iBLOPPER – iot Fermentation Logger´s!

Activity and fermentation logger´s to attach to your airlock.

Build your self. Free to use and test. Full license = 20 EUR .

iBlOPPER = Bubble Logger

iBLOPPER” and “iBLOPER/s” is activity fermentation loggers to be attached to your (S)airlock. It works by detecting tiny vibration or sound when a bubble is released reporting Blops pr. min (BPM), indicative SG estrimate and temperature into the CLoud, e.g. Ubidots STEM and Brewfather.

Bubble Loggers for TILT

SBL4TILT” + “iBLOPPER/t” relays the TILT hydrometer SG and temperature into the Cloud together with the BPM. The BPM or Sum Blops can be used to give a second view on SG progression. Both should be seen as side-projects. Also notice the “Fake Fat Pink TILT” emulating a TILT. See under “Builds” for more info.


All 4 Bubble Logger Arduino Builds is a DIY projects and you need to source components yourself for the build. It is free to use and test with a shared free license (renewed quarterly) supporting 100+ users at the same time. You can support us by buying a private license for 20 EUR.

What is the iBLOPPER?

The “iBLOPPER” and “iBLOPER/s” is a small box or probe you attach till your airlock of choice (currently tested for S-airlock), and it monitor the bubbles (Blops pr. min (BPM)) turning this data into SG estimate. Also it logs the temperature.

To use the “iBLOPPER” and “iBLOPER/s” just attach the iBLOPPER to your airlock, then enter the brew name, brew size and OG. During the brew at preferably during high kreutzen you will need to take one hydrometer reading and by very simple maths you will be able to predict the SG with an error of mean of 3-5 SG points. This way you get both fermentation activity data by BPM and SG estimates to judge how far your fermentation have come. All while we monitor outside fermenter, hence, no floating tubes in wort.

The logger got a Access Point mode to enter all needed inputs and else run autonomous. It contains it own very simple webserver, but we strongly propose to make use of Ubidots STEM and/or Brewfather to log the data.

Easy to build

The “iBLOPPER” + “iBLOPPER/t is rather simple to build and very easy to solder with only 7-12 very simple soldering and taking around 1-1½ hour.

iBLOPER/s” + “SBL4TILT” is generally soldering free and hence can be build with no soldering at all even containing both relays and OLED screens.

Deep drive down into the data behind

The data behind “iBLOPPER” and “iBLOPER/s” to act as a indicative SG estimate goes back till former builds and hence all the way till 2019. A model currently consists of 30+ brews have been made ensuring linear behavior between reduction in gravity (rG) and Sum BPM/L, hence, by 1st degree polynomial/modellistic approach the blops pr. min (BPM) can be turned into a indicative rG/SG estimates.  In this sense we emulate PLAATO.

“What is the point of being alive if you don’t at least try to do something remarkable?”


“What is the point of being alive if you don’t at least try to do something remarkable?”


“What is the point of being alive if you don’t at least try to do something remarkable?”


Let’s us build together

If you need to contact us please use:

Facebook group: https://www.facebook.com/groups/2176394599141882

Email: sales[a]bubble-logger.com