Using Shift Registers to Get UNLIMITED GPIOs for our project !!

День тому

In this video, I have covered about Shift Registers and how to use them to get multiple output pins by just using 3 GPIO pins of our microcontroller.
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⏱ Time Stamps ⏱
00:00 Introduction
02:58 A brief about Shift Registers and it’s types
04:26 Using Shift Register with ESP32
04:45 Code for controlling 8 LEDs using 1 Shift Register
08:45 Using 2 Shift Registers to control 16 LEDs
11:20 What’s Next ?
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КОМЕНТАРІ: 148

@techiesms Рік тому

Should we make 5x1 Home Automation using CHOTA vala ESP8266(generic esp8266)???

@amgu6596 Рік тому

Yes, please

@drelectronics13 Рік тому

Yessssssssssssssssssssssss🔄

@chiranjitkarmakar838 Рік тому

Yes

@dash5500 Рік тому

defiantly yes. please

@ayushsachan7518 Рік тому

Yes please

@shashikantsingh6555 Рік тому

I am happy to see Indian electronics community popping out and making the lives of engineering students easier .. hats off to you sir.. keep it up🔥👏👏

@neinnine Рік тому

I guess youre new to electronics. Im not indian but the electronics online community has always been led by the indian community. From the most basic arduino projects to detailed electrical and electronics lecture theres always a good indian video of it.

@nasirshah1983 Рік тому

74HC595 is only output shift register and you can only extend output pins so GPIO means input and output. so You can't say 595 is a GPIO extender its only a output pins extender

@EricStringer Рік тому

The 74HCT595 or variations thereof is a very good choice for expending many outputs with only three output pins from the processor. Of course there's a parallel in inversion of this which works well since when you load the inputs it captures the data at that moment in time. What makes this chip great is that you can shift in the data first in the shift register but will not go to the output until you hit the load line. Theoretically you could have unlimited outputs your limit is only how fast you want to refresh an output bit. For example I use these to create a 3D LED cube meeting 16 outputs.

@pauldriscoll6319 Рік тому

shift registers are fine if its a slow driven output so an alternative is do parellel latching, a chip I have used a lot for large GPIO expansion is 74HC373

@WintonMc Рік тому

Random ask: You wouldn't like to make a UKposts video of that would you Mr Driscoll? Everyone with a phart smone has got at least one UKposts video in them. ;)

@pauldriscoll6319 Рік тому

@@WintonMc corrected the part number - my head is full of a cold and mixed up my chips lol

@pauldriscoll6319 Рік тому

simply write 8 bits in one go to port D, then toggle pc0 low and back to high to latch the pattern to U2 Q0-Q7 then do another write to Port D and toggle pc1 low and back high to latch that pattern to U3 Q0-Q7 .... you could add a 3rd latch and so on if you need more lines just add its LE to the next PC port (pc2) and so on - each latch uses the same pins PD0-PD7 as the inputs and LE as the latch toggle .. low sets the Q lines to match D lines High keeps them in that state. if someone really wants to get this up and running im happy to help just buzz me here

@pauldriscoll6319 Рік тому

@@WintonMc Never done a You-Tube Video .. life keeps me busy as it is... but here is all the details.

@landonbrown5295 Рік тому

You should look into the 74322 and compatible replacements. It gives you 8 I/O pins that you can control as a bank. It doesn't quite give you full GPIO, but it's perfect for talking to a wide bus from a limited number of GPIO pins

@techfunial3817 Рік тому

I was working on shift register today to control 16 LEDs Using the adafruit Io platform And boom I got your notification on shift register Thanks for sharing

@techiesms Рік тому

Amazing...

@alanmusicman3385 Рік тому

Using this technique with an absolutely minimal MCU like the ESP-01 is absolutely a great solution where you need intelligent output patterns on a large number of LEDs. Once you get over 16 outputs though a chip like the M5450 or the TL5940 or MAX7209 does a better job and provides brightness control too.

@Calphool222 Рік тому

It might be worth mentioning that there is such a thing as an "analog shift register," which works like a digital shift register, except you can shift in analog *voltage* levels, and that voltage level is retained on an output pin until the next voltage is sent, and then the voltage level shifts to another output pin. Of course that's sort of irrelevant with an Arduino UNO, since they don't have a DAC built in. They can be useful with a DAC shield though.

@GarretsonIndustries 5 місяців тому

I have been trying to find a video all morning which is recent enough and includes all the code. Finally found yours. Thank you so much.

