1-Day Project: Build Your Own Arduino Uno for $5
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- เผยแพร่เมื่อ 3 พ.ค. 2024
- Help support Julian's Arduino videos on Patreon: / julian256
Clones of the popular Arduino Uno are now so cheap, it's difficult to save money by building your own. But the knowledge gained from assembling an Arduino from individual parts, makes the exercise well worthwhile.
ATmega328P Pin Mapping:
arduino.cc/en/Hacking/PinMappi...
ATMEGA328P-PU Microcontroller With ARDUINO UNO Bootloader good quality pic. tlZZ3bFvwJ www.ebay.com/itm/-/31113148822... via @eBay
5PCS Solderless Prototype Breadboard 170 Tie-points Arduino Shield Dovetail Slot pic. YPeRfbbLgr www.ebay.com/itm/-/20106051574... via @eBay
10Pcs16MHz 16.000MHz 16M HZ HC-49S Inline Feet Passive Crystal Oscillator 20pF www.ebay.com/itm/-/20114881654... via @eBay
USB2.0 6Pin CH340G Converter for STC Arduino PRO Instead of CP2102 PL2303 To TTL www.ebay.com/itm/USB2-0-6Pin-C... via @eBay
£3 ($4.98) NEW UNO R3 ATmega328P CH340 Mini USB Board for Compatible-Arduino pic. u1ZxuU9oEz www.ebay.com/itm/-/31115538382... via @eBay - วิทยาศาสตร์และเทคโนโลยี
PART LIST:
(like this to keep on top)
1x ATMEGA328P chip with Ardunio bootloader
1x USB to TTL converter*
1x 100nF capacitor (-> USB-TTL converter)
1x 16MHz crystal oscillator
2x 20pF capacitor (-> crystal)
1x LED
1x 220 Ohm resistor (-> LED)
*Pay attention of your choice, it should have the same 6 pins as the one used here. Cheaper 5-pin versions do not have the CTS and required DTR pin.
+Gergely Nagy Can I use 22pF capacitor instead of 20pf?
+Vineeth Penugonda For me it actually worked without any capacitor. AFAIK they only needed for stabilizing tne frequency. Try it, it should not be able to do any harm.
+Gergely Nagy Thanks Gergely.
1) Is Voltage Regulator required?
2) www.amazon.in/CH340G-CH340-Serial-Converter-Module/dp/B00W74BTK2?tag=googinhydr18418-21&tag=googinkenshoo-21&ascsubtag=238562e5-130a-4663-912a-7db57129bb8d
www.ebay.in/itm/CH340G-CH340-Serial-Converter-USB-2-0-To-TTL-6PIN-Module-for-PRO-mini-/141653589990?_trksid=p2054897.l5670
Is this the same converter which your provided in the video description? :-)
+Vineeth Penugonda I do not see the pin labels, but the jumper makes me suspicious. There is the one I bought (after I received the wrong one, of course :-p), this is (or at least was a month ago) the cheapest that is the same as on the video:
pages.ebay.com/link/?nav=item.view&id=161835245183&alt=web
Actually the same setup did not worked for me first, probably due to driver problems with Win10: the IDE could not access to the USB serial port. There are fixes on the internet, but it was easier for me to program it by a Raspberry Pi over ISP.
(link if you are interested: learn.adafruit.com/program-an-avr-or-arduino-using-raspberry-pi-gpio-pins/configuration, you simply connect to the appropiate pins of the atmega instead of the ardunio)
I did not use a voltage regulator here, so the USB should work without it too.
+Gergely Nagy Thank you :-)
you can always trust a person that sharpens his pencils by hand/knife. BTW... thanks.
I wouldn't have noticed that if you hadn't pointed it out. Yeah, common practice with awkwardly shaped/art pencils. Probably a habit.
Artist do it to give their tip a beveled Edge. Helps line variation.
My old art teacher in highschool always did this, he had some untrustworthy tendencies.
@@CoryMck Was he a boy scout leader too?
@@englishrupe01 No, not to the best of my knowledge
I've watched a lot of videos on TH-cam. But this is in the top 5 ever.
