Planet Arduino

How far would you go for your cup of tea? [samsungite]’s missus doesn’t like clutter on her countertops, so away the one-cup kettle would go back into the cupboard for next time while the tea steeped. As long as there’s room for it in there, why not install it there permanently? That’s the idea behind RoboTray, which would only be cooler if it could be plumbed somehow.

RoboTray went through a few iterations, most importantly the switch from 6mm MDF to 4 mm aluminum plate. A transformer acts as a current sensor, and when the kettle is powered on, the tray first advances forward 7 cm using a 12 VDC motor and an Arduino. Then it pivots 90° on a lazy Susan driven by another 12 VDC motor. The kettle is smart enough to turn itself off when finished, and the Arduino senses this and reverses all the steps after a ten-second warning period. Check it out in action after the break.

If [samsungite] has any more Arduinos lying around, he might appreciate this tea inventory tracker.

Prolific project maker and Arduino lover Alain Mauer has made a rather splendid tea maker project with a steampunk twist. Despite Mauer being based in Luxemburg, we’d have to say this feels like a very British Arduino application.

Crumpets or Battenburg, anyone?

Putting the “Tea” in “Steampunk”

The Tea Timer is a classic Arduino project. A simple idea with a simple execution, beautifully presented.

Mauer’s put together a timer that submerges a teabag for a preset period. We all have our preferences for the strength of tea, and everyone knows an entire day can be ruined if the teabag’s left in for too long (right?). So a five-stage timer lets you determine just how strong your tea will be.

Once the timer’s run down, an Arduino Nano fires up the servo, which turns the gears and lifts the bag out so you don’t forget. Adjusted correctly, this also means you can consistently make the perfect cup of brown joy.

And just like the perfect cuppa, presentation is everything. Mauer didn’t need to add the gears, wooden housing or the brass finish. But the steampunk aesthetic really completes the project, and makes it into a work of art as well as an essential kitchen appliance. Now we just need to hook it up to a home automation system.

Mauer has provided all the CAD parts on his GitHub along with the Arduino code, so it’s easy to replicate.

Tea is a subject of great significance to the British. It can cause arguments, hysteria and family feuds that last for generations. All in a very civilized manner, of course. No Brit would be uncouth enough to have cross words in public about the proper way to drink tea. But we do reserve the right to tut and roll our eyes behind closed doors afterwards, should someone get it wrong.

Check out the steampunk Tea Timer and automatic teabag remover on Mauer’s blog. And let’s leave the last word on the vital importance of a cup o’ brown joy to the immortal Professor Elemental.

The post A splendid steampunk tea maker appeared first on Arduino Blog.

Americans love their coffee. The Brits adore their tea. In South America, the number one way to get through the day is with yerba mate, a tea made from the yerba plant. It is typically shared in a social setting, with one person preparing the beverage for everyone to enjoy. Although caffeine certainly deserves a ceremony, it never needs one. Hit the streets and you’ll see people everywhere with a thermos under one arm, keeping water hot and ready to refill the cup of mate in their hand.

The Stanley vacuum thermos is quite a popular choice for drinkers on the go, but the Argentinian government recently placed new restrictions foreign imports. [Roni Bandini] decided to build a minimum viable mate machine so he always has perfectly hot water on tap.

An Arduino Nano heats the water and displays the rising temperature on an LCD screen. When the temperature is just right, the display asks for your cup. An ultrasonic sensor detects the cup and dispenses a certain amount of water determined in the sketch. Yerba leaves can be used a few times before losing their flavor, so the machine keeps track and lets him know when it’s time to replace them. You can sip on a brief demo after the break.

Let’s say you don’t have perfectly-prepared mate, and it always comes out too hot. That’s better than too cold, but still not ideal. Why not make a temperature-sensing coaster that alerts you when it has cooled to perfection?

In the movie Wall-E, future humans live in floating chairs and have everything done for them. Today, we grumble if we have to go to physically find a light switch or a remote control. How far away can floating chairs with screens be? T2, the Tea Bot, gets us one step closer to that. Using a laser-cut frame, an ESP8266, and a servo motor, the T2 brews your tea for exactly the right amount of time.

We were kind of hoping the robot would at least dunk the tea bag in and out, but it does provide a web interface that lets you select the brew. Of course, the code is available, so you could make modifications — maybe turn on a hotplate underneath the cup.

While this isn’t particularly practical for most people, it is a nice short example of how to provide a web interface and do something with an ESP8266. Maybe you want to lock a desk drawer or put a marshmallow into a flame, for those tasks you could use very similar code.

Since a servo takes a pulse width and draws very little current, you could probably drive a bunch of them and parallel process a lot of teacups if you were serving a crowd. Naturally, this isn’t the first automated brewer we’ve seen. It isn’t even the only one with a servo.

I’m surprised that I haven’t already seen a tea-brewing robot in an issue of Skymall, because I think it’s just the sort of luxury item that would really appeal to someone on their second or third bloody mary. Luckily, you can just go ahead a make yourself one in less […]

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