Electronics
Measurement of temperature is important to many stages of brewing. There are lots of options out there, but I decided on the DS18B20. What's different about this device is that it's not just a thermocouple or thermistor but a self contained chip with which you communicate
Electronics
My custom Arduino shield for my fermentation cabinet gets the job done, it's a less than optimal design. First, I used multiple individual optocouplers and transistors. It would have been much more elegant to use integrated components with multiple optocouplers and multiple transistors in one package. Second, I