Brilliant video, brilliantly explained. I'm new to arduino and this showed me stuff I could easily understand and even more important, it got me more interested in learning more about electronics.
I don't comment much on videos. This deserved one. Love your videos and the way you explain in a logical way. Cheers.
Cheers Graham :)
Graham Southern then your a tard as you cant build it cheaper.
Its the cheapest at 3 bucks. and all any of us will ever need.
dont believe hype.
FindmeKicksUK I think everyone can see from your comment that you have just helpfully highlighted how it is in fact you who are the "tard".
Why be so negative? Julian's videos are excellent.
Concur. More valuable than the exercise was the explanation of the process. Very well done.
it's completely redundant if he is making the video based on price as he stated. the components + usb to ttl is more than the price of the clone + shipping. for learning how to program an atmega328 great job!
I'm Mexican, but you explain very well and speak slow, so I understand. Excellent video at all.
yeah, and i am Brazilian
I'm French Canadian and I understand too! Then again I also spreak that funny English language so I guess it doesn't really count...
full of..
And you (whomever chooses this path) learned a whole heck of a lot more building one than buying one. Nice job Julian!
Great explanation video.
It's like making a radio, can buy one for a quid, but making one teaches a whole lot more and removes a lot of mystery.
I always learn something from watching a video. Many good points in this one. Also, like the soldering of a resistor to the LED for prototyping. Never thought of this, but it makes breadboarding so much easier. Thanks,
Hey Julian. This 1-Day projects is pretty amazing. Not only because it is good to understand how all this works together but also because this makes it possible to create a custom board that fits into different boxes or other housings where a genuine or clone board does not fit into. Thanks a lot!!
its like art attack 2000s but for big boys.
by observing your profile picture i guess u too are a fan of ANGLE BEATS. am I right?
by observing your comment, I guess you too are a fan of Angel Beats, am I right ?
Oh great!!! Of course, i am!
Lol good response, If you dont mind ,sub my channel as I may upload anime related content pretty soon. : )
great!!! I'll be waiting
So, am I correct to assume that, if a lot of your projects are standalone (no USB data-connection to a computer required), you can:
1. buy a bunch of extra ATmega's with Arduino bootloader, 16Mhz crystals and 20pF capacitors
2. program and test your project on the single genuine Arduino UNO you already own
3. lift the ATmega from it's socket and solder a crystal and 2 capacitors directly to it's pins (or place all on a breadboard)
4. remove the other project components from the UNO pins, and solder them directly to their respective pins (or place them on the breadboard)
5. hook up a 5V power source (smartphone battery / powerbank?) to the ATmega's VCC and GND pins
6. run your project straight from the ATmega, or the single breadboard (eliminating all the extra space for the Arduino UNO)
7. rinse and repeat?
Just test functioning on the Arduino and when you're done, eliminate the excess bulk by making your own device with the ATmega and bare bones.
So yeah you right.
This blew my mind - this demystifies everything about microcomputers. Thank you!
This is one of the videos that taught me about Arduino when I was starting to learn it early last year. I have been following your videos since.
Really interesting project, julian. I always hope for a new of yours every day in my subscription list and always watch yours first! :) You are my favorite channel to watch right now.
kekejojo1212 Thank you, very kind
Great video Julian.
mjlorton Thanks Martin. I'll be looking at burning the bootloader next.
Julian Ilett I made a shield for the UNO to upload the bootloader to a seperate atmega328, it seems to work without any issues. :-)
I enjoy watching your postbag series. I also built one of these own Arduino with similar components. It did not work at first. Finally I learnt about the tiny 3.3/ 5 V switch on the Serial adapter in one of your other videos. Switched it to 5V and eveything works fine. Thanks
Great explanation, with a clear and comprehensible language. Very appreciated when you see the tons of videos made by people who do not articulate and talk at the speed of a formula 1.
Thank you for this video, Now i know that Arduino board is nothing but straight up wire from IC to pin headers (with protections). I have been dealing with the size of the Arduino for a long time, robots such as sumobots have very intense space requirements, This video has taught me to just draw a PCB with SMD ATmega chips, saves tonnes of spaces that was taken by headers. Great job!
