Shift-Registers + Arduino P1 EASY

[taostoner1]

Could you do one like this or 555 timers? That would be crucial, all the 555 timer videos suck.

[kdarrah1234]

@taostoner1 I'll keep that in mind, but I typically don't use 555 timers, rather just slap an 8 pin micro down.... never really needed that much accuracy

[taostoner1]

Would it be correct to think of a shift register kind of like a stack, where you just keeping pushing bits down, and then when you latch it when all your bits are pushed down?

[kdarrah1234]

@taostoner1 yea, that sounds like a good way to put it

[taostoner1]

Thats that was perfect.

[mylifestylepr]

How can this be done with an FPGA?

[kdarrah1234]

@mylifestylepr same thing i guess, you still have IO on your FPGA, so the NIOS on the FPGA would command a the IO pins to do the same thing as a micro

[modsoul]

Anyone know tge difference bw a multiplex and a shift register

[kelseyfitz1750]

i commend your incredibly informative overview. good job.

[kdarrah1234]

@kelseyfitz1750 thanks!!

[AirRaidStudios]

Hey, great video! I have a question, can I use it as input? I want to make a kind of keyboard and have 78 buttons! please answer quickly.

[kdarrah1234]

@AirRaidStudios good idea!! You wouldn't use this type of shift register though, you need something that goes the other way. Not sure what chip you need...

[kctess5]

@AirRaidStudios go to the arduino website and check out the shiftin function for shift registers. It has exactly what your talking about

[notsoscarredface]

@AirRaidStudios You're going to want a Multiplexer, which one i cannot say.

[axel1973w]

VERY INTERESTING TUTORIAL ! THANKS!

[kdarrah1234]

@axel1973w thanks!!

[MSH12391]

You can control 162 LEDs with an arduino and transistors by using multiplexing.

You said you like the idea of not adding circuitry, thought you might be interested.

[kdarrah1234]

@MSH12391 thanks, I've actually got a bunch of videos doing that as well. good looking out though!!

[drberk30]

dam good tutorial , keep up the good work..

[kdarrah1234]

@drberk30 thanks!! hope it helped!

[lucirz]

@kdarrah1234 where did u get that white board that you are putting your breadboard and things on? what's it called?

[kdarrah1234]

@lucirz its just a regular whiteboard for dry erase markers, think i got it at wal mart

[mrljthedj]

GREAT HELP!!!

[averagemale2000]

Freaking good video. Well explained. Thanks a lot for posting!!!

[averagemale2000]

Freaking good video. Well explained. Thanks a lot!!!

[kdarrah1234]

@averagemale2000 thanks, glad it was worth making!

[kdarrah1234]

@kelmis7 probably down the road a little

[kdarrah1234]

@kelmis7 yea, probably, but I would use high speed multiplexing, so only one LED is on at any given point in time... we switch them so fast that we can make it look like more than one is on at a time

[kdarrah1234]

@kelmis7 that looks cool, but it is very project specific. If you were driving LEDs, then this would be the way to go. I don't think you need the current limiting resistors for the LEDs with that chip.... you just hook up the LEDs or your segments directly to the chip... pretty cool. let me know how it works

[kdarrah1234]

@kelmis7 well, it could actually get even crazier than that if you connect shift registers to the outputs of shift registers. That would be a wild project!

[kdarrah1234]

@kelmis7 exactly! I was thinking of 1 million LED cube!

[WeAreTwoDoorsDown]

@kdarrah1234 your scaring me!

[doforumda1]

excellent tutorial man. You explained it in good detail

[kdarrah1234]

@doforumda1 thanks!

[WeAreTwoDoorsDown]

very descriptive video! can that perticular shift register do pwm?

[kdarrah1234]

@WeAreTwoDoorsDown hey, thanks a lot! I appreciate it!  Man, I'm new to these shift register things, but I don't think you can do pwm on them... Am I smelling an RGB project?

[WeAreTwoDoorsDown]

@kdarrah1234 I think you are! ;) I will search around to see what ones do PWM (I know some do).

[kdarrah1234]

@WeAreTwoDoorsDown haha, yea, there are, and I will do a video on those when I get them, cuz I'm working on some RGB stuff too

[WeAreTwoDoorsDown]

@kdarrah1234 Your always up to something... LOL