Our little kitchen is crammed with cooking equipment and giant roaster, a huge EK43 grinder and a big espresso machine. A few months ago I bought a Londinium R lever machine. The machine is still unpacked but it will be installed in the coming days. The machine has a huge lever that makes the machine a bit taller than my previous La Marzocco GS3. I’m …
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Measuring the effect of the Londinium Distribution Tool
The recently launched Londinium Espresso Distribution Tool promises to reward you with a very high level of consistency to your espresso extractions. What is the effect of using the LDT? Does an espresso made with this tool taste better? Frans is doing a series of experiments of the tool in combination with different Compak Grinders. Blind tasting is a great way to measure the effect of …
Easy brew head cleaning with the Espazzola
The cleanness of your espresso machine will highly influence the cup quality. Dirty water from the brew head will lead to a dirty cup, it’s as simple as that. There several ways to clean the brew head. Methods include back flushing and cleaning with a stiff-bristled stick. Although important, I have to admit that these are not my favorite activities. Espazzola is a cleaning tool …
Water, the weakest link in espresso brewing?
I recently disconnected my Everpure Claris water filter because of a my house renovation. This left me with a problem. Where could I find filtered and softened water for my espresso machine? Luckily my friend Frans Goddijn helped me out. He supplied me with bottled water that was filtered with his BWT Bestmax premium water filter.
Tiny Cheap Fluid Bed Roaster update 8 Feb 2017
Tije de Jong made a first housing for the Tiny Cheap Fluid Bed Roaster. He also made a part that improves the movement of coffee beans inside the roast chamber. This improvement is not finished yet but it already makes a slightly larger batch size possible (310 vs 250 grams). Tije also made an addition to the chaff collector that prevents beans from escaping out …
Tiny Cheap Fluid Bed Roaster: New roasting chamber
Tije built a new roast chamber which allows a larger load to roast. The (free, donation supported) Artisan software reduces airflow as the beans get less heavy and the Artisan PID follows the designed background. See also https://github.com/artisan-roaster-scope/artisan This post was copy and pasted from Frans Goddijn’s blog.
Tiny cheap fluid bed: PID tuning
Yesterday we worked again on our Tiny Little fluid bed roaster. On the menu was to further configure the PID-settings. This should make it possible to precisely and consistently execute roast profiles. For our test we used again Indian Cherry Robusta. This cheap coffee produced lot’s of chaff during the roast. Although the roast results looked fine we don’t recommend anyone to drink the as a single …
Tiny cheap fluid bed: chaff collector and more testing
Last week we did some new tests with our DIY Tiny fluid bed roaster. There were two things to test. First we wanted to test the Chaff collector that was made by Tije. Secondly we wanted to configure the PID of the TC4/ Arduino to make it accurately execute pre defined roast profiles. Tije’s chaff collector During our previous tests the tiny fluid bed roaster …
Design a toy car in Fusion 360
3D Modeling is a very powerful technology for designing and prototyping products. I recently prototyped some espresso dosing funnels. For prototyping I used CAD program Solidworks. This did unfortunately not natively run on my Mac but I was able to run it in a virtual machine. This approach however did result into many crashes and sluggishness. To end my frustration I had to use a …
Tiny cheap fluid bed roaster update: background roast test
Yesterday we tested the “background roast” feature of the free Artisan software, with Artisan activating and regulating the heater in order to let the BT cruise along the pre-designed profile. Before our test we made a few improvements to the hard- and software configuration.
Tiny Fluid Bed Roaster update
(movie by Frans Goddijn) Last week we updated the Arduino software of our air roaster prototype. Tije fixed the new safety switch that I brought along. In case of software failure, you want to switch off the heater and keep the blower active in order to cool the beans and prevent overheating of the blower and heating element. The switch bypasses the relays that are …
3D printed espresso dosing funnel
Recently I wrote about a 3D printable espresso dosing funnel that I designed. Yesterday the print of the design was finished. I wanted to have a fully functional prototype, therefore I chose to print it in ABS. That printing material (‘filament’) can withstand up to 100 degrees celcius.