郭虎承Guo Hucheng
Q
@@melvinknight4965 wat
Yeah
You also need to connect AVCC to 5V, or portC might not work properly (according to the data sheet).
I'd also strongly suggest connecting the two GND pins. A decoupling cap between GND and VCC would be advisable too.
You can print stickers that you can stick on the DIP package, that show the pinouts. Very handy, so you don't have to lookup the pinouts.
Great demo of the bare bones Atmega328 Julian. Thanks.
I'd also noticed the two gnds weren't connected - good catch!
beargun42 Good points. I wonder how much current can be passed between those two GND pins before the chip goes pop.
Interesting question Julian Ilett. Looking at the bare die of the ATMega8 (zeptobars.ru/en/read/atmel-atmega8 (top-right is pin 1)), you can see the large yellow square that looks to connected to the ground pads (also note square has a bigger clearance around the VCC/AVCC pads). Seeing that, I think you can probably get pretty close the the maximum rating, with only one pin connected. Though the bond wires may become the weakest factor here. Also noise might be more of an issue with only one pin connected.
Wait. Looking a bit closer I see the yellow square is interrupted at the bottom (left), and partially interrupted at the right (bottom). So probably a bit less maximum current. But since Arduino doesn't really promote using the analog pins as outputs, you can probably get away with it. ADC measurements may be a bit more noisy.
I think we're full circle now (-:
Julian, great video, thank you very much. I'm not a pro, and am using a Surface 4, and def had to connect AVCC (20), AREF (21) w/10kohm in series to 5v on usb to make the arduino IDE recognize the device on the com port. The ide had "port" greyed out until I did this. Now working. Very cool video - thank you.
That is good for a stand alone project. An alarm, clock, letter display, etc. You are a master tutor!
Tthis was one of the most soothing stimuli for my brain I have ever watched. Your voice, filming and explanation was simply terrific, and have made me want to get me an Arduino Uno (although I now know how to build one from scratch)! Thanks for making this, and please continue making more!
I started now to use the Atmel328 directly on PCB and this tutorial was the base for it! Thanks a lot!
Only one remark: I was only able to upload a sketch via USB - TTL converter to the chip adding a 10K resistor between +5V and pin 1 (reset).
+Dirk H Thanks man, been swapping out components for 3 days, didn't realize to add resistor there.
The 10k resister you recommend adding, is it from pin 7 to pin 1 on the atmel chip or from the atmel chip to the USB - TTL converter. Sorry but need a bit more info. Thanks for any help. Like Gerry have had no luck with this for 3/4 days and this suggestion sounds good.
Re: The One Day Ardunio Project: The 10k resister you have added, is it from pin 7 to pin 1 on the Atmel chip or from the Atmel chip to the USB - TTL converter OR just on the USB -TTL converter alone. Sorry but need a bit more info as I have the same problem as you had. Thanks for any help.
Dirk H If this is all it takes to run arduino programs, what is all the extra stuff on the board? in other words, if I make projects using just the microcontroller like this, will I be missing anything important?
What your project requires will dertermine that. Inputs, outputs etc.
It's the amount of produced units that reduces the price. It is relatively rare for a custom assembled unit to cost equal or less than a premade one.
Economy of scales
Exactly what I was thinking
I've seen this done several times, but nobody has been nearly as clear as you have been. You're a fantastic instructor, so keep it up. Thanks!
Thank you for this video, Julian. This tutorial truly helped get me started on moving into making barebones Arduinos, and my own embedded devices.
One thing that I learned that might be related to the issue you had with manual reset on the programmer. Putting a 10K pull-up resistor between RESET and VCC seems to let the 328 reset itself automatically after a sketch is uploaded.
Beautiful! Thank you!
mark plumber shalom teacher
Nice project... just FYI, I used a similar but different USB serial converter, also sourced on Ebay, and I had to use a 22 nF capacitor to couple the DTR line on the USB converter to pin 1 (reset) on the ATmega328, instead of the 100 nF mentioned in the video.
+HighCountryTekRadio What serial converter do you used? I have the same problem. The chip von my converter calls 'Silicon Labs cp2102'.
Thanks.
yes was it cp2102
Nice tutorial, clearly and competently explained. I'll do this. Thank you.