@techiesms 5 місяців тому

Happy Making 😇

@profdc9501 Рік тому

of course, also commonly available are the PCF8574 and MCP23008/MCP23017 that work over i2c

@pareshmhatre4019 Рік тому

Your excitement is huge, that is great 👍

@ArjunKohli Рік тому

i also worked on shift register , controlled 6 seven segment and make a digital clock

@sandeepsingh_eagle 3 місяці тому

Really wow May I know which tool you use for those electronic animations

@danny117hd Рік тому

Great video great sound great font size. Only issue is edge of screen is truncated by my 1080p TV that I watch on so for example it's an or loop and not a for loop while you are showing code.

@buddhimaamarasinghe9997 Рік тому

Excellent project, Make the project in ESP 01 as well. Do a project with multiple inputs. Thanks.

@rugneshvora209 Рік тому

this video was full of knowledge😎❤‍🔥

@rusticagenerica 8 місяців тому

Excellent video !! May God bless you !

@SerialWombat 5 місяців тому

You might take a look at my Serial Wombat project. It basically fills the same niche of adding GPIO to Arduino, but it's firmware running on a microcontroller, so it does a bunch of smart stuff (rotary encoders, PWM, Servo, ADC, etc) that a MCP23017 or pca9685 can't over an I2C interface.

@danieldollive4660 Рік тому

Very well and clearly explained.

@ENI232 Рік тому

very clear and concise video!

@leonreucher1016 Рік тому

Nice video! But I would recommend (when available on the MCU) to use GPIO expanders with an I2C interface. By changing the address of multiple I2C GPIO expanders you could control a massive amount of GPIO (example IC: MCP23017) (Edit: Thus as a addon controlling pins using I2C is very simple, not bitshifting and so on!)

@mattbatt1984 Рік тому

Damn, this video is clean and informative.

@kunaviniju Рік тому

Dear can you please make a video with WT32-SC01 how to program it's with your previous home automation project Thanks

@wayland7150 Рік тому

I used to use a cheap large 40 pin chip that was a large shift register and 32 outputs that could drive small relays.

@k.k8221 Рік тому

Use MCP(Ex. MCP23017) only two pin is required for expanding GPIOs, what you think using MCPs....

@bschwand Рік тому

you can use a 595 directly on an SPI bus with the proper clocking and phase. most microcontroller have hardware SPI. Often even with DMA. That is the most efficient and fastest way to IO expand with a serial to parallel shift register...

@carlosbah4623 Рік тому

¡Guau! Que bien explicado todo. ¡Gracias por compartir su conocimiento!

@riseiot Рік тому

Amazing explanation

@nuurqomar. Рік тому

In Dots matrix or running text led, 7 segment, ic shift register is usefull of that projects, but for projects with need multi input/output, more efficient use ic expander PCF8574 (8bit) or MCP23017 (16bit) with i2c communication (2 wire only)

@jnharton Рік тому

Microchip makes an 8-bit one too, the MCP23008.

@CristiNeagu Рік тому

I don't get why people are so fascinated with shift registers when IO expanders are a thing...

@CristiNeagu Рік тому

@@jnharton MCP23017 can be controlled in both 8 and 16 bit modes.

@jnharton Рік тому

@@CristiNeagu That’s interesting, haven’t read the datasheet in depth. My point was just that there were options.

@duinoblogtube2070 Рік тому

I see u used the old V of arduino IDE, btw it work slow on my laptop, hello from Morocco 👋😊

@wali7862 5 місяців тому

will this work for sensor that make use of digital pins as signal

@AhmetTasdemirDJLuds Рік тому

I was made 512 pin harness tester device with mcp23017 with i2c connection with 8ch i2c multiplexer.

@taranagnew436 Рік тому

so you put the latch low (prepares it to receive data), send the data, and put the latch high to receive the data??

@CerebralDad Рік тому

Are you able to read analog inputs with these shift registers?

@mr.satishfy Рік тому

Using addresable led can be use

@vishalnarwal9482 Рік тому

Is it possible to use the Shift Registers along with Rainmaker App?

@ProDigit80 Рік тому

Before watching, 2^3=8, so use the pin as binary. The con is, that it can work with LEDs, but not very good if the output needs to be precisely timed.

@all-about-automation Рік тому

But we cannot use this multiplexer to read sensor data because this module generates some offset value

@shakerileiwat4341 Рік тому

Thank you , great video 👍👍👍 11:44 great idea, do it please.

@yedukondalumidde1900 Рік тому

Excellent project 👌

@techiesms Рік тому

Thank you! Cheers!

@scienceoftheuniverse9155 Рік тому

Wow that's awesome. Thanks indeed

@techiesms Рік тому

Glad you liked it!

@jobin6784 Рік тому

Excellent explanation

@techiesms Рік тому

Glad it was helpful! Just Share it with others as well!!

@IncendiarySolution Рік тому

I've been using the 74HC597 piso for a keyboard input. I've been needing a good explanation for how these work.

