The best low power display? E-Paper Tutorial

5 років тому

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In this video I will show you how commercial E-Paper displays work and how we can control them easily with an Arduino development board. Along the way we will discover their advantages and disadvantages and compare them to traditional TFT LCDs. Let's get started!
You can buy E-Paper modules here (affiliate links):
s.click.aliexpress.com/e/_dXh...
s.click.aliexpress.com/e/_dTp...
Websites which were shown during the video:
www.waveshare.com/w/upload/6/...
www.waveshare.com/wiki/4.2inc...
www.waveshare.com/product/mod...
www.waveshare.com/product/mod...
Thanks to JLCPCB for sponsoring this video
Visit jlcpcb.com to get professional PCBs for low prices
Music:
2011 Lookalike by Bartlebeats

КОМЕНТАРІ: 687

@CoCoRiCoSC2 5 років тому

I am currently building a weather station with the 4.2 display and a esp8266. So good ! Just be careful with the partial refresh. Each time you use it, each time it lower the darkness of the rest of the screen. So you need to do a full refresh some time.

@Brutaltronics 5 років тому

damn, basically the arduino eats more power than the display, lol

@greatscottlab 5 років тому

True :-)

@iisky1 5 років тому

don't you expect it to though? its a tiny computer

@TheActualTed 5 років тому

I don't find it very surprising given how the eink works.

@dega235 5 років тому

@@iisky1 I think it uses like 50 mA 5V, so no, i didn't expect that

@nrdesign1991 5 років тому

@@dega235You can drastically cut power consumption by removing the power LED, applying a sleep mode when the CPU is not needed, and pull all unused pins to either LOW or HIGH. The only thing still consuming a few mA would be the USB interface., which can be omitted by using an Arduino without one, or better, just the bare MCU.

@gotj 5 років тому

E-paper has another hidden trap for newbies: the e-paper runs on a quite high voltage (several tens of volts, often two rails a + and a -), and, every time you power it down (enter sleep/standby) you throw away the charge in its "high voltage" power supply caps. That's energy you have to put back into them the next time it comes out of standby. This energy isn't in the datasheet power consumption figures, and does add up to quite a bit when you do the math for say a year or two of display updates...

@agarceran 5 років тому

Is charging the caps such a lengthy procedure that you need to proactively charge them, and keep them charged, before you do a refresh? I guess a well designed system would only charge them when you are going to refresh the screen.

@sugarbooty 5 років тому

Could you provide some real world numbers?

@gotj 5 років тому

@SugarBooty For a clock updating the display once per minute, two rails of (+/-) 20 volts, 10µF caps: 365*24*60*(10e-6*20*20)/3600 = 0.58 Wh. To put it in perspective, that's ~= the energy in a CR2032.

@sugarbooty 5 років тому

@@gotj That's quite a bit of energy. Could the design be optimized to minimize the size of the caps, do you think?

@Milamberinx 5 років тому

@@sugarbooty the calculation is for a year's worth of updates, I don't think that's unreasonable. I have a musical instrument tuner that eats through a CR2032 in a few weeks worth of practice.

@rklauco 5 років тому

Micro Watt Henry? I think you've meant to say Watt/Hour, didn't you? :)

@greatscottlab 5 років тому

micro watt hour......mistakes happen.

@BenCos2018 5 років тому

Patrons get early access

@giornogiovanna729 5 років тому

Oh look, the dude made a deadly mistake. Better act smugly.

@57F.K 5 років тому

@@giornogiovanna729 i dont see the problem, he just corrected him and asked if he meant the other thing?

@giornogiovanna729 5 років тому

@@57F.K I'm pretty sure it's an spelling error. Not an actual misinformation. When you make a typo, do you really intend to say "corected" or you always meant the correct form of it? It's not like he got the values wrong or anything.

@castortoutnu 5 років тому

Dude absolutely all of your videos are so well made it's scary.

@peoplethesedaysberetarded 5 років тому

I remember first hearing about eInk in 2003. I always wanted to mess with it, but it seemed just too far out of reach to custom-fabricate some interface board and write microcode. It's rad to see that we now have these boards and some microcode available. Thank you for the video!

@richardingle7540 5 років тому

I ve been watching your channel for a while now and everyone of them has been facinating, i really love the latest buy or diy builds using the easy pcbs, you show all the mistakes youve made and fixes and then even after all your hard work some of them youve said better to buy , great videos , great projects keep them coming , oh , Merry Christmas 👍🍻

@greatscottlab 5 років тому

Thank you :-)

@NoTengoIlusiones 5 років тому

I have this in my Domotic Smart Thermostat and Valves by Netatmo ( great brand by the way). It even stays on after batteries removed ! E-Paper is a great invention !

@chenli9734 5 років тому

Nice video, cannot wait to see this channel pass its 1 million milestone.