Great video. I just sourced parts to build my own Arduino. $5.94 for the parts. I already had the resister and LED. This is a well documented video with step by step instructions. Thanks for taking the time to post..
Superb.......... Your idea is great for Sri Lanka and electronic lovers who live's in low economical countries.
Maybe on your country, but here in brazil:
Protoboard: +- 3.50 dollars
Chip: +- 3.50 dollars
usb module: +- 2.50 dollars
wired jumpers: +- 3 dollars.
o/ components: +- 2 dollars
Total: +- 14.50 dollars
Arduino Uno R3: +- 7~13 dollars
Is a LOT more cheap buy a arduino on place of the separated components.
doesn't the chinese ebay sellers ship to brazil?
An authentic arduino or a clone board?
I'm used to clone boards being less than $10.
The biggest advantage in doing this is to get the experience.
yeah, but the fun here, is to learn and build it yourself :
But if you want to make a system on pcb that uses an atmega microcontroller(arduino's microcontroller) you need to know how to do it. If you want to just play with an arduino ok get the board.
i had watched this video 6 years ago, i was really surprised to see this recommended to me, the god ol days, your channel really helped me getting started with Arduinos
Very nicely done video. I really liked the extra bit of detail given for side points, such as what the capacitor was for when bridging the USB-to-Serial converted to the input on the Uno. Very excellent incites.
the good thing about making something like that is that it can be on a smaller board and have only what you need around it. making it more compact
That, and removing unneeded stuff allows you to have a very low power sleeping arduino. Good to have a load of cheap sensors left and right running on batteries.
getting a Nano clone would solve much of the size worries while keeping most of the Uno abilities (and USB connection).
1. Maplin is out of business
2. Maplin overprice everything
Hi Julian,
I'm happy to use a purpose made board, but I've learnt a significant amount by watching your video. You've not only made a interesting and informative video, but it has allowed me to understand much better how the Arduino works.
Many thanks.
It's 2020 and this is the *only* video I've found that strips down what's required t the bare minimum. Thank you.
The arduino nano is also increadibly cheap (about $2 on ebay)
None of those cheap versions use the long DIP ic, though, so you cannot re-use/adapt the chip in this way, unfortunately.
The Led at digital pin 13 blinks for 1 sec after I start uploading.... but after that it shows : avrdude: stk500_getsync() attempt 1 of 10: not in sync: resp=0x00
avrdude: stk500_recv(): programmer is not responding
Hi, just for the records, I tried to do this project today and received the same error when uploading the sketch. The problems was solved putting a 10K resistor between PIN 1 and VCC.
Julio Cesar Fausto sweet! Thank you!
that's not my issue. I have the 10KR in pin 1 to vcc and still no go... I have hours upon hours of searching, setup, re setup, reloading of bootloader numerous times.. i have no idea what i'm doing wrong! I cannot get my CP2102 to work for nothing!
same here, but I'm new with this :)
@@wayneswan3092 hey maybe if you place a 22 nano farad instead of 100nano, it may work
Thanks for this, the tip on the U8glib was awesome. Thanks again
This is the kind of videos people need to see on TH-cam, if there where a TH-cam’s Oscar you definitely must win one
hello there!! Can I use cp 2102 converter and as for the capacitor, each is 20 picofarad right??
i can't found 20 pf capacitor, but i can only next to the 22 of capacitor
is it right?
@@321fire9 The capacitors only need to be close, so 22pF should work.
Would this set up work with the attiny85?
You can build ATtiny85 yourself, but by default Arduino IDE doesn't support the ATtiny chips. High-Low Tech Group at MIT Media Lab created their own libraries and shared them publicly, so you can download and use them. I made a video about it some time ago, so you can ask if you have any questions about it.
I came to also recommend a video to compare with something like the attiny85.
Jou programe the ATtiny with a SPI programmer and mot via a serial bootloader. There is nu bootloader on the ATtiny. Jou can use the UNO as a SPI programmer for the ATtiny. And for the IDE add the ATtiny hardware library to the IDE. Then you can upload the skets via a (UNO) SPI programmer. I use a USBtiny SPI programmer. There also DIY with a AT chip. But you can buy theme for allmost nothing.