@codewonderland3463 Рік тому

I love this tutorial!! All your wiring diagrams are upside down though 🤣

@Shivam-tr8ut Рік тому

Sir please make a project that can control home appliances using NODEMCU ESP8266 with Manual, Blynk App, IR Remote, Alexa voice command, EEPROM. I am waiting for many months for this project. I hope you will upload video soon

@Hypoengg 7 місяців тому

Can someone explain me purpose of siso and pipo shift resistors. I feel like they are useless

@SecularMentat 2 місяці тому

You might be able to get away with controlling multiple things with a MUX if you're using latch gates to hold them 'on' once they're going. Still, I've been wondering about the shift register doingthis as well.

@GrandNecro Рік тому

I guess the only downside is that you can't use shiftreg to read analog signal like an analog demux can

@rusticagenerica 8 місяців тому

I love how you speak English !!!!

@philipp9651 Рік тому

good sean it on another vid but can you show how to take inputs from shift reg. so it can scan 8 inputs and show if one has changed? please

@duality4y Рік тому

you need a parallel in serial out type of register.

@philipp9651 Рік тому

@@duality4y thanks had that idea but would need software for reading the inputs then I can send it out to another SIPO reg

@steelbrotherhoodof2359 Рік тому

what will you use as gpio software driver ? on your operating system.

@steelbrotherhoodof2359 Рік тому

like a the input of the keyboard. requires keyboard.drv pre loaded. along the mouse.drv. on the msdos operating system. so i believe a omni gpio hardware. requires also. gpio.drv preloaded in the memory from boot of. but i dont know. since also the ram space need to be limited to make room for other hardware. and also a irq or a cpu cycle need to be resident reserved for that. hahahaha. i did not even see the whole video. maybe you just explained that the arduino compiler took care of that. while writeing the file away.

@Tn-qb9kk Рік тому

Is it the same as SerDes ?

@guliyevshahriyar Рік тому

Thx

@FARMAN68 10 місяців тому

I want make audio 8 in 8 out matrix. Please make a helpful video about this.

@kkelectronics831 Рік тому

Yes we are waiting..............

@eddiemendoza7353 День тому

How can I connect an SD Card Module to this register?

@64-bit63 Рік тому

It would be cool if it used i2c protocol, them it has to use only 2 pins for data communication. There is a small delay tho but it doesn't matter really because it is really small

@wayland7150 Рік тому

Yes but it then takes up your I2C pins. It maybe better to bit bang the device and have another line for chip select. That way your clock and data lines can be connected to several devices.

@drelectronics13 Рік тому

Is anyone getting device not found error while scanning QR code in esp rainmaker app,??

@yuvrajarora9359 Рік тому

Will I be able to control relay with it

@techiesms Рік тому

Yes

@yuvrajarora9359 Рік тому

@@techiesms actually i was asking because you said it will trigring again and again

@82levy5 Рік тому

Great tutorial, only the title is not accurate. The problem is that you can only use shift registers only for outputs. So it's not GPIO.

@shobhitkumawat Рік тому

Jahanpanah tussi great ho 🙇‍♂️

@techiesms Рік тому

🙌🏻🙌🏻

@AlexanderLipkovich Рік тому

dont use 595, use serial led driver , it the same logic, but every output have up to 70mA

@VeritasEtAequitas Рік тому

I'm glad you have subtitles because you can't speak English. Thanks for the video. Maybe consider an accent neutralization course so we can understand you better.

@LedPixelAnimator Рік тому

Sir esp32 project use for smart home control 10 appliances with physical switch and with & without internet..... Arduino cloud iot.... Because there 10 devices in arduino cloud.... Shit register use 👏

@TheBypasser Рік тому

1. This lacks 'I' in 'GPIO' ;) 2. This is not that 'unlimited', although we used an alike approach in order to get 96 outputs without issues. 3. Too slow, mostly useful for static LEDs or relay driving or alike, yet that is the limit.

@HelderParracho Рік тому

Why don't you use SPI to control the shift registers and get rid of all that show code?

@damnuser7792 Рік тому

Not a new idea, but there is a trick: try to order PCA9505, my favorite port expander, then see MOQ and lead time! Americans screw up badly going against Russia and forgot where raw materials are coming from, so "all american-made chips" actually made in Taiwan cannot be produced any more... Does not matter if you are after Arduino-grade projects, but even Arduino (Atmega) chips where produced by Microchip and NOT available any more, all what is left is stock in some places. Unless something changes dramatically, we will end up using transistors... As for some comments below, India has a lot of very good engineers as well as large hobby community.