@kilakila5431 5 років тому

I learnt a new concept e-paper display (MED) Microencapsulated Electrophoretic Display ....

@EarlGray_kd7sjt 5 років тому

It is always awesome to watch and learn from you. Thank you for another great video

@agarceran 5 років тому

A local electronics store has started using little e-ink modules to put the prices on the shelves. I think the modules might actually be wireless and they can change the price, name, etc on the fly. As the screen uses no power while it is displaying things they could get away with using them and recharging them only after quite a while. Also, on an unrelated note, I am still waiting on the RGB displays we were promised Years ago. Seems like BW was good enought for most uses and if you want color you need to get a tablet. The tech also has become quite stagnant since quite a while ago, in terms of resolution or number of colors (or gray levels) possible.

@lukasnoels 5 років тому

Adria Garceran I used to work for a Belgian supermarket chain (Delhaize) as a student that had those, I looked them up and the brand is ‘Pricer’. I believe other stores have them as well, they’re pretty common around here. When there was a new product or the Pricer (we called them ESL) was broken/lost we could scan the product and the barcode with our smartdevice thingies and a few minutes later the price and productinfo would appear on them. So they work on some sort of wireless network in the store. Also, we never had to recharge them, they last for a long time because we only had to throw them in a special bin when the text started to fade away or when they wouldn’t respond when we scanned them.

@konayasai 5 років тому

Grocery stores have been doing this for years around here.

@arthurmead5341 5 років тому

I think those use VLF or something crazy

@Derek_Read 5 років тому

Waveshare actually suggests that usage for their e-paper displays: "ideal choice for applications such as shelf label". Interesting to see that someone is actually using it for this purpose.

@SreenikethanI 5 років тому

Hey! I just noticed those E-Ink displays as the price labels yesterday in a hypermarket!!!

@lrochfort 5 років тому

I just ordered the 8 inch version of this myself! Perfect timing :)

@user-zlcksu4asdv 5 років тому

I never thought I could buy e-ink screens! As always, this is a great clip and I look forward to seeing those forever! Thank you!

@kbhasi 4 роки тому

Yep, these displays shown in the video were originally intended more for use as store price displays, but Waveshare repurposed them for DIY projects, and just a few months ago, they started offering e-paper displays of the kind intended for e-readers and paper tablets.

@wenzelp Рік тому

Your description how the e-paper work is on point! Thanks :-).

@jparky1972 5 років тому

As always.... Well presented. Easily understandable. Thank you. Have a Merry Christmas.

@douglasquaid1418 4 роки тому

And a happy new year!

@user-jn6ko8ci6i 3 роки тому

@alysdexia ?

@brainfornothing 5 років тому

Thanks for sharing and Happy Holidays !

@mrjn6940 5 років тому

congrats mr great scott for 1 million subscribers

@gtxviper 5 років тому

Another Great video. Thanks for the effort GS, keep inspiring! Happy holidays!

@isprithul 5 років тому

9 minutes 50 seconds video. GreatScott doesn't do it for the money. EDIT: Thanks for the likes.

@garethronaldo8692 5 років тому

hahaha

@garethronaldo8692 5 років тому

@Garlic Bread i hope he just buy a new tools to work with or his channel will die so fast i told him that in the last video and he only replay with " No "

@Dejawolfs 5 років тому

great scott probably makes enough money from his real job to not worry about such things.

@hikotee 4 роки тому

what does 9:50 signify, exactly?

@jonjohnson102 4 роки тому

10 minutes if you want ad revenue

@Asu01 5 років тому

E-paper sure is an _inkredible_ invention, can't wait to try it myself.

@FunScientifix 5 років тому

Labs lmfao stop

@mickolesmana5899 5 років тому

get out, just, get out.

@SolarWebsite 5 років тому

That's a nice _display_ of humor...

@noname_atall 5 років тому

inkreadable*

@LoganDark4357 5 років тому

Don't _draw_ conclusions ahead of time, you never know what _paint_ it'll cause

@svevaservodio5351 3 роки тому

One of the best video I ever see on this argument !!!

@bennyboi0115 5 років тому

Hello again mate, thanks for another awesome video! Merry Christmas and a happy new year! Maybe a tutorial on how to make a multiplexed Christmas tree?

@CoolguyTheClone 5 років тому

The more I learn outside this channel the more I undertand him and his channel

@sgtunix 5 років тому

Almost 1M subscribers. It will be well deserved. Can’t wait for more content like this in 2019!

@CopyniumPastenium 5 років тому

YES, i am waiting for this tutorial! nice!

@thecoder5550 5 років тому

Great video as always!