See Adafruit's Trinket for more info.
It's super easy to build but no, it isn't the same as you rely on the internal oscillator.
Julian, thanks for taking the time to post this. Love the male/female headers on the clone.
That's a nice backlit display, it has so many pixels which make a great resolution, great video.
Julian, always connect ALL GND and VDD pins, including AVDD!
Especially if you intend to use the Analog pins as analog pins... which means that the analog references (AREF) pin needs to be connected to VCC as well.
Peter Feerick so i connect AVCC and AREF bins to VCC ? i have a lcd display that displays temperatures it all runs of 5v and i am putting VCC to D9 pin as a to act as voltage reference for analog calculations ? is this all sound ok ?
Yes, you attach AVCC to the VCC pin even if you aren't using the Analog to Digital Converter (ADC). And you attach AREF to VCC to set the reference voltage of the ADC. If you are using any of the A0 - A5 pins and analogRead(), you are using the ADC. As long as your supply voltage is below 5.5, then all is good!
Peter Feerick thank you for your reply. i had someone write the code for my little project as im new and still learning. the code was made for a fake learnardo and now im using the code on a ATmega328P-PU (attempting my first pcb layout. and i was unsure about those pins. it works with those pins not connected however i will connect them as you advise :)
Why?
The main seller on eBay you use for your parts doesn't have 20 picofarad capacitors, but they do have 22 picofarad capacitors. Is this acceptable? Thanks for a great video!
Thanks. Yes, either value will work fine.
Julian Ilett hey, i seen you buy alot of stuff from ebay i wanna buy 830 ties breadboard and jumper wires cheap but dont know how much is shipping, could you explain me how ebay works ?
+Alex Stone Look at sites like banggood.com. They have free shipping and they are most of the time the cheapest.
TotaleOnzin i already got one from ebay for like $3
+TotaleOnzin Great site. Thanks for the tip.
This was great! I've wanted to learn how to do this. Looking to make a very low power Arduino for projects and this will do the trick. Thank you so much 👍
I was wondering, as I looked over the official board, why one couldn't just build an Uno from inexpensive components, and then I happened on your video. I also bought the official version, but wanted to play around with building a variation. Thanks for taking the time to post!
Arduino is 3$ in aliexpress
I know you are not a comedy channel, but you missed a great oppertunity to sample
"But shit, it was 99 cents". From thriftshop, when you were talking about the crystal.
Slep Yu Lol,that song is pure gold,as well as "Can't Hold Us"
Very good tutorial!! I'm a beginner when it comes to electronics but this really shows the basics of the board. Thanks for posting.
Thank you for producing and uploading this video. Its great to understand the components of a micro-controller and really work out how all the components mesh together to make it all function. It may sound naive and I understand that an engine is also just a collection of simple parts it still does baffle me how we can make electricity run in circles and do tricks for us ^^
You don't need a breadboard! just dead bug build it! :)
Joseph Florentine until you want to change the circuit. :)
Bad advice for beginners.
Here in Romania those costs 2x the price! So unfair...
+LightningShock well buy it from china just like the people who sell them...
+LightningShock because you pay tax for both your government and the european union.
Captain Dandal
Romania is in EU.
+LightningShock captain just said that? Anyway I came here to say you could just buy those Atmega328ps off ebay (and some 16mhz crystals and a few ceramic caps) and use them alone. Those get through the customs and free shipping and what not everytime at least to Finland. And youll only need one of those usb thingys, you can program every chip with the same one.
+MrMats0n So after the programming the USB converter can be removed and all that is left to do is power the microcontroller?
Really enjoyed this. Whether it is cheaper or not this gives a better understanding of how it works, plus I can make a smaller setup for some circuits.
You hit the nail on the head, its not always about cost. If you are designing a component to operate lets say a barn fan that turns on based on temperature, its way more important to understand the base function then most people may think. If something goes wrong you have some idea how to fix it. Thanks so much for this tutorial!
why you can't buy raspberry pi zero what cost $5?
it sold out within 24 hours
Cosmic Taco Cat
but you can still buy it on ebay
+Very Manly Man yeah but those prices are probably high because of people wanting to resell them for a higher price.
