Coffee, making and hacking addictions are just bound to get out of control. So did [Rhys Goodwin’s] coffee maker hack. What started as a little restoration project of a second-hand coffee machine resulted in a complete upgrade to state of the art coffee brewing technology.
The Brasilia Lady comes with a 300 ml brass boiler, a pump and four buttons for power, coffee, hot water and steam. A 3-way AC solenoid valve, wired directly to the buttons, selects one of the three functions, while a temperamental bimetal switch keeps the boiler roughly between almost there and way too hot.
To reduce the temperature swing, [Rhys] decided to add a PID control loop, and on the way, an OLED display, too. He designed a little shield for the Arduino Nano, that interfaces with the present hardware through solid state relays. Two thermocouples measure the temperature of the boiler and group head while a thermal cut-off fuse protects the machine from overheating in case of a malfunction.
Also, the Lady’s makeup received a complete overhaul, starting with a fresh powder coating. A sealed enclosure along with a polished top panel for the OLED display were machined from aluminum. [Rhys] also added an external water tank that is connected to the machine through shiny, custom lathed tube fittings. Before the water enters the boiler, it passes through a custom preheater, to avoid cold water from entering the boiler directly. Not only does the result look fantastic, it also offers a lot more control over the temperature and the amount of water extracted, resulting in a perfect brew every time. Enjoy [Rhys’s] video where he explains his build:
Continue reading “Brasilia Espresso Machine PID Upgrade Brews Prefect Cup of Energy”
This is what your coffee looks like as it is being brewed. The three different art pieces seen above were generated based on data from different parts of a high-end coffee maker. This isn’t a bargain basement single switch drip maker (we reserve those for NES retrofits) but a top-of-the-line espresso machine. And before you cry foul we’ll warn you that the project is a marketing device for the manufacturer. But we still think it’s interesting so read on or jump directly to the video after the break.
We’re unsure if the sensors are normally included in the machine or if they were added during the hack. An Arduino pulls in data about the brew process from two flow meters, a steam indicator LED, and three thermistors. The measured values are sent to a Processing application which turns them into the generative art seen above. What results is a widescreen display that aims to turn your bleary-eyed wait for morning coffee into something interesting.
Continue reading “Data from your coffee maker turned into art”
Whether you take it as a single shot or a double, a great Barista want’s to know the details on what’s happening with the espresso machine. [Tobi] was happily generating the morning cup when he realized that the needle-thermometer on his machine wasn’t working any longer. Instead of shelling out a lot of money for a direct replacement, he built his own display and controller for this espresso machine (translated).
He had a few goals with this hack. Obviously he needed to replace the temperature meter, but he also wanted a colorful display and some timing options. He was able to get his hands on a nice little OLED display that would fit in the vacated opening and it only cost a few bucks. He’s got his own mini-mill which came in handy when fabricating a board to host the ATmega16 which drives add-on, but he also used it to make a bracket for the screen replacement.
Now his machine is fixed, looks a bit more modern, and it has more features which are shown off in the video after the break. If you’re looking to add some custom circuitry to your coffee ritual you may also take some inspiration from this similar espresso machine hack. Continue reading “Espresso upgrade gives you more data with your caffeine”
The heat sensor in [Cameron]’s espresso machine doesn’t work very well. He sees some pretty crazy variations in temperature when pulling an espresso shot, and when the boiler is just sitting there the heater element will heat the water full-bore then shut off for a while. Since this is a pretty low bar from a control theory standpoint, [Cameron] decided on a PID makeover on his espresso machine.
Instead of going with a commercial PID controller like we’ve seen on a few kitchen hacks, [Cameron] decided to roll his own Arduino derivative based on an ATMega328 microcontroller. The newly designed board reads the state of the ‘Steam’ button, a few relays for controlling the heater and the pump, and of course an LCD display.
[Cameron] still has to do a little tweaking to get his PID algorithm down, but already the new control board keeps a much more stable temperature than the old thermostat. The fancy new bezel and LCD display adds a lot of techy class to his espresso machine, to boot.
[Dino’s] latest weekly hack plays right into our Kitchen Hacks theme. He’s sharing some obscure tips and tricks involving eggs.
It should come as no surprise that he knows a thing or two about using eggs. After all, he keeps chickens and you’ve can’t just let good eggs go to waste. Which is where his first tip comes in. Eggs will keep for weeks, but if you don’t know if they’re still good you can put them in a bowl of water before cracking them. Eggs that float are on the way out!
Need some scrambled eggs but don’t have a pan to cook them in? His next feat is to cook up a breakfast of steamed eggs using the steamer nozzle on his espresso machine. It’s messy (egg seems to be flying everywhere) but the final product does look appetizing.
The rest of the video (embedded after the break) shows his methods of making Hollandaise sauce for Eggs Benedict, and how to blow the innards out of an egg-shell.
Now we have a picture in our minds that [Dino’s] daily routine is surrounded by eggs… like the egg farmers in Napoleon Dynamite.
Continue reading “Kitchen Hacks: [Dino’s] egg tricks”
For those of us that would like a good cup of coffee but don’t want to put up with the ‘burnt butt’ taste of Starbucks and don’t have a decent coffee shop nearby, we’ve had very few options. Most of us have been made to suffer with an el-cheapo espresso machine. [Joe] sent in a great build that improves these el-cheapo models and brings them up to the quality we would expect from their more expensive brethren.
For the best pull from an espresso machine, the great [Alton Brown] says 200° F water must be forced through the grind at around 10
PSI atm. [Joe]’s espresso machine can’t build up pressure because the heating element is only active when the lever is in the ‘brew’ or ‘froth’ position. To build up pressure in the water reservoir, [Joe] simply added a pressure gauge to the frothing attachment. When the gauge reads the necessary 10 atmospheres, just move the lever over to the ‘brew’ position and enjoy a nice cup of espresso.
[Joe] has already tested the pressure relief valve of his espresso machine. With the gauge in the way, [Joe] can’t make use of his frother, but a secondary valve could easily remedy that. [Joe] hasn’t published his espresso hack anywhere, but he did email us some pics of his build. We’ve embedded them as a slideshow after the break. Check out the pressure gauge on the frothing attachment and the pressure relief valve below.
Continue reading “Improving a cheap espresso machine”