@electrodacus 5 років тому

With the LCD display most of the power is used by the LED back light and 1W seems extreme (you will likely damage the LED's at that level). Each LED can be supplied with max 15mA and depending on LCD size you have maybe 4 or 6 LED's so 60 to 90mA typical at 3V that will be 0.27W (that is extreme already). In my projects I use a max 25mA and as low as 2mA for LED back light on 2.4 and 3.2" LCD's so 0.075W or less.

@sugarbooty 5 років тому

That number stood out to me too

@gotj 5 років тому

To me too

@y2ksw1 5 років тому

Amazing technology! I never looked into epaper devices.

@infsoftgmbh 4 роки тому

That looks very cool. Look forward to more videos!

@ranbeersingh4297 5 років тому

you should make a video on PIR sensors and hopefully build a motion sensor or do a 'DIY vs BUY' video on it! Love your work!! Merry Christmas!!

@BenMitro 5 років тому

Thanks - yet another great tutorial. Perhaps, one day JLPCB can take you on a factory tour? That would be super interesting. All the best for the festive season and the coming new year. Cheers!

@kikkobro 5 років тому

Was just thinking about using one of these in a project, thanks for the Ali link!!

@armandoac1334 2 роки тому

Great video as always

@TugrulDuran 5 років тому

Great Scott, great work! But you dont need an external program for BMP>C conversion. GIMP can do that. Just save as and select the right format that I cant remember now. :)

@chipheadnet 5 років тому

Awesome as always!

@northshorepx 5 років тому

indeed!

@sebastiangregoroff3370 5 років тому

As always , excellent video .

@pauljackson2126 4 роки тому

Imagine setting up your project in an expo and using this module as your ID card.

@ozule1782 5 років тому

Merry christmas Scott!

@greatscottlab 5 років тому

Thank you

@BlueClefto 5 років тому

this is the best for Ebooks and replacing traditional notebooks

@MCsCreations 5 років тому

Pretty nice technology, man... Thanks a lot! 😊 Merry Christmas! And take care with Krampus. 😉

@joopterwijn 5 років тому

Thx for this vid, and Glückliche Weihnachten, und ein farbliche neue Jahr!

@e1ghthree 5 років тому

Happy holidays sir! It’s so called outside ❄️

@luna010 4 роки тому

called

@runforitman 5 років тому

8:17 that’s what I like about the tft screens; they have an sd card where you can put .bmp’s to call from your code

@UttamKumar-ic4qh 5 років тому

Sadness is that great Scott still don't have a million subscribers

@parameshpavin2708 5 років тому

Awesome video on epaper displays gud to see this video👍💓

@aot2002 5 років тому

great job greatscott

@rafaelmarroquin4429 4 роки тому

Excelente amigo, siempre explicas super bien vale cada maldito segundo ver tus videos :D Gracias

@EeekiE 4 роки тому

What an awesome display technology

@FreiR 5 років тому

Great sugestion 😊

@colin2390 5 років тому

You should have been in UKposts rewind GreatScott

@thomasmarliere2505 3 роки тому

Thanks Scott 🙂

@navrobot 5 років тому

Great Video Thank you very much as always fun and informative

@hiteshkumarsingha5042 5 років тому

Nice.. merry Christmas...Scott.:)

@benjaminramsey4695 4 роки тому

Another great video! Man I wish I had an extra lifetime for all this tinkering!

@davidjohnson3163 5 років тому

So close to one million subscribers

@avejst 5 років тому

Nice review 😄👍🎅 Thanks for sharing 👍 Happy hollydays 🎅👍😀

@matuspospisil 5 років тому

U are best youtuber, I love U!

@chiparooo 5 років тому

Thanks for sharing as always. Hope Santa brings you a new highlighter!

@Allan-mf1he 5 років тому

Great stuff as always, 1M is creeping closer! Would like to see some practical uses of e-parer. With the 4s refresh time touch screen option will be frustrating... Got a Nextion display sitting on the shelf, I should get round to that some time.

@AtomkeySinclair 4 роки тому

Great content as usual GS. Could you have just used the 3.3 volt out on the Arduino Uno? And why do you think these are slow compared to the ones Amazon uses in their Kindle e-readers?

@Eric-ip8hy 5 років тому

Good video now i understand why my broken e book reader displays the same picture the whole tim!!!

@royan3312 5 років тому

8:38 ''Micro Watt Henry'' ? , You meant to say ''Micro Watt Hours''?

@greatscottlab 5 років тому

Correct

@Ramog1000 5 років тому

oh dang xD I was like what is that unit I never have heard of xD

@videolabguy 5 років тому

Ah, yes. I knew him well. Oh! No. Wait. Watt hours? Never mind......

@funny-video-YouTube-channel 5 років тому

*The e-paper displays are great* for anything that is not video or games. Could work for many projects with the arduino.

@CZghost 5 років тому

Like e-books? Look at Kindle. It actually uses this technology. Those displays are monochromatic (white or black only), but with pixels so small it looks like printed image, you can make grayscale pictures...

