Hardware Programming | Battery Capacity Testing Robot [ Part 3 ]

This machine will automate the capacity testing of 18650 cells based on a constant 1 amp current draw. I have a few hundred 18650 cells that were salvaged from laptop batteries. Some may be good, and some may be bad. I want to assemble all of the good batteries into packs for my camera, phone, solar power bank, the list just goes on really. This machine is the first step. Also yes the stack of batteries was a very dumb idea but I tried to use the parts I already had. Obviously a DC(high rpm) motor is not suitable especially since you cant really do precise movements.
Watch part 2: • DIY Battery Testing Ro...
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Hardware
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Constant Current Load (inspired by GreatScott): • Li-Ion Capacity Test |...
Battery Discharge Protection Circuit: Designed by me last summer :) This circuit monitors the battery voltage and disconnects it from the load at around 2.52V. It needs an external signal such as a switch or an Arduino digital write to turn on the battery once it disconnects. When the battery dies, the circuit disconnects itself from the battery, drawing zero current in its off state.
Lithium-Ion Batteries Research: batteryunivers...
Social
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Website: devoncrawford.io
Twitter: / devoncrawford13
Snapchat: / devoncrawfordyt
Instagram: / devoncrawford_
Github: github.com/dev...
Discord: / discord
Gear
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Video Editing Software (Premiere Pro CC): prf.hn/l/BOomWo3
All Adobe Apps (I use this plan): prf.hn/l/Xv5qk5Q
Keyboard (Velocifire TKL01): amzn.to/2AQTjJQ
Monitors (Dell U2518D) : amzn.to/2AQQmco
Webcam (Logitech C920): amzn.to/2Cw588c
Desk Microphone (Blue Yeti): amzn.to/2FPFmzi
DSLR (Canon T7i): amzn.to/2T54mpZ
Wide Lens (Tokina 11-16mm F2.8): amzn.to/2MlpvcO
Music
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BVLLVH - fool around
Link: / fool-around-prod-bvllvh
zodivk - passionfruit(+)
Link: / passionfruit
₪ jetson - ㅤㅤtemporary °ㅤㅤ
Link: / temporary
Mozaic - Transition
Link: / transition

[@binaryspace6444]

can Someone PLEASE get this man a 3D printer!! The cardboard and hotglue works, but is just killin me! xD

[@mikey6128]

he would first have to get pretty good at cad to do all that xD

[@AlexTorres-dq8qt]

@@mikey6128 im sure he can learn it quickly tho😅

[@jm.7701]

I contact him like 3 months ago because ANYCUBIC wanted to give him a 3D printer ! He was ok, then he didn't anwser... HE NEED A 3D PRINTER

[@mikey6128]

@@rotiik thats why its called basic, the types of parts he would be making would be very intricate

[@mikey6128]

@@rotiik He would also ned to make supports hold the rectangles, Connections for the servo looking thing to move a part of the rectangle, etc.

[@lexscher]

DROP EVERYTHING! Devon just posted another video!

[@VeerDaVlog]

😂😃😄😅

[@VeerInternational]

@@VeerDaVlog I drop my comment 😂😃😄😅

[@ismaelsoum6401]

Can wait till the next one🤦🏾‍♂️

[@spacet1me]

Nice, enjoyed it bro. Such a nice feeling when making a useful program or machine for yourself and it working. Can't wait to watch it improve. Entertained, would love a deeper dive with diagrams of the circuits and flow, etc. Along with the macro.

[@magenwright7080]

I'm just getting into programming so I'm not 100% sure about whats happening but, I can tell you're excited that your machine is working and it's so cool that you built that from scratch. That's what I want to be able to do ^-^ Very inspiring!

[@apollossevere8602]

My friend, pleaseeeeee continue to make these type of videos, words can’t explain how grateful your audience is that you make these videos. You equipped us with real world experience on how computer engineering is like in and outside college. So for that I say thank you my brother 🙏🏽

[@RM-bg5cd]

This is seriously the most authentic CS channel around!

[@Sbrnsandy]

I put off my lab report for this video. I just love procrastinating with Devon!

