Testing my first prototype ... EVERYWHERE!

I compiled a bunch of footage of me testing the first prototype of a dishwasher turbidity sensor everywhere! I had a lot of fun making this and I can't wait for the sensor to get more accurate.
I hope you guys don't take this too seriously. If you're mad at my terrible engineering approach, pease watch till the end so understand what next steps I'm going to take.
I would also like to say that I'm not being paid to promote this product! It was a gift from the company. If you want the Complete Starter Kit then you can find it on Amazon here: www.amazon.de/...
...I'm also not making any money if you decide to buy the kit using this link. (You can also just type the name into Google lol)
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⚙️Have any questions? I might've answered them! Check out this video where I answer 73 questions: • Video
⚙️INSTAGRAM: @rivertechjess
/ rivertechjess
⚙️TWITTER: @rivertechjess
/ rivertechjess
⚙️PINTEREST: STEMinine (I have my bookshelf here!)
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[@RiverTechJess]

I hope you guys don't take this too seriously. I had a lot of fun making this video. If you're mad at my terrible engineering approach, pease watch till the end so you understand what next steps I'm going to take to actually test this thing. As always, thanks for watching!

[@tafiqulrafi2569]

How can I contact you? Could you pls gimmie ur email adress, pls?

[@tafiqulrafi2569]

I wanna talk to u about mechanical engineering

[@RiverTechJess]

@@tafiqulrafi2569 Hey, my email is [e-mail] :)

[@Tool-Meister]

There’s a great article about turbidity on Wikipedia. According to that article, The most widely used measurement unit for turbidity is the Formazin Turbidity Unit (FTU). ISO refers to its units as FNU (Formazin Nephelometric Units). ISO 7027 provides the method in water quality for the determination of turbidity. It is used to determine the concentration of suspended particles in a sample of water by measuring the incident light scattered at right angles from the sample. The scattered light is captured by a photodiode, which produces an electronic signal that is converted to a turbidity. Open source hardware has been developed following the ISO 7027 method to measure turbidity reliably using an Arduino microcontroller and inexpensive LEDs.

[@belenbalta356]

Really great! Would you recommend buying the starter kit for introductory electronics projects?

[@RiverTechJess]

I would recommend the starter kit for anyone that is completely new to electronics. It comes with an easy-to-use guide which guides you through all of the parts and teaches you how to build stuff with them:)

[@ingframin]

Coffee with a moka! Nice! You are appointed of a honorary Italian nationality 😁 Also, nice work with the sensor, congratulations! The sensor may be dirty as well. In the dish washer, it gets washed every time. I agree with you on the light sensitivity. I would put it in a piece of pvc tube.

[@RiverTechJess]

Yes! There's much more to be done:) Also, I think the plastic casing isn't clear enough, or maybe I need a stronger LED

[@midorixi]

I thought the same thing about the moka! GO GIRL!

[@SharmanePowell]

Is there a link that leads to a page in English?

[@markfrancisdelacruz8296]

Hi I have enjoyed every engineering video in here. Happy to watch all your videos. Please make more contents please 🙂

[@aadharbisht1511]

I think there is noise on the 5V line or the signal line. What if you add a capacitor between Vcc and ground? Also, try averaging the value? I am a mechanical engineer but have worked a lil bit sensors as well. Edit: haha I should have watched the whole video before commenting :p

[@fawwazhosein]

Usually, the UNO boards are prototyping to show proof of concept designs. The electromagnetic noise you would generally get from the wires themselves since they are super close to one another is cray. So, if you were to measure stuffs, know its with a +/- error from the 'calibrated' lol value. To remove from the pool of possible error sources, my advice is to solder to wires components/breadboard. :) Looks great!

[@RiverTechJess]

Awesome! Thank you. Yes, first I want to go through and eliminate all other possible sources of noise before soldering everything together as a final design. But i'll also do this once I incorporate Matt's advice above^^ Thanks by the way! I appreciate your comments:)

[@matthewtorok8110]

One way to get around the potentiometer being so sensitive, put 2 in series. Use a 10K as you have, and then a 500 ohm or even smaller. You can then use the 10K to get within the ball park of your 4.2V (0 NTU or whatever it should read) and turn the much smaller potentiometer to finely tune the voltage. Just might be a way to make that circuit a little easier to use, if you stick with that. It sounds like if you get a proper sensor that isn't already broken it shouldn't be needed anyway though, which long term might be a better solution.

[@RiverTechJess]

Awesome Matthew! Thank you! As you can tell, I don't know what I'm doing so I appreciate your advice. I'm going on vacation for the next 3 months until I start my PhD, so I'll need to try your suggestions when I'm back:)

[@matthewtorok8110]

@@RiverTechJess No worries. I have played around with electronics a lot in my spare time, and done this double potentiometer thing before for fine tuning values. Enjoy your vacation. I look forward to seeing progress once you are back

[@yandoko7547]

hi, im also mechanical engineer from indonesia, can you make a program to controll dynamo/motor rotation per minute?

[@MrWachtmann]

Amazing Video Jess, rock on!!!!

