So, I heard you like DIY with your DIY.

submitted over 9 years ago by queuetueProud Sidebar Reader!

Every scale I can find is either low quality or stupidly expensive.

I thought "How nice it would be to..."

Have a scale that could handle 10 ml or 10 liters.
Provide .01 g accuracy
Eliminate the "can't measure below .07g from tare" issue.
Not cost $500.00 - how about $60.00 instead?
Open source design.
And why not ... let's add in bluetooth.

I got the prototype running today.

Anyone interested?

EDIT: That was .01g, not .01mg, sorry if people got excited, it was late and I mislabeled my units.

Comments

10 points

by daathover 9 years agoMixologist

I want one! And I want to donate to make this happen! :D

How about an API to mix with this using ELR? :D

10 points

by queuetueover 9 years agoProud Sidebar Reader!

> How about an API to mix with this using ELR?

That was actually in my first draft of the post but I didn't know if you had an API available. Definitely let's collaborate. The bluetooth connection makes all kinds of stuff possible.

1 points

by daathover 9 years agoMixologist

I don't have an API (for that), but I'll tailor one to that scale! That would be great!

1 points

by skiddlzninjaover 9 years agoThat one moderator. You know, the honey guy.

If you guys make this happen, we'll have a new suggested scale for the beginner's guide.

2 points

by daathover 9 years agoMixologist

For the scale alone, sans ELR, it should be a suggested scale! :D

1 points

by skiddlzninjaover 9 years agoThat one moderator. You know, the honey guy.

Well, it's double the price of the normal suggested, and most people get into DIY for monetary reasons.

7 points

by InfinityFractalover 9 years ago

Umm, I need this not only for my e-juice, but also my drugs.

1 points

by Ubelover 9 years ago

You weighing out pure LSD?

Pure 25i? lol.

2 points

by caughdogover 9 years ago

gonna need waay more accuracy for that

1 points

by Ubelover 9 years ago

I was just going off the image on the phone screen, 12.802mg.

A high dose of both drugs is around 1mg.

4 points

by skiddlzninjaover 9 years agoThat one moderator. You know, the honey guy.

I'll definitely find a way to sidebar or wiki this if you write us a tutorial. In your picture it shows a thousandths place, but you said .01mg accuracy; which is it?

Also, it would really help if all these parts can be found online and not some obscure shop.

But I really love the idea, and would love to see the tutorial.

6 points

by queuetueover 9 years agoProud Sidebar Reader!

Well, I'm using a 24-bit DAC, so in theory, with a 10KG strain gauge, it can measure down to 0.0005 ml accuracy. Unfortunately, my voltage source isn't stable enough (yet) to measure below about .02, but I'm only on day 1. :)

All of these parts can be sourced from Amazon, I checked. Not necessarily at the $60.00 price point, but not far from it.

It's not a final design, and I'll probably build a custom PCB when I'm finished to get the price way down there. I'm just looking for interest and suggestions at this point.

3 points

by Discchordover 9 years ago

MRW reading that.

Make this happen fast while I am excited, please.

2 points

by kirktover 9 years agoBring on the Diacetyl, baby

Put me down as interested as well. I went back to syringes after trying scales, but this might swing me back to the dark side.

1 points

by _thisisadream_over 9 years ago

Also have since returned to syringes, but I think this would be worth going back for.

1 points

by skiddlzninjaover 9 years agoThat one moderator. You know, the honey guy.

I'm definitely interested.

1 points

by hootenannyover 9 years ago

Count me as interested!

1 points

by lamdac0reover 9 years ago

I'm interested

3 points

by cerevisaphile87over 9 years ago

I use the AWS BL-1KG-BLK. Cost me $10, reads quite accurately, but takes some minor guesswork in the .02 range. You don't HAVE to be super accurate as the .1-.2 difference won't change much flavor. For $10 I'd recommend it all day.

1 points

by cerevisaphile87over 9 years ago

It won't handle a liter. Just saw that

12 points

by matt_bennett05over 9 years ago

Sorry Farva.

2 points

by Frito_feetover 9 years ago

He doesn't want a large Farva - he wants a goddamn liter'a'ejuice.

1 points

by queuetueover 9 years agoProud Sidebar Reader!

It's also only accurate to .1g.

2 points

by Umaryover 9 years ago

Interesting. I live in south east asia and it is the same here with scales, either too shitty or too expensive

2 points

by seratneover 9 years ago

Needs a Hammond box to fit in with the rest of the vape diy community. Will it fit in a 1590DD?

3 points

by queuetueover 9 years agoProud Sidebar Reader!

That's actually my intention. We'll see how compact I can get it.

2 points

by d4rch0nover 9 years ago

Holy shit, I think I have pretty much everything you have on display there... Arduino, that LCD display but in blue, the Sigelei 150w, that breadboard (but I guess a ton look like that), I think even that exact IR remote somewhere.

Got the blueprint?

3 points

by queuetueover 9 years agoProud Sidebar Reader!

> that LCD display but in blue

It's not impossible, but that display is a reasonably rare all-in-one serial monitor called a phi-panel. Anyone can buy one, but they're only available from one source I know of.

