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Yeah, in a perfect world I'd buy 5/16 and a lot of the problems would go away. I already have the 1/2, and I kinda want to use it. I will also be trying as hard as possible to keep the kegs cool, but on hot August weekends, even the shade is toasty. Although I could sink the keg into a round...

My plan at the moment is to carbonate the kegs in my fridge @ home, because there I have the control. The kegs will be cold when I take them, but who knows what temperature they'll be at when I arrive. I'm not even close to a production environment, so likely I'll be aiming for the pressure to...

I'm looking to build a jockey ideally for use during the summer camping season. I can get ice, but I'll likely be in a warm climate (ie: the keg itself won't be chilled). I'd also like to make use of existing 50'-1/2 stainless tubing I have from an immersion chiller. I've balanced a CO2...

LandoLincoln, I have stainless wire (Safety Wire). It's 0.02 diameter, it is what I used to hold the coil when I put it into the oven. I was hoping to have the coil without any wires, which is why I asked. Holding it together with the safety wire is my fallback if I can't get the heat...

I've been working on a stainless steel heat exchanger for my brewing adventures. I managed to wrangle together a DIY 1/2 tubing coiler akin to the one that has been around HBT for some time. and and quite pleased at the diameter of the coil I achieved. Now I want to compress the coil...

Jeeeeeze Brewman, I turn my back for 1 month, and now you are making a damn STEAM GENERATOR! Seriously?!? -W

What do you do for separating hops and hot break from the wert? I see you have a setup to allow for whirlpooling but is that not opposite if what you want with a center drain?

According to the datasheet you can (or should) wire pin three to +5V so the sensors do not have to run in parasitic power mode. I've experimented with my bank of sensors (6 of them) and I can poll about 20x faster with this setup. What bneal said is correct, I just wanted to point out that...

Unfortunately the rPi only pushed 3 volts on the gpio pins and this relay needs 5V to trigger. You will need a 5v supply, probably the same driving you pi, and then a transistor that is turned on by the pi to allow 5v to go to the relay. If you have an extension board that supplies 5 v you can...

Depends on the Wattage of your element. I have a 5500 Watt element @ 240 volts. Which is 5500 / 240 = 22.92 amps, over twice what that board can handle. If you had a 2000W element. It. Would be fine as long as you don't switch it on and off two fast with the relay. 40 amp solid state relays...

Protto, I think I get what you are saying. I believe the difference is not to have the K_i term set to zero if you are far away (5 degrees in your example), I think you want to zero out the error term so that the integral does not accumulate any values. I may spend some time playing around...

Br3ttb, Unfortunately I'm not making use of a brewtroller. Your name came up as an expert in the field. I am currently driving all this using a Raspberry Pi, a ruby PID library and GPIO pins. I am taking your first piece of advice, and just setting the integral term to zero so it does...

Alien, thanks for the contact, I'll see if Brett can tell me why this is a bad idea. Protto, I'm running a HERMS. Basically a HEX in my HLT, all electric at about 5500 Watts. I circulate through the coil, and keep the water turning in the HLT with two pumps. It is slower naturally than a...

So, when playing around with setpoints, I find that my error integral gets wound up to a large value in that it dominates everything else. While working out the problem, I have been running on PD mode (Setting K_i to zero). Trying to find a better solution I hit up Wikipedia...

I have a dilemma and would like to go fishing for opinions. I am planning on putting together a keggle single-tier system this spring. I am lucky enough to have a SWMBO that gifted me two chugger pumps this last Christmas :D. Now I need to figure out how I'm going to chill and extract...

I'm cross referencing data found on the web and I can't make this work out. I started with http://beerlegends.com/chemistry-of-hops-and-alpha-acids I looked at Apollo to see if I could make the numbers work, mainly because they were right next to the scale. I believe the percentages on the...

Found something that may help get rid of the old sightglasses: Ultrasonic sensor on ebay Seems like it would be pretty easy to read levels in all three vessels for pretty cheap. You'd have to give up one IO pin per sensor. This would be one more step toward incorporating automated valves and...

I often have the same problem with a swarm of bubbles. Inside my measurement cylinder I drop in the hydrometer then use a straw to suck away the bubbles.

I third this method.

What you are looking for is called a scratter. A search on google will probably have a thousand DIY projects you could mimic. I made one out of plywood, 2x4s (turned on lathe to make a round drum) and some screws sticking out to grab the apples.