Weekend Workshop: Caffeinate in style with this DIY cold-brew coffee drip tower

weekend workshop cold brew drip tower 051416
Need something to keep you busy this weekend? Look no further. The Weekend Workshop is our weekly column where we showcase a badass DIY project that you can complete with minimal skills and expertise. We’ve dug through all the online tutorials on the web, and gone the extra mile to pinpoint projects that are equal parts easy, affordable, and fun. So put on your work pants, grab your tool belt, and head to the garage — it’s time to start building!

Stop anyone on their way to work and what are you likely to see? A messenger bag slung over their shoulder, perhaps, but more likely than even this typical accessory would be the presence of a cup of coffee. America runs on it — just ask Dunkin’ Donuts.

Though as the coffee craze continues to boom, one such trend within the industry has begun to garner a considerable amount of momentum: cold-brew coffee. To aficionados, this style of coffee tends to boast an incredibly rich flavor with very little acidity and is preferable to any other kind of joe. Additionally, pouring cold brew coffee over ice only seems to accentuate its profile, offering drinkers a tasty cup of java that trounces hot-brewed coffee in every category. Thing is, cold-brew coffee takes upwards of 18 hours to brew, with at-home kits yielding nothing more than a small cup of the stuff.

So why not make your own cold brew drip tower? Faced with the exact dilemma mentioned above, a clever DIYer named John Edgar Park devised a genius method for crafting his own cold-brew nectar. By making use of some chemistry lab glass, an Arduino-powered controller, and a little engineering know-how, Park constructed a gigantic, four-foot-tall cold brew drip tower capable of converting 200 grams of ground coffee into delicious cold brew.

Thanks to Park’s ingenuity, anyone with a few spare hours on their hands this weekend can also put one of these amazing contraptions together. To help you get started, we pieced together an accurate materials list required for pulling off the build and listed it below. It is worth noting that in the walk-through, Park recommends physically taking your chosen solenoid valves and dispensers to a plumbing store in order to obtain the correct fittings. Aside from that, here’s everything you need to get started:

Tools:

  • Dispenser and valve fittings (more on this above)
  • Teflon tape
  • Screwdriver
  • Washers
  • Gaskets
  • Reamer
  • M4 screws and nuts
  • Wiring

Materials:

  • Water serving pitcher
  • Siphon brewing upper beaker
  • Flat-bottomed boiling flask
  • Graham condenser (optional for aesthetics)
  • Food safe solenoid valve
  • Arduino Uno
  • Transistor circuit
  • Prototyping shield
  • Two 1000-ohm potentiometers
  • Hario valve
  • 12″ of 1/4″ tubing

With all the necessary tools and materials gathered, it’s now time to start constructing this mammoth of a cold brew drip tower. Just follow Park’s comprehensive walk-through and in no time you’ll have the tower assembled and a batch of cold-brew coffee ripe for enjoyment. Happy building!

The entire walkthrough for building this cold-brew drip tower can be found here.

Emerging Tech

Hope it doesn’t melt! Rocket to ISS carries vital supplies — including ice cream

A rocket has launched over Virginia's eastern shore, carrying supplies to the International Space Station (ISS). Inside the spacecraft are supplies for the ISS itself and the crew onboard, such as scientific equipment and food.
Cars

Want to keep connected on the road? Here are 5 ways to add Bluetooth to your car

The best way to make an old ride feel young again is to bring it up speed with the 21st century. Here's how to properly add Bluetooth to your vehicle, via independent kits, vehicle adapters, or aftermarket head units.
Cars

Prep your car for the coming snow and sleet with these cold weather tips

Driving in the winter, whether downtown or across the country, is rarely easy. Luckily, we've put together a quick rundown of a few things you should do to winterize your car before the snow officially hits.
Smart Home

Brew it fast, hot, and flavorful with our favorite coffee makers

Whether you're looking for a simple coffee maker to get you through the morning or a high-end brewer that will impress your taste buds and your friends, you'll find some of the best coffee makers around on this list.
Smart Home

Thanksgiving in an Instant ... Pot? Here are our favorite recipes

Did you know you can cook the majority, if not all, of your Thanksgiving menu items in your Instant Pot? It's all about picking the right recipes. These are our picks for the best Instant Pot recipes for Turkey Day.
Emerging Tech

‘Super-Earth’ discovered orbiting nearby star

Astronomers have discovered a large planet circling a sun nearby to Earth called Barnard's Star. The potential new planet is thought to be cold and icy and has a size of around 3.2 times the Earth.
Emerging Tech

Microsoft’s friendly new A.I wants to figure out what you want — before you ask

Move over Siri and Alexa! Microsoft wants to build a new type of virtual assistant that wants to be your friend. Already making waves in Asia, could this be the future of A.I. BFFs?
Emerging Tech

OSIRIS-REx spacecraft successfully tests its asteroid-sampling arm

The OSIRIS-REx spacecraft, launched in September 2016, is closing in on its target of the Bennu asteroid. The craft has now unfurled its robotic arm, called the Touch-and-Go Sample Acquisition Mechanism (TAGSAM), and tested it successfully.
Product Review

DJI has always been the king of drones, and the new Mavics are almost perfect

After flying both the Mavic 2 Pro and Mavic 2 Zoom for over a week, we’re convinced that these are two of the best drones that DJI has ever made.
Emerging Tech

Awesome Tech You Can’t Buy Yet: A.I. selfie drones, ‘invisible’ wireless chargers

Check out our roundup of the best new crowdfunding projects and product announcements that hit the web this week. You may not be able to buy this stuff yet, but it sure is fun to gawk!
Deals

Cyber Monday 2018: When it takes place and where to find the best deals

Cyber Monday is still a ways off, but it's never too early to start planning ahead. With so many different deals to choose from during one of the biggest shopping holidays of the year, going in with a little know-how makes all the…
Emerging Tech

Smarter cities need smarter addresses. And you just need 3 words

To make really smart transportation choices, more precise location data will have to be integrated with citywide transportation data. Here’s how one company is mapping the world by using just three words.
Emerging Tech

Ghostly galaxy discovered lurking on the edge of the Milky Way

A team of astronomers from the University of Cambridge have discovered a strange galaxy next door to the Milky Way. The dwarf galaxy, named Antlia 2, is dark and dim and gives out much less light than expected.
Emerging Tech

Ancient crater the size of NYC discovered under the Greenland ice sheet

A huge crater has been discovered beneath the ice of Greenland, and is thought to be the result of a meteorite impact millions of years ago. The crater is one of the largest ever discovered, measuring 19 miles across.