[@citiesinspace]

Your videos have honestly inspired me to pursue a degree in computer science. Thanks for the great content man

[@hermenides9348]

Just started watching your videos about a week ago but I can say that it really is some of the best stuff I've seen on KZbin in a while. It's really inspired me to start learning how to program. Just seeing you take on tasks and then learn your way through them. But doing it by just going for a problem you want to solve and trying to tackle it by just doing is amazing. Keep up the good stuff man.

[@catonchronic5354]

Same

[@CharlesTMunger1]

Already excited for the next video! See you next month, fellas!

[@DrAbhinavKumar]

Lol

[@siwel060lewis6]

I’m planning on taking a computer science course when I get out of grade school and these vids really helped me see what the assignments are like Thanks:)

[@zinedine2751]

The passion you are showing ib your youtube channel is really motivate people to follow their passion too, i love you man

[@theransomgamer]

I got same interest as yours, got 500+ 18650 batteries to test and wanted that machine to help me out. Love your work ❤

[@psybergames7327]

Just had to sub I am a game dev student last year college before 2 year at uni but you videos are great and really like 3 years computer science in 8 mins awesome vid

[@xzeusky9390]

Coming back and watching these videos has showed me how quickly time has flown by. wtf....

[@sonarjeff]

I’m working on an IC tester for my thesis and seeing you man doing this, keeps me hanging. 👌🏽

[@something44444]

Its about time you made another one of these

[@Rohan-cr5np]

I'm not understanding shit. But I still feel like watching your videos.

[@kevindedhia7716]

Never had interest in computers even when i was a computer science student but after watching your video...i started coding a lot and improved my grades😀

[@adamuboy1224]

I am wondering how lucky I am to be at the same university as this guy and being in the same program and it doesn't even seem to me that he is getting the respect he really deserves!!!... Kudos man!!

[@1ronman1]

That is sick. For your conveyer, make your dispenser have 4 sides to it, keep the original idea you had but just don't have the incline so high. It barely needs to be above horizontal.

[@Ash_Marshall]

Genuinely my dude, I came into computer science and coding really recently and you're kinda inspiring me to keep on it. Thank you for that.

[@iamvivekkaushik]

Remembering the good old days.

[@JonShannow92]

Hey Devon, cool video! Great project. BTW I have a suggestion. You don't need a battery feeder, just arrange them straight in line stacked above the actual measuring chamber. Once you eject the next falls in place immediately. Fix a slightly springy backplate so your linear connector can push it for good contact. Cheers

[@marcrhandallpanuculan4230]

Bro Im am really inspired by your videos, im also compsi student, because of your videos I feel more inspired doing my projects, keep on the good work!

[@duduken20]

yayyyyyyyyy part 3 ! Been waiting for this for a while. Thanks a lot man! Hope you always succeed.

[@PuraTvOyun]

Congrats man. I can't even tell you how much i missed working with arduino and raspery pi. It's been so long since last time i had chance to work with them. And seeing you having a sucessful project makes me willing to do some projects again. :)

[@nichobeastmode8361]

I’m a junior in high school in computer science learning python. Watching ur videos makes me want to just learn computer science at school.

[@EzraFuller]

I'm going to be honest, you have become one of my favorite channels to watch. Tonight I'm planning on using your photoshop program to timelapse the sunset, and moonset since they have been setting so close to eachother within an hour. Keep up the good work and I hope your life outside of KZbin is going well!!

[@nandimasimula1665]

I really love your videos!! Makes my day every time. Takes soo long... So happy if I see that you've posted a video

[@VeerDaVlog]

😍

[@Gableblond]

I'm French and with a friend for a student project we built and program a similar system !! A really interesting thing ! Nice video ;)

[@Nonsense116]

Man it is a straight BLESSING whenever I see you upload!

[@benjaminmellingen5340]

starting to take shape. I still have no idea what you are trying to do or why, but good job :D

[@pranjalagnihotri6072]

Thank you so much for a new video after long time.....

[@HolySemtex]

DEPRESSING BATTERY sounds like a dope artist name btw

[@gorgisheli4360]

When you post video it's like a christmas for me

[@Da_Jange]

Cannot wait for part 4!!!!

[@белка-у8б]

Man, I love you'r channel and thanks for video.

