Today I received my BeerBug Digital Hydrometer as an early backer of their Kickstarter. I had some minor issues with the setup, but they were quickly resolved by email from one of the project’s principals. The device is pretty elegant, with a weighted Teflon “torpedo” suspended in the fluid, connected to a head unit by monofilament line. The head unit has a strain gauge (correlating the weight of the torpedo to specific gravity) and communicates readings by Bluetooth.
At this early stage there appears to only be Windows software – a screenshot below shows some of the expected drift when first using the device (readings are very steady now as I write this post) – at the time I also had it installed incorrectly which couldn’t have helped.
Here’s a photo showing it in a three gallon carboy, with the white torpedo in water.
Here is a close-up showing the head unit
I am very excited to try this in a batch of beer!