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While you may not consider in detail how your coffee is roasted, those that produce it must pay special attention to make sure that the end product is consistent. Equipment to help analyze roasted coffee is normally quite expensive, but using a near-infrared sensor, Arduino Uno and Bluetooth module, Spencer Corry was able to make his own analysis setup.

As shown in the video below, after calibration, beans are inserted into the analysis chamber using a tryer scoop. Light is shined onto the roasted beans, and the intensity of the reflected near-infrared radiation is analyzed in six different wavelengths. Intensity data is then transmitted via Bluetooth to a smart device, which can be used to make sure things are roasted perfectly.

There has recently been a growth of small roasting companies offering custom in-house roasts. These companies are looking for less expensive alternatives to hiring and training a roast master or using the expensive Agtron Process Analyzer. The Degree of Roast Infrared Analyzer for Coffee Roasters, as described in this document, is meant to be an inexpensive means of measuring the degree of roast of coffee beans. The Degree of Roast Infrared Analyzer uses a tryer, a tool found on coffee roasters used to sample the coffee during roasting, to hold a sample of coffee. The tryer is inserted into the analyzer where the AS7263 NIR Spectral sensor is used to measure 6 different infrared bands (610, 680, 730, 760, 810, and 860nm). The reflectance measurements are transmitted via Bluetooth and can then be correlated to the degree of roast. The analyzer must first be calibrated by pressing a button on the inside of the box in which the PVC is used as a white balance as it has a relatively flat reflectance in the spectral range detected by the sensor.

FullSizeRenderYou can buy large cold-brew towers, but they’re expensive, aimed at coffee shops. Make your own instead, and automate it using Arduino.

Read more on MAKE

The post Build a Behemoth Cold Brew Coffee Drip Tower appeared first on Make: DIY Projects and Ideas for Makers.

IMG_1808This x-y plotter uses coffee drips — each carefully calibrated for size and height — to create these portraits.

Read more on MAKE

The post This Machine Prints Portraits with 8,000 Drops of Coffee appeared first on Make: DIY Projects and Ideas for Makers.

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Coffee Payment System Doesn’t Void Your Warranty

Android, app, arduino, arduino hacks, bluetooth, coffee, maker, payment, rfid, smart phone, uno Commenti disabilitati su Coffee Payment System Doesn’t Void Your Warranty 

[Oliver] is back with an update to his recent coffee maker hacks. His latest hack allowed him to add a coffee payment system to an off-the-shelf coffee maker without modifying the coffee maker itself. This project is an update to his previous adventures in coffee maker hacking which logged who was using up all of the coffee.

The payment system begins with an Arduino Uno clone inside of a small project enclosure. The Arduino communicates with the coffee maker via serial using the coffee maker’s service port. This port is easily available from outside the machine, so you won’t have to crack open the case and risk voiding your warranty.

The system also includes an RFID reader and a Bluetooth module. The RFID reader allows each user to have their own identification card. The user can swipe their card over the reader and the system knows how many credits are left in their account. If they have enough credit, the machine will pour a delicious cup of coffee.

The Arduino communicates to an Android phone using the Bluetooth module. [Oliver’s] Android app was built using MIT’s app inventor. It keeps track of the account credits and allows the user to add more. The system can currently keep track of up to forty accounts. [Oliver] also mentions that you can use any Bluetooth terminal program to control the system instead of a smart phone app.


Filed under: Arduino Hacks
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w_dsc8317_nologoTake your cup of Joe from classic to classified with a tilt-triggered spy camera. The trick is to modify two paper coffee cups — install the device in one, slide it into the second, and align holes cut in the bottoms of each. Two LEDs can be seen through the […]

Read more on MAKE

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Two steampunk espresso machines running on Arduino Mega

arduino, arduino mega, coffee, espresso, Featured, mega, steampunk Commenti disabilitati su Two steampunk espresso machines running on Arduino Mega 

vidastech on taste.kr

There’s a team of designers based in Korea who are passionate about coffee machines. Their name is Vidastech and recently shared with us two new hand-assembled machines prototyped  with Arduino Mega called Hexagon and Revolucion.

vidastech01

Take a look at the gallery for more pictures:

 

vidastech07 vidastech05 vidastech03 vidastech04 vidastech06 vidastech00
Lug
22

Two steampunk espresso machines running on Arduino Mega

arduino, arduino mega, coffee, espresso, Featured, mega, steampunk Commenti disabilitati su Two steampunk espresso machines running on Arduino Mega 

vidastech on taste.kr

There’s a team of designers based in Korea who are passionate about coffee machines. Their name is Vidastech and recently shared with us two new hand-assembled machines prototyped  with Arduino Mega called Hexagon and Revolucion.

vidastech01

Take a look at the gallery for more pictures:

 

vidastech07 vidastech05 vidastech03 vidastech04 vidastech06 vidastech00


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