New ROASTED video by Gábor Laczkó and Zéczi Attila

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Tiny Cheap Fluid Bed Roaster by Tije and Jan

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(also see Daily Coffee News feature ) Tije designed and made the following structure for a tiny and cheap fluid bed roaster, to which Jan van der Weel added the Arduino parts, electronics and programming: Sketch by Tije de Jong Jan sourced a very cheap blower (€ 11) to start with, Tije developed and constructed the mechanics, Jan built together and programmed the TC4 / SSR electronics.  On his blog, Jan will specify exactly how the TC4 part is combined and programmed and I will copy these details into this blog entry, just as Jan will use this video in his blog. We did a few test roasts to make sure it works at all and it does. Towards the end, the first roast tended to get a flat BT line and airflow was slightly decreased. 200g seems max load of green beans. Second roast a little more power was given to the heater. Next we will try the Background Roast driven by the PID software of Artisan. A week later, with updated software that works better to change the...
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Different vacuum breaker on LONDINIUM I

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Peter van der Weerd had an alternative for my original vacuum breaker. The (tiny bit of) water and steam that comes out at the start of the day is now released into the drip tray. The way it was originally done was no problem since the little amount of water coming out evaporates quickly, but my machine has glass side panels and they would get steamy opaque at the start of the day. Now they stay dry. Unscrewing the original anti-vac:  The original is out: The new one ready to install: Almost in: Tight enough: The little silicon hose that I have used before when I briefly had a Non-Return Valve is now used and it connects the anti-vac with the nipple I have on the front of the machine: The nipple. When the machine starts up, this is where the "prrrr....shshshsh.... flop" sound and moisture comes out.
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When to change the Brita cartridge?

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100% to 0% The Rocket Giotto espresso machine at my girl friend's place uses water from a Brita filter . This filter has a timer that counts down from "100%" to zero over a number of weeks but that time span is totally unrelated to the actual use of the filter so it's useless as a reminder to change the filter cartridge for a fresh one. Unpredictable I reset the timer a few times before replacing the filter but then I mostly forget how often I have reset it and I take out a new cartridge when I start to feel worried about the water hardness, which is subjective and unpredictable. Brita themselves suggest replacing it every two months or after every 40 gallons of water taken from the pitcher although local water hardness may vary greatly and thus influence the life span of a filter cartridge. So that's not a great help either. It would be nice if Brita supplied a test kit to see when the water quality delivered by the filter is deteriorating. Predicting ...
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