@mrrodgersphysics 5 років тому

Who down-votes these? This guy's work is consistently awesome!

@Ch4grin 5 років тому

In Gimp you can convert the image to XBM (X bitmap) format and skip the additional conversion utility.

@Lukanyator 5 років тому

very interesting, thank you!

@sasodoma 5 років тому

Too bad that kindle like readers weren't more popular and didn't drive the price of these down.

@TheActualTed 5 років тому

I think they are and they did. Just look how expensive it was years ago.

@peoplethesedaysberetarded 5 років тому

I still own my PaperWhite 2. What a great device. I just wish I could (legally) move my PURCHASED BOOKS between devices when this one dies.

@agarceran 5 років тому

@@peoplethesedaysberetarded AFAIK You can move the ebooks you purchased on amazon between devices as long as you have both devices associated to the same account. Try the amazon reader app on a mobile phone or something, even on PC, and you should be able to redownload your purchased ebooks to that app. In fact I believe it lets you continue reading from the same point between devices.

@pileofstuff 5 років тому

@@agarceran Yeah, but only with another Kindle reader, not another brand.

@peoplethesedaysberetarded 5 років тому

Adria Garceran Rad, thanks! IIRC, at some point the DRM was tied to one device. Glad that’s not the case.

@gamingtechtamil69 5 років тому

awesome video

@FantaBH 5 років тому

It looks like you going to hit million subs soon. But hardly and sadly not this year. Good job , marry Christmas and happy new year.

@segoiii 4 роки тому

there is also a partial update function. You don´t need to refresh the whole display every time.

@elijahsantiana134 5 років тому

Wow I hope your my science teacher

@64_Tesseract 5 років тому

This thing is cool... It'd be good for some emergency tool, maybe a small scanner that maps your surroundings thst you can refer to for up to a week.

@pedrovelazquez6166 3 роки тому

if you are using the software Image2Lcd, set scan mode: vertical scan, check reverse color, insted of normal choose Mirror left-right and uncheck include head data ;) for the 2.9' BW model

@tomidabjakoaudytorprzewazn8853 5 років тому

Great X-MAS MerryScoott ;)

@ACupOfDuck 5 років тому

Please, more about the e-paper! It's a subject i'm really curious about! And is it possible to put some kind of backlight on it to get some typ of visability in the dark?

@varunr9231 5 років тому

Ty for the video

@MGKday 5 років тому

ok, now you gave me a LOAD of ideas with this videos !! will give it a try for sure ! however, i think the 4.2inch is a bit small for what i want to display. Would the 7.5inch be as easy to use with an arduino (or an ESP32) or is it really dedicated for/easier with a Pi ?

@siliconhub6492 5 років тому

Great Scott

@electronic7979 5 років тому

Nice video 👍

@TechnoShare 5 років тому

Nice video 🙂👍

@myrkurvr 5 років тому

Ive been waiting so long for you to use these types of screens

@maicod 5 років тому

now we need a touch e-paper display :)

@ask-wj2pf 5 років тому

I was waiting to make this video since ages thanks man thanks 👍🏻👍🏼👍🏻👍🏼

@ratchet1freak 5 років тому

I really hope that lib lets you use PROGMEM directly to input an image instead of having to use RAM.

@bastienguilbaud5768 4 роки тому

Great Scott, great video. It all makes sence now. Can such E-paper display be back-lit? That would make it usable in dark conditions.

@RomanoPRODUCTION 5 років тому

Happy 2019 🕊

@everestprenga4040 5 років тому

Hello buddy I enjoy each video of your channel. It's a great place to find some answers and to see detailed explonation for your problems. Can a cheap SMPS used for powering LED strips be used as a batery charger maybe with some modifications? Please let me know if u have an answer.I would appreciate it a lot

@btouw8558 5 років тому

Informative

@manishrana3889 5 років тому

Greetings Scott. Is it possible to scavenge a display or the camera module of a smartphone and use it with Arduino for a project.

@AmitSinha249 5 років тому

Most awaited

@noureldinhesham5635 5 років тому

Early congrats on 1mil subz

@suntzu6122 5 місяців тому

Can you help point me in the direction of using this display to display multiple (20+) heat sensors? Thank you! Love your channel!

@obnovec 5 років тому

Happy Christmas ;-)

@Epic-Electronics 5 років тому

Boom I was the Millionth subscriber :D

@GreenDayFanMT 5 років тому

I see a new project for the holidays

@dans-designs Рік тому

Great video thank you for spending the time to explain in such detail.. I wonder if you can help me, I am trying to interface a 1.54" Waveshare (Version 2) e-paper display with an RP2040 mcu using micropython but I am unable to find a working driver, do you have any experience using these screens on an RP2040?