@mikejones-vd3fg Рік тому

kool

@lkdhruw Рік тому

Even though I have used these ICs a lot of times but still I got to know some new information 👍

@techiesms Рік тому

Glad to hear that

@varunkoganti9067 Рік тому

Just use a pca9685 you get 16 pwm capable gpio. Each 9685 has 4 i2c address sel bits so 0000 to 1111. That means 256gpio per i2c in theory.

@Ncky Рік тому

And you can also use i2c mux which gives even more possibilities

@andreadm4578 Рік тому

Rapaz não entendi nada do que ele falou mais deu pra entender com a imagens

@ravindrakulkarni4359 Рік тому

How to join premium member I don't have credit card

@nagarava Рік тому

Can I use Esp01 in place of Esp32 with this code?

@techiesms Рік тому

Yes Just change the PIN number

@Stillalive008 Рік тому

It's okay. Give more videos like this

@isaharoon1000 Рік тому

Good explanation of shift registers, but this aint GPIOs (General Purpose Input Output). There is only output here, no input.

@aykutulusan6728 Рік тому

74XX595 is the worst choice, ns-level spike changes all outputs (ns:nanosecond)

@Midhun938 Рік тому

🤔🤔🤔🤔 what is the thing bro. I couldn't get the whole point. Can you please make a vedio that uses this shift register setup to control something more simpler & straight forward. Something like iot control

@techiesms Рік тому

Sure. I'll making a practical working project out of it

@RandomTorok 5 місяців тому

Doesn't work. Might help if a readable copy of the circuit diagram was provided.

@ba7o71 Рік тому

😘

@lolaa2200 Рік тому

I'm sure this would be very interesting to some but the title is a lye so ... What you show is about adding digital output, not GPIO. GPIO does much more than just digital outputs. Title promesse you might present a chip that allows actual gpio extensions, and you don't deliver on that. Hint : MCP23s17 ;c)

@farmerjoe2103 Рік тому

A bit like a USB hub accepting eight inputs into one.

@Tech-farming880 Рік тому

Hindi ka ek channel creat karo our same video usme bhi upload krdo.

@techiesms Рік тому

Dekhte h, aisa kuch socha nai h abhi

@user-mr3mf8lo7y Рік тому

There is no such thing 'unlimited'. a) adress block/range is limited. b) MCU's flow capacity may not be capable of handling all of those requests fast enough.

@SaverioFerran Рік тому

Indian videos usually are great. I've solved severa problems with them. But, but... Their pronuctiation is not very well 😅🥺. If only indias could improove their english, their videos would be sooo much better. I understan their mother thounge has different sounds than english. But it is just a friendly advice 😊👏🏻

@steelbrotherhoodof2359 Рік тому

another word for simultaniously is on some place "real time".

@janklas7079 Рік тому

it's a bit of nagging, but it's not unlimited. Eventually you'll run out of frequency for your serial coms.

@RaulAyanami 3 місяці тому

So.. no pwm

@duality4y Рік тому

what is a GPIO and why is a pin on that register NOT a GPIO

@cpK054L Рік тому

No shit the MUX will only control one-output at a time. Just MUX to PsuedoDAC-R2R, problem solved, plebes

@FARMAN68 Рік тому

Yaar Agar English me samajhna itna hi asan hota to seedhe Kisi Gore ki video dekh len ham. Tumhari video kyun dekhe. Agar ham Indians ki help karna hai to please Hindi English ko mix karke bataya karo. Aur point ki chize Hindi me hi bolo. Thank you 😊

@vishnubalte1184 Рік тому

Plz meke video in hindi language bro ,

@CristiNeagu Рік тому

Shift registers won't get you unlimited GPIO. It will only get you outputs, but no inputs. Why not just use multiple MCP23017 IO expanders? That will give you true unlimited GPIO.

@HelderParracho Рік тому

No, that's not true. You can cascade multiple hc165 with hc595 and have all the GPIOs you want, or only inputs or only outputs.

@CristiNeagu Рік тому

@@HelderParracho Ok, fair enough. MCP23017 is still the better choice.

@HelderParracho Рік тому

@@CristiNeagu Better or not it really depends on your needs. MCP23017 is more expensive, harder to find in stock, much slower and more difficult to isolate. It might be a more compact solution though.

@indian.techsupport Рік тому

You just made outputs, not general purpose input and output

@ionymous6733 Рік тому

asking people to pause and comment for something you're about to explain is insulting. As if we don't realize we're watching a pre-recorded video or that comments help your channel. "jump through my hoop!" Just make good content and skip that.

@RavindraSingh-jw2sm 5 місяців тому

Element 14 ka video chipka diya .

@croydon21H Рік тому

You struggle so much to give details easily. The thumbnail is much and you make a whole video with shift register

@keen2461 Рік тому

Don't take it wrong, but it'd be nice to put a little effort on pronouncing english better. The strong indian accent makes it very hard to understand these, otherwise, great videos.