[@root317]

Finally a new vid :D

[@yungzlvsky4189]

you're such an inspiration for me, keep 100 bruh

[@raphael___]

You could make a magazinesque container which stores the batteries. Just like a gun magazine, a spring or gravity would load the next battery after ejecting one.

[@zakariabahbaz5348]

To make a conveyor I would use a bunch of motors in an array, there’s probably a better solution but that’s the one I could come up with off the top of my head

[@briangach4365]

Your videos are so cool and inspirational

[@muhammaddutt8557]

I'mma be honest..you're pretty cool dude

[@Rafael-zy8nl]

You are a Computer Science undergraduate student right?I'm from Brazil,and currently I am at the Computing Engineering degree's fourth semester,being that the closer we got to hardware were VHDL projects and,in this semester, MIPS assembly language, with nothing but Electrical Circuits' theory related to analog electronics being lectured until now because Basic Electronics is a course of the next semester and, sspeaking sincerely, I really don't believe that we will ever need to do a project like this for the degree, which has Embedded Systems and Microcontrollers courses as optional, and that project gives me the impression that CS students at the US would be greater computer engineers than the ones graduate at the Brazilian universities.However,I still hope to do this Hardware-Software integration someday, especially before graduating.Keep up with the project bro, it is awesome!

[@nadaahmed1171]

He always fascinates me like i want to get into computer science to know how the hell does he do all this stuff !!

[@thuglifetrump868]

Computer science classes won't teach you any of this. Just dive in yourself.

[@nadaahmed1171]

@@thuglifetrump868 but like he studied it in university he probably didnt know that b4 did he ? I mean i need to learn the basic to be able to explore by myself haha but thanks !!

[@rockedwow7217]

@@thuglifetrump868 exactly what I thought!

[@thuglifetrump868]

he's studying it right now. We are in the same year actually, just different universities but we cover the same material. I am honestly telling you now, do not depend on college to learn any of this lol. It can serve as a fair background for some of the knowledge you'll acquire teaching yourself (programming languages, linux), but just start slowly on your own and you'll hopefully enjoy it!

[@rockedwow7217]

@@thuglifetrump868 you have my brain! I'm also doing the same thing.. Well here we call it Bsc.It programming, meaning bachelor science Computer programming. And the way the teachers teach is so slow... I am learning on my own... But my class mates are learning with the teachers circulum.. And during exam time. They still cheat. And I'm like. "Your teachers ain't gonna help you find a job you know" but anyways I'm learning c# and c++ programming.. I would love to learn what he's doing but I got no trashcan filled with electrical components.

[@josiahthobejane]

Devon makes everything look so easy :) - but it is if you work to achieve it.

[@masterjiggle5728]

Instead of conveyer belt you can stack them as normal and when the battery on test gets thrown out the barrier should rotate using a motor pushing the new battery on its place Btw love your videos

[@nadaahmed1171]

I FEEL LIKE ITS BEEN AGES OMG FINALLY SEEING YOU AGAIN!!

[@zakariabahbaz5348]

Finally a new vid! Been waiting for one.

[@amentitm7420]

Hitting the gym is paying off Devon

[@felixbrumm9699]

Thanks for the Video! Love to watch your vids...

[@nicolasneyra2790]

I really really love your videos so much bro

[@aljaztravnik]

For the conveyer belt: 1 get like two rubber bands 2 attach them onto something like a cylinder that will move 3 connect oneside of the belt to a 12V dc motor and put a switch on it.

[@MrMauricioFenix]

Awesome project, I'm excited to see the next episodes

[@zeethegreatest]

I wish these videos were longer

[@tateprevailsYT]

Been waiting the whole week for your video

[@gabrielgarcia1334]

Bro, you videos are very inspiring, I love it and it really motivates me to learn more and more. Keep making videos, hugs from Brazil :)

[@DivijShrivastava]

This was nice. Could you please do another elaborate video for server design and architecture.

[@aidanazkafaro5601]

You are soooo ready for the future

[@LerkGG]

i fucking love these videos bro and i love that you dont just fucking spam only these videos too

[@freshtacos15]

great video always hyped for when they release

[@tmhelsing]

Might be a little late, but for accurate stopping and starting you should be using a stepper motor. Awesome work on with the cardboard

[@GabrielIchiro]

Dude I love your work, keep going!