>I think even that exact IR remote somewhere.

Now, I'm sure. It's not an IR remote, that's the keypad for the serial monitor.

2 points

by Beerand93octaneover 9 years ago

Scale for e juice?

7 points

by Fliksanover 9 years ago

If you're really asking. Mixing by weight is much faster and easier than mixing by measuring with syringes.

2 points

by Vendeta44over 9 years ago

If you can make it reliable to at minimum of 0.01mg with 4+kg on the scale I'll buy one or four. Seriously. I need new scales and I need them with high weight capacity but nothing in my budget is reliable enough.

Also when you have more perfected innards feel free to hit me up if you need a nice enclosure 3d printed.

1 points

by tet5uoover 9 years ago

Just thought, but if you're doing more than 1L per batch, why do you need such accuracy? 0.1g is probably a fine resolution to measure bigger batches.

1 points

by Vendeta44over 9 years ago

Really don't need 0.01 when I'm mixing batches that big but it's nice to have. Big thing with most 0.1 scales I've found is up at the 3-6kg mark they start to go off by a few grams

2 points

by ceedee99ukover 9 years ago

So I've almost convinced myself that this is part of a complicated ritual to resurrect the wandering spirit of /u/abdada.

I mean, why would anyone want such a ludicrously accurate scale? Or is that one of those "I'd have to shoot you" answers?

Think I'll just back away slowly now, if you don't mind. Humming to myself.

2 points

by NameThatWasntTakenover 9 years ago

What board are you using? Would be cool to use the raspberry pi zero, it's only 5 bucks. You could add a ton of functionality using a pi. I'm totally interested.

1 points

by queuetueover 9 years agoProud Sidebar Reader!

Does this count as a handcheck?

14 points

by trecentersover 9 years ago

More like handjob bc those specs made me jizz.

3 points

by o0turdburglar0oover 9 years ago

I expected to come in here and roll my eyes... Turns out my eyes rolled back into my head as I came in here.

3 points

by trecentersover 9 years ago

I think some would have came if they had only seen the topic.

1 points

by iamgr3mover 9 years ago

Go on

1 points

by Apexifiedover 9 years agoOne of "The Damned"

Two things: I can't go a penny over $59.99 annnd I'd like a picture with 10 litres on the scale.

1 points

by queuetueover 9 years agoProud Sidebar Reader!

It's a 10KG rated strain gauge, but without a top plate yet, no heavy pictures yet. :)

1 points

by dehydratedchickenover 9 years ago

I mix 1l max but at that point I don't need super accuracy. My biggest issue with my scales is they don't respond fast enough so it can mess up my small / trial mixes if I don't take my time.

I'm deffo interested in this and would buy if the postage to UK was reasonable.

Have you considered a Kickstarter for it?

1 points

by PierGarrettinniover 9 years ago

Put me down for 1

1 points

by Casem0over 9 years ago

So, put you down for two then?

1 points

by PierGarrettinniover 9 years ago

Put me down for 1

1 points

by Casem0over 9 years ago

So, put you down for two then?

1 points

by PierGarrettinniover 9 years ago

oops. But, probably so.

1 points

by SpRoOoOoover 9 years agoFrugivore

upvote this shit

1 points

by sodakdaveover 9 years agoOne of "The Damned"

I'd absolutely be down!

Are you planning on providing the DIY instructions? or just selling completed units?

Either way, count me in.

1 points

by TheRonMexicoover 9 years ago

I need two. One for home and one for work. My $300 one I use for soil samples shit the bed.

1 points

by _Yodaiover 9 years ago

Interested. More so if you have specs could draft up a PCB to get prototype made. Maybe sale a kit people assemble them self's.

1 points

by contactclosureover 9 years ago

Count me in.

1 points

by i_am_pajamasover 9 years ago

I wouldn't mind jumping on a project like this if you need any .net sql or Web scraping help.

1 points

by RastaVaporsover 9 years ago

Love it! :)

1 points

by southpaw72over 9 years ago

sweet little project you got there mate, congrats, i probably have all parts bar the load-cell knocking about in a parts bin, would love to see your code btw, you may gain more functionality by replacing the bluetooth with an esp8266 module

1 points

by queuetueover 9 years agoProud Sidebar Reader!

Wifi means you need to write a lot of code and some terrible UI to handle entering passwords, and the esp8266 draws almost an amp from the PSU. BLE means you just wave your phone, tablet or computer at it and it's going.

1 points

by rumblepupover 9 years ago

Throws money @ u/queuetue

1 points

by highsoover 9 years agoOne of "The Damned"

Please do!

1 points

by Vapespinover 9 years ago

I'd buy one immediately, need a new one bad atm

1 points

by aquaphishover 9 years ago

I want

1 points

by IwantANaccountTOOover 9 years ago

So . . . is there a mailing list of something I need to get on? How can I make this happen for me.

1 points

by ScreamQueen813over 9 years ago

Definitely interested!

1 points

by magus517707over 9 years ago

Interested. Code and schematics please???

I'm just trying to figure out how to incorporate a hotplate and magnetic stirring plate into the design as well. Just need a peltier unit and I'm good to go.