[@RiverTechJess]

Danke thomas!!:)

[@mertugurlu4744]

What is NTU? Because I couldn't understand

[@raygenrogue5261]

It's one of the unit Turbidity is measured in. NTU stands for Nephelometric Turbidity Units. It's used when Nephelometric method is used to measure the turbidity of the fluid. There are other units and methods too like JTU (Jackson Turbidity Unit). Usually NTU and JTU are equal but different methods are used in different areas.

[@mertugurlu4744]

@@raygenrogue5261 I got it. Thank you so much

[@RiverTechJess]

It's basically a measure of the cloudiness of water. Thanks raygen for the explanation:)

[@pieluvr7362]

So does that mean at bar high reading was from everyone being louder

[@RiverTechJess]

Good question. But turbidity measures the cloudiness of water. It basically detects the amount of light the passes through a water sample. I have some videos explaining this here: kzbin.info/www/bejne/a4e0pHieg9l_fa8

[@pieluvr7362]

@@RiverTechJess thank you for answer i am just a basic but question again sound can change light ?

[@aashirchaudhary4928]

um hey. i want to be a mechanical engineer and right now I am in 10th grade i was wondering if u can give me a few pointers. the reason I am asking is because for my school and ib i have to do an project to be allowed to go in 11th grade and my project is to build and drive and electric go-kart

[@abdelruvalcaba5274]

Maybe this can help u in future projects. The problem could lay on the type of sensor that u are using, the noise as u said, but also the capabilities of the Arduino itself. The sensor could be used just for general propourses and not accurate data sensing. Try different vendors and check the datasheet of every of them before you order it and understand the sensing principle behind. This will tell u if it's worth to buy it or is the same sensor,but different vendor. Lastly, the Arduino uno Is an starter kit, it measures I think at 8 bits or idk. I do not remember it, but the capabilities to scale accurate the signal is really limited. If I try to read out from other developer PCBs or a more advance Arduino u might receive all the data with less missed data. I'm an electrical engineer, so I had tons of bad experiences with sensors as u are now.

[@kunalpatel9345]

hey i didnt find your bookshelf on your Pinterest. can you upload it.

[@RiverTechJess]

Hey! I didn't think people actually would check it out:D haha so I don't actually have one there. Are you interested? Should I start one?

[@kunalpatel9345]

@@RiverTechJess yess i am mechanical engineering student and i am really looking forword to see and read one. so can you please start one.. thank you in advance.

[@josemontano6222]

Can you do a video in the life of an ee engineer. I’m working towards an ee engineering degree and I would like to know more.

[@RiverTechJess]

I'm not an electrical engineer so I don't think I'm qualified:D

[@jussmor]

So clearly something is broken probably my brain. Ajajajaja. Danke to this video Saludos from Ecuador.

[@RiverTechJess]

haha thank you!:)

[@tafiqulrafi2569]

Will mechanical engineers be in demand in future? Pls ans it as soon as possible.... Also mention the reason as well..... Pls be quick..... I m vry much passionate about mechanical engineering

[@196steffi]

Your videos are the best :)

[@RiverTechJess]

Awww thank you

[@raygenrogue5261]

You know it's broken when Turbidity of beer is far more than coffee and latte. Beer is easier to see through so its turbidity should be less than the other two. By the way what principle it's working on ? Nephelometric Method ? o.O

[@RiverTechJess]

Haha exactly:P No, it's just a simple attenuation scheme. Nephelometric would be better but the point is to be cheap and find things currently available

[@raygenrogue5261]

@@RiverTechJess Then why not use the basic turbid rod method ? It's the cheapest method I can think of.

[@TheKillersXsempre]

*note to self* If you ever go to Berlin and see a blonde girl harassing water streams and doing weird things to beer go say hi. Loved the video lol :)

[@RiverTechJess]

Lol yes please do! But I'm back in Zurich now. I still think it's safe to say that if you ever see a blonde girl harassing water, anywhere, it's me so say hi:)

[@m-pana]

I don't want to state the obvious, but if you intend to do more thorough testing on the whole device, consider getting a more professional sensor from somewhere other than Amazon. Cheap sensors might just be intrinsically inaccurate... :) Also, do you have some datasheet to look up to see if you have to connect the sensor in some fancy way and to check its measurement tolerance?

[@RiverTechJess]

Yes, as I said at the end, I will try testing other probes. There actually was no datasheet! Just 3 labels for the wires, GND, Vin, and Read out

[@shayenemendes1501]

this was my first video without legends, i'm so happy cause' I did understand everything

[@RiverTechJess]

awesome! I'm glad it was clear:)

[@Devilscave83]

Nutella hat 6430 NTU!

[@29C1C]

At 0:37 , that's a Bluetooth module not an arduino nano, smh.

[@RiverTechJess]

you're right!

[@alaadamfree]

👍🏻❤

[@hasan16189]

The most pretty and smart Engineering i ever see 😍😍😍

[@morzariadeep]

shouldn't you be like building your own thing rather than trusting an amazon product because clearly you have a phd 😅

[@RiverTechJess]

I don't have a phd. And the point is to "hack" things you can already find instead of re-inventing the wheel:)

[@scr5051]

Great. Pretty woman i Like it