. We'll done. 🙏👏👏👏👏

[@shanewilson2152]

Great work

[@oldcrust4741]

Outstanding!

[@mmortada1978]

Nice work bro 👏💪

[@gregbeers9423]

Very nice and informative. Do you sell them yet?

[@imKajsa-ns2ib]

very nice design! how quickly do the beans cool in the chamber after you turn off the heat?

[@BensCoffeeRants]

Awesome. I want one.

[@germanrodrigovidal5938]

Hi, really nice coffee roaster!. I'm trying to make my own at home. Could you please tell me the dimensions of the glass cylinder and also of the valve you used to discharge the beans? Were the beans ever stuck when discharging?. Many thanks for your answer

[@brianpeterson9342]

Brilliant. Now a good medium roast is repeatable.

[@Anarchsis]

Hi Alex, I love your machine. What I’d like to know is how you have put the heating element into the plenum and how far from the beans it sits? You’ve inspired me to try and build my own but I’m not as savvy with design, electrics or building. Cheers from Australia.

[@alaskavaper966]

Bravo! Hopefully there will be more videos if you are still engaged in controlling all aspects of making the best coffee from the many wonderful bean varieties available.

[@mikejason3822]

Amazing!

[@orangejuli07]

Very impressive

[@AndrewWadeNZ]

Very impressive. Well done. I'd love to build something like this. Would you consider packaging the plans for sale?

[@timdaviszaper]

Very nice

[@magee26]

Pretty much 100% ..... 99.9% ;) Fantastic build!

[@jimmykhoo9693]

Hi Alex At about 6:05 , there are two perforated plate which are meant for the bottom cone. Top left has less holes while the other one has more holes. May I know why are there two plates and how are they arranged in the built? And what is the diameter of the chamber? Thanks in advance.

[@ViceChief]

Hi Alex, where/how do you load the beans into the roaster?

[@chahahc]

Good lawd a cyclonic chaff separator

[@StorieswithJose]

Are you taking orders to get one done? I would love to order one.

[@benmoran-whitaker2805]

Awesome roaster! I'd suggest changing your thumbnail, as the current one doesn't show how amazing your project is.

[@alejandrotaudil3689]

Awesome!!

[@thedesertfathers]

Brilliant!

[@davebruwer7870]

Amazing project! I have been meaning to do this for a while now. Was the popcorn popper powerful enough? I am currently using a popcorn popper to roast approximately 50g of beans at a time and it seems to struggle in winter. I thought about buying a cheap heat gun and using that as the heat and fan source, just hope the fan will be strong enough.

[@edrunyon9847]

Thanks for the vid Alex! Considering my own personal build. Would you have any links to websites or resources I should check out?

[@Presso99]

would you be able to show us the design of the heating elements in a separate video?

[@williamdyson2205]

Hi Alex, Great work. You inspired me to build my own roaster and I am curious to know the brand, model and source of your air pump. Thank you in advance for your help.

[@1986carlosleon]

nice roaster, lot of effort on it, looks awesome. thanks for sharing. how did you fit the glass with the steel base?

[@jdavid18]

Beautiful DIY roaster.. Well done !!! Is the plastic welding element food grade? Probably the air passing trough this very hot element gets plastic micro particles or other chemicals that get into the coffee beans. I wanted to have this coffee roaster for my coffee production in Colombia.

[@eltakeiteasy]

This looks great! I would love to make something similar. Do you have plans for your new one already thought out?

[@tonup80]

Bravo!

[@evanwilliams3473]

How did you hook up the heating element? Mine burns out after a minute or two?

[@sitiesito715]

I'm interested in building something like this, but I'm a little lost as to where to start. I guess I would like a deeper understanding of the details of the fluid bed roaster design, and I have a long way to go in my metal working / mechanical skills. I've programmed microcontrollers before so that part isn't as daunting. Where can I find materials to help me brush up on what I'm missing? Also is there a good forum for this kind of project?

[@DougPowell01]

How about automating the fan speed by putting LED light beams at varying heights and outside the glass envelope? Yes, you would have to keep the glass clean. Alternatively, instead of a beam, use a photo cell to try and monitor bean height in the cylinder with ambient light shining from above. In either case, the way the beans bounce in the cylinder, you may need to integrate the feedback somewhat to avoid rapid changes to fan control voltages.

[@beyamoth]

What are the specs of the blower?

[@fuchin1980]

Hello, Alex, do you shore the diagram for DIY?