[@sickciarlatano]

U have the ability to turn anything actually boring interesting

[@zolongOne]

The guy who loves his batteries 😀

[@Syttruc]

You could make the dispenser into a plus sign instead of flat. That way when it spins it only grabs one and stops the next one by blocking it.

[@semiclean]

Give Devon a 3d printer and we get to mars before the end of the year !

[@Algo_Paradox]

You are really creative

[@8animer889]

I just don't understand a shit you actually do but love watching them :) XD

[@Makishima240]

you can load/drop the batteries one by one like a dispenser using a step motor.

[@jonasneugebauer8348]

Don't use a conveyor belt, use a ramp and two servo motors to raise 2 dividers up and down similar to whats in a vending machine , so in the beginning both walls are up, the upper servo goes down a battery rolls inbetween , the upper raises again the bottom one goesw down , battery drops down , if you want i can send you a sketch or solidworks drawing

[@patricioreese4468]

I've been waiting for you to upload a video for so long..

[@MyNameIssaSimon]

Instead of a conveyor belt, stack the batteries on top of each other then use a servo to push one battery out of the bottom. Like an up-side-down PEZ candy dispenser.

[@dallasphillips91]

Instead of a conveyor, just put a stopper arm on the feeder so that it only feeds a single battery without letting the others drop uncontrollably. I think that would be a lot easier for you without having to redesign the whole mechanism.

[@eduardofernandes7889]

Thank you Devon!

[@davidpereira7938]

Welcome back to the show!

[@Blondid]

I like what this guy doing

[@blackdot541]

You are doin great. continue on. Instead of cardboard use plastic plates

[@bravenick]

Video are absolutely awesome!

[@raulaguilar9300]

I started to view your videos a few months ago, and i see they you have good skills about electronics and programming, what career are you studying?, im very impressed

[@Skibszilla]

you deserve so many more subs

[@jimmyscott5144]

You could try a lego mindstorm for a belt and also if you do that you could make a T shaped splitter that drops the battery in a bucket if it’s bad and if it’s good it slides onto the belt and is put in a different container

[@axedyson]

got the popcorns now I'm ready!

[@bolotv9508]

is it possible for you to do an Arduino tutorial? thanks for responding, greets from Germany

[@noirlands]

The next think you should do is make a sorting robot for dead and live batteries.

[@markimarks9826]

When you stop researching just to watch Devon's video.

[@dalton1209]

A conveyor belt is just a motor turning a belt. So pretty easy to do I would assume.

[@youssefkassous9307]

I wish i could be like him one day

[@wniawnia]

so cool! Okay now i need to do something!

[@fakeapplestore4710]

this is the video that made me subscribe

[@AletinLoL]

What you could also do would sort the ones that are good and bad to separate piles (similarly how you measure them the system would remember the values (compare them to desired ones (with a deviation of course) ) then shove it to left or to right based on the result. All you would have to do (after implementing the conveyer/different delivery method) would be put the battery into the sort stack then it would sort left the duds right the still usable ones. If you would want to be really fancy you could implement charging of the good ones basically the same as you decharging them mechanism. You have all in place you just need to make 2 more replicas and alter one of them to do the good ones go right bad goes left. So, in the end, you would just come to the machine fill it with batteries come back few hours later and have them sorted and charged (the good ones well you could charge both but why).

[@souhail2012]

This is 2010 good quality content . Plz do more

[@froozynoobfan]

A conveyor belt is just a belt like a bike tyre and 2 motors. Ps you need sorting for batteries. Maybe a horizontal pusher with a vertical stopper?

[@Jarza]

Awesome video! keep it up bro

[@johns66723]

Ur content is sooo good

[@pentalacroix]

Dude I needed this RN!

[@drenny88]

:o He's back!

[@NullExx]

Wow def a love seeing ur vids, ur an inspiration for me to challenge myself! TY!!!!!

[@sanjayraveendran2964]

Could you please do some basic tutorial on MVC or any other programming for guys like me...I really like the way you explain things..just cannot understand what you are talking about because it's too complex...I wish you could break it down for people like us..pleaseeee