Tutorial 14 for Arduino: Holiday Lights and Sounds Spectacular!

[dangersdnb]

great tutorials, I have been watching every episode over the past week or so, but seen them all now :( please bring out some more lol

[lennyhome]

No offense but your op-amp rectifier circuit is flawed in more than one way. Take your time and simulate your circuits in SPICE before spreading mistakes.

[sciguy14]

@lennyhome Would you like to elaborate? I'm intentionally trying to keep it simple, and use a low-component count so it is easy for beginners to follow. I didn't claim to have exceptionally robost amplifier circuit in this video, just something simple that would do the job. I always appreciate feedback, please feel free to email me via the contact form on my website to elaborate on what you don't like about the circuit, etc.

[lennyhome]

@sciguy14 It's not about me liking or disliking your circuit. In the schematics at about 5:00 in your video you have an op-amp followed by a parallel RC circuit. And there are other issues too but I guess you'll find out while you learn.

[contrist0]

@sciguy14 Glad you keep it simple :-) wife gave me the go ahead on getting a uno starter kit next week! Been watching your vids in my cube at lunch!

[russotragik]

what's next Jeremy?

why not a graphic color LCD? =)

[skizz0id]

Great tutorials, Jeremy. THanks for providing them. I am just starting out as a hobbyist in electronics and your vids have enlightened me a good deal in a very short time. Please carify this for me . I am confused. I read an electronics book that " CONVENTIONAL CURRENT FLOW IS FROM THE POSITIVE TO THE NEGATIVE TERMINAL IN A CIRCUIT BUT THAT THE FLOW OF ELECTRONS IS FROM THE NEGATIVE TERMINAL TO THE POSITIVE TERMINAL."

wHaT?!! Doesn't current flow in the same direction as electrons?

[sciguy14]

@skizz0id When Benjamin Franklin was first investigating electricity, he incorrectly assumped that the current carrying element was positive (protons), but it was later discovered that electrons are the mobile component. Alas, the standard had already been defined, so now we're stuck with this. Current flows in the same direction as positive "holes", but opposite of the direction of negative electrons.

[prab03]

you my good sir are very smart and make it look very easy

[Z2m8l0]

You are so smart, and your videos are so easy to understand, great talking and teaching! Keep it up!!!!!!!!

[kasperfish]

I went through all your tutorials but even don't have an arduino (yet :-) Very clear tuts, thumbs up!!

[sciguy14]

@kasperfish Thanks!

[minniman1234]

Please more, thanks so much , you are AMAZIN, keep em comin!!!!

[deaforganist001]

I don't think you realize just how important your work is.

You are young and you are speaking at a pace useful only to young people. If you spoke more slowly (like radio and TV announcers do) then old guys who hear differently could pick up enough info to motivate grandchildren.

That's how I will use this knowledge and people like me can take you far. We simply cannot understand your words at this speed.

[thelethalmoo]

gunna get myself one of those rasberry pi things when they come out to try teach myself a bit more about this kinda stuff

[109190109190]

what is another way to supply power to the lights?

[sciguy14]

@109190109190 Other than the computer power supply? Use a 5V wall wart spec'ed for 3 amps.

[Shockszzbyyous]

what is a wall wart?

[sciguy14]

@Shockszzbyyous a power transformer. The brick that plugs into your wall and outputs regulated DC voltage. Your phone probably uses one.

[RavenRof]

Whats the music name? ;)

[sciguy14]

@RavenRof Custom music by amiller90 on youtube

[MrMaxymoo22]

@sciguy14 I'd really like the name of the song, it's really good!

[RavenRof]

Thank you! i missed these!

[tlfort]

Awesome.....bout time!

Great video series btw!

[aerofart]

Well done, Jeremy. I always enjoy the quality & content of your videos.

In this video, I like the way you explain the pre-amp circuit and the code that goes with the LED strip.

It would be cool if in the future you could do a VU-METER circuit using discrete components. It would be a good example of using a MUX.

TIP: In the future, you might consider stopping down the camera aperture when you video LEDs so that they don't wash out.  This will give the lghting effect greater visual impact.

[sciguy14]

@aerofart Good advice regarding the aperture. Thanks!

[HampusSandberg]

Great tutorial, bought an op-amp a while back so I'm gonna try this out. Where did you get those trimpots with the knob?

[sciguy14]

@HampusSandberg I'm actually not sure... just found them in my box-o-junk. Possibly from parallax.

[HampusSandberg]

@sciguy14 Found it! The item-code on parallax site is: 152-01031 if someone else wonders what the trim-pot is.

[Simonthadude]

You're one of the biggest reason that I finally bought an Arduino UNO starter kit and when I see this I can't wait to start building cool stuff like this! Merry Christmas!

[4moreki]

This is a great tutorial. Thanks!

[nistvan86]

Amazing! I need to watch this again to understand fully.

[heyhey1385]

The Link to your website is broken

[sciguy14]

@heyhey1385 Fixed it. thanks!

[mabvsfd]

Welcome back, and with a 32 minute banger :D Thanks man :D

[zechenife]

Yeah Jeremy, I was missing your tutorials brother.

[yourtube2456]

a little late to upload this don't u think?

[sciguy14]

@yourtube2456 It's been available on element14 for a week already. Gotta follow my tweets!