[@Stevesbe]

After having a real drum roaster the coffee does taste better compared to fluid bed roasting 😊

[@hussamka]

In case you want to build bigger roaster. I am ready to buy this one.

[@thammara]

Hmm. Sounds expensive but fun!

[@phayratanak4948]

Hello , Can I know how to connect from thermocouple with arduino to collect data to computer?

[@cyberst0rm]

Hi, I read in the homeroasters thread that you has some issues with the CJC done by MAX31855. How did you solve it? Stunning project, I am really impressed.

[@bird27kimo]

how cost all it is?

[@trailwander5878]

Hello Alex, Well done on this video. As an espresso lover myself, I like what you have done. With your project did you consider using a Raspberry Pi with the GPIO and sc2 to control? Working with both the Arduino and Raspberry there are many ways to go. Did you source your Arduino code from Github or, is your code available on GitHub? Many thanks from a fellow Canadian

[@Stevesbe]

That's pretty awesome How do you have that much time to create something like this?

[@shufenhis]

Hi Alex, Greetings from Taiwan! I just wanted to start by letting you know that I really enjoy your videos and I'm trying to build a coffee roasting machine based on your design. I had a couple of questions that I was hoping you could help me with, if that's okay. Firstly, for your blower motor and heater, do you have any advice for how to connect the two parts together? In the video I can't tell if the air is blown through the steel pipes and then heated, or if it is heated through the welder before being blown through the steel pipes. If you had a design plan I would really appreciate being able to take a quick look at them. Secondly, do you power the blower and 3400W plastic welder independently? Sorry if this is a basic question but I've never attempted a project like this before. Thank you so much. Thanks once again for your videos. Have a great day! Sincerely, Shu Fen

[@mikewhitmore7860]

Hi Alex. Is there a schematic and wiring diagram that you would have put together for this machine? Thanks Mike

[@alexcampbell492]

Hi Mike, the schematic is the stock setup as suggested on the Roastlogger manual

[@fedsal11]

@@alexcampbell492 Where I can to buy this equipment?

[@calebmacon2113]

Where did you buy the chaff collector? Or did you make it? I would like to buy it

[@alexcampbell492]

The cyclone is fabricated

[@Mustash-Tony]

What happened to this guy? I'd love to see more. Any progress on 2.0 version?

[@alexcampbell492]

No version 2 yet, but I am working on some designs.

[@actualidadagropecuaria8841]

Donde puedo comprar este equipo

[@lukefasullo3483]

Hi Alex, Love the machine! Do you have an email that I cant contact you at? Have a few questions about building a roaster. Thanks

[@elephantcup]

"Chafe" is what happens to your nuts when you're really sweaty. It results in a rash. "Chaff" is the outer coating of seeds and grains. See: "Separate the wheat from the chaff".

[@rainandjarreyn3301]

Sir, gd am, how much do you sell that kind of roaster?

[@frankfan2763]

Hi Alex! Amazing project! I am looking to build a 250-500g fluid bed and I think this design of your would be great. Do you have a contact that I can contact to ask you some questions?:D

[@ffre4k]

Burping makes the roast uneven, instead of making many small holes, make one bigger on the side (i use 1" for 1kg load), you will see huge improvement.

[@ishaanpfeiler477]

Hey mate, I'm building a coffee roaster inspired from your one for my final year project at uni and I've got a few questions, could i possibly get your contact? It would help me tremendously ! Cheers

[@violentdesire7325]

How did the project work out? if ya have blueprints or anything to share, please do. Bioengineer here, i dont really do much construction apart from cad and 3d printing, so any help would be great:)

[@DarkArtsCoffee]

🔥🔥

[@davidgreenfield3690]

nice

[@bartyco]

Hey Alex, love the roaster, would you be interested in building another on a commissioned project? Thanks, speak soon.

[@BlaineShillington]

Do you know what your CFM on your fan is running at and how many lbs can you roast? Guessing your CFM is around 25 cfm based on your heating element? Very nice setup and construction!

[@alexcampbell492]

Don't know how many CFM

[@amermohamed3503]

S'il vous plaît est qu'il y a Une machine plus grand merci pour votre travail

[@TitanTheImpailer]

Hey man I'm from Edmonton too can you help me make one of these its for someones birthday

[@twochaudiomg2578]

I've seen enough you are a GMC engineer i think no way i can do

[@gustavarium]

Hello Alex, I might be late to the party but I gotta say this seems very impressive! I am curious about a couple of elements on your project. Hit me up if we could exchange some emails!