I haven't check my self though. So I dunno.
+Very Manly Man arduino it's a microcontroller (made to learn easy way to the microcontrollers with out all the problems handle microcontrollers),raspberry zero it's a computer(made for introduce the computational cience to the people with a minimum cost) those both are good ideas. but with a diferent purpose
mttorresrivera
but you can use raspberry as microcontroller too
Nice, Great job at explaining and making explaining how it works. Thanks for this.
Nicely done! A fun project. Thanks for the video.
To echo what one of the other commenters has said, this is simply the best video on TH-cam. Thank you so much.
Thanks a lot, it's really helps me to understand how I can itegrate arduino into my own PCB
It's that simple, you could add it to your own projects giving micro control and displays without hooking a full blown arduino.
Good video JulIan.
Very interesting and nice video!
Thanks for sharing it with us Julian.
That's really impressive. Amazing little project, thank you.
Good job! The advantage from the assembly is able to record the program in several ATMega just changing the microcontroller as well as being easier to mount the later own circuit.
"... issue of understanding how these things work." You are absolutely correct and have my utmost respect. Thank You.
I really enjoyed this. Just about to start exploring the world of Arduinos. Bought my first kit online and now patiently waiting for it to arrive.
Dear Julian,
Thanks it's very use full.. keep it's up..
An excellent video. It would be hard to imagine how it could be more clearly and concisely expressed. Bravo! Subscribed. Will donate
Very well done Julian. Subscribed.
actually learned a little bit more than thought would for this. thank you.
Thanks for this. For me building my own Arduino is great not because the price, but because it alows to have evrything on one PCB (Arduino and controllers), so the project can get much smaler.
Outstanding Julian. Great video.
You speak clearly and choose your words well. Thumbs for that.
Exactly! Huge thanks for helping understand how arduino works!
An impressive work! Congratulations!.
I like this. Helps us to understand the behind the scenes of what is going on so we can understand thing better. Yes, please create a How to Program instruction.
Great video. You are so clear in explaining everything, oh, and I love you accent...
What i love the most on your Arduino is that it is really small so i can put it in anything. I just must find out where i can get such programmed chip in Romania. Great explained! Thx!
Nice idea shown here...and quite easy to reproduce an reduced home made Arduino Uno.
Thanks for uploading this video here. :-)
Greetings, Silvia
Thanks Julian. That was informative.
Nicely done! Thanks for the lesson.
OMG thank you..truly one of the best videos I have watched!!
Thank you for a very clear and concise tutorial.
Briliant video, best made how-to I have ever seen
Well done, thanks for sharing!
Awesome video. Thanks for the instructions. I've just started building it. ;)
Came back for a quick refresher:)...cheers.
Excellent Demonstration!
Great video Julian, well done! Thank you.
Well explained. Easy to follow
Thanks, good that u want to show how things works, so we understand.
Great video.
Very educational.
Thanks for sharing !!!
Nice video and it helped me understand how the board works. Cheers!
Thank you sir. Great discussion & excercise
Thank you Julian! This tutorial was a huge help!
Great video! To be pure minimalist, no LED/Resistor and the USB to Serial Adapter would be part of your special programming cable (not part of the board).
You can make a simple PCB, the Microcontroller, the Crystal, 3 Capacitors, A 4.5V Battery Clip, a Diode, and a Female Header Connector that you plug the USB to Serial Adapter into to program/comms and then remove it (freeing up 2 more I/O if you need them but no comms). I would suggest a 1uF Capacitor across the VCC and GND pins of the microcontroller for added decoupling of the power pins. To save even more money, you could learn the complicated process to install the Bootloader yourself.
I think I am going to add this project to the Summer STEM class I teach - I try to save my students every penny as they pay for project materials, but I teach the class for free (8 hours a day, 5 days a week, 8 weeks over the Summer).
Thanks a lot for this video. It will be very helpfull for my next project.
Awesome, video!! You made it in 14 minutes. I'm going to try it!!! Thanks
I like the way you patiently explain things. Thank you very much!
Telmo Monteiro Thank you.