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I have tested the batch of pcb's and everything checks out. I have put them up on my site for sale as well as a soldered version. I have put a 2 week lead time on all soldered pcb's as I don't have a lot of time to be making them. http://krashkropp.com/shop/ I have also been working on an...

Yes Ruvort I have finished the updates and made samples I had 1 trace on the pcb from the bluetooth that was creating problems for the usb to reset. That has been fixed and I have bought 100 pcb's. After I assemble and test 1 I will have the pcb's for sale on my website krashkropp.com I hope to...

Nice hope it all goes well. The source code is at the top of this page http://krashkropp.com/bn-beer-homebrew/ For soldering there are some small pins, and a stencil from https://www.oshstencils.com/#%20 helps but costs more money. probably the hardest ic is the usb/UART cp2102n. I prefer solder...

I have added some info on my page with A BOM and PCB CAD file. I will try to have The current version of the code on there as well an a day or two. I Will Also try to have some basic instructions for installing the boot loader and firmware. http://krashkropp.com/bn-beer-homebrew/

I have this board in my Keezer and have noticed that the fan Is important for temperature measurements. Also that the fan is not powerful enough on 5v it moves air but I don't think more effort would be wasted. I have added a switching boost ic to bring up the 5v rail to 12v and it will supply...

The last board had header pins for Bluetooth and still used the ds18b20 sensor. I fully populated a new board with a HM-11 bluetooth module and si7021. The new temp sensor also has an accurate humidity sensor and refreshes much faster. This will be the first one I mount in my Keezer and intend...

The boards have been sent out and I should have them back and soldered in 2-3 weeks. I will be writing code for serial display first, 16x2 LCD with buttons second, and hopefully bluetooth last.

Hey everyone. I am still working on this project and have expanded the board some. I will make a GUI for windows computer or tablet with USB interface. 8 scale ports instead of 6. Mostly surface mount parts. Expanded memory. Power from USB. Any fan not just PWM fans. Proximity sensor for door...

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The temp ic's can be mounted on the pcb or remotely with the pre made waterproof ds18b20. the relays are made to use .1" header pins but again you could solder the wires to them and they are also on the edge so right angle pins can be used. I know that the micro usb's can be a pain to solder so...

Yes sorry for no posts. I am taking a class for C++ computer programing that is greatly helping with making the code easy for others to use and modify. I will also have some added features. There are only a few weeks of the class left and I would like to finish the class before I rewrite the...

Yes the temp sensors can be set to control anything. I planned on having one at the top and one at the bottom and control the fan accordingly. If someone is not using the second relay the 3rd temp sensor could be used for fermentation control good idea. I am not using the same setup for the...

estricklin- What type of LCD are you using? The I2C ones HAVE to use A4 and A5. I will be using a 16x2 lcd but with no I2c module. I went this way because mounting was a bit trickier not that it couldn't be done later. I would recommend getting a new lcd for sub $2 or de solder the i2c module...

day tripper- "anti-short-cycle time be at least 5 minutes, and preferably 10” Thank you I have changed this time to 10 minutes. estricklin- “are you using an HX711 for this project?” Yes the original amplifiers I had planned on using (AD620) did not prove to have the best resolution...

I have had some time to work on the sub menu and think it is done. If a keg is selected with the 3rd button on the back of the pcb it will enter a submenu with 5 options name, gravity, ABV, calibrate, and return. All are functioning and save the value to the eeprom so it can be unplugged or safe...

The scales I am using are half-bridge 50kg load cells (4 load cells per keg) and cost about $5 per set on ebay. I also have some concerns about the drift and will have to post more information once I have finished a long term test. As for the beer gravity I will add a section that will allow for...

Hello all this is my first post. Recently I have been working on a circuit board and code for my kezzer to display how much beer is left in each keg, how much co2 is left, and the temperature inside the kezzer. More recently I have added a fan, second temp sensor and second system for a backup...