Smart coffee roaster design with connected devices

Home coffee roasting is a new concept being embraced by the public to produce a preferential flavor of coffee. Unfortunately, without temperature and bean crack monitoring, many home roasters can't provide roasting consistency. Based on this motivation, the paper proposed a smart coffee roaster design with connected devices. The proposed design provides the bean temperature, bean cracks and carbon monoxide monitoring and also allows the operator full control even at a distance from the unit and isolates the operator from potentially harmful side effects such as headache, dizziness, etc. The proposed design was realized based on the model of the current Behmor® 1600 coffee roaster. Temperature, bean cracks and carbon dioxide sensors are constantly monitored by an ARM microprocessor. Data sent over a wireless Bluetooth connection to a smart device aids in user monitoring. The designed system was tested and the results show that the system can successfully measure each parameter with very high accuracy, roast the coffee beans with desired flavor and provide roast consistency for the end user. Moreover, the proposed design not only makes the device safer for the patron to use but also paves the way for automating other home appliances like an oven, washer and dryer, etc.