The issue is from the dimmer, which is likely using PWM or pulse width modulation. Using a potentiometer to limit current would give you the results you're looking for without the feedback. I figured this out when I tried to make a tremelo pedal using a led/ldr/arduino arrangement.
^^ 100% correct. You could also implement a power supply pedal, maybe using a slimline pedal case so it can be stuck to a pedalboard without taking up much room, that injects the DC power using a single patch cable with a stereo phono plug, using one channel for the LED’s voltage, and the other for the signal. That way you just have one jack and one cable, plus you could add a battery pack in the pedal, and maybe a knob for selectable dimming levels via linear regulator to avoid the PWM noise. It could technically be achieved with a standard mono cable (this was my first idea), it would just use a capacitor to remove the DC after the LED’s tap off, however that would leave open the possibility of someone coming along and plugging it into a regular guitar and frying their pickups. Using a stereo phone plug provides an extra isolated tap, but still leaves it mostly standard. I think the guitar could even still work with a traditional mono cable/signal chain when you don’t need/want the lights.
A potentiometer playing limiting resistor for so many LEDs is going to die pretty quickly. What he is looking for is an adjustable constant voltage source, which would require an opamp and a power transistor. Usually, pots are rated at 1/8 Watts, and running lots of current through them is going to quickly boil off the carbon track that the wiper rides on. That many LEDs are going to draw a couple hundred mAs, which at 12V supply voltage is easily going to be much more than the pot is rated for.
@@seanedwards773 Constant current is going to be difficult because you cannot guarantee that all LEDs will behave equally, and thus some will draw more current than others (those LEDs are all in parallel - CC would be the better method if they were in series) - driving them with constant voltage is actually easier (but you need current limiting as well). PWM can be done also, but you need to drive the switching frequency up way outside of the audio range and introduce low pass filtering in the signal path. The main issue with cheap LED drivers is that the switching frequency is too low.
I feel like this vid is such a solid example of the evolution in someone's art thought and planning processes. Maybe this is a wild assumption, but if you had the idea "stone guitar" earlier on in your experimentation, I think it would have been like the salt guitar. Forging ahead with a material and it comes out just heavy as hell, but here it is! It materialized! And that stage of figuring out your art is important. Just plowing through and *doing the art*. Then we get to this. There was so much focus in this video-from jump, from the very first stages-on planning for actual usability, caution about the weight based on the material. Amendments to style at every step based on what you've learned and experienced with other materials and processes that have made the final pieces unwieldy or not-quite-right. And you guys firmly nailed it!! You may intimately know any flaws and shortcomings from having your hands on the process, but it literally gets more and more impossible for us, as viewers and observers of your art, to see those from the outside. It just looks and sounds drop-dead gorgeous. Thank you for another incredible (and inspiring) video.
I watch all your builds and most of the time I like them and appreciate your process.... These two are just something above your other builds .... Amazing
when we listen with our eyes, we can be fooled, after all, that's part of the reason for the LEDs :) , however, they don't sound bad, they sure have their place for usability.
You are the best I know you only have so much time but I really enjoy every project that you partake in and you're the best at what you do please keep these videos coming I enjoy them very much thank you so much and God bless you
LEDs tend not to go for actually dimming since the brightness is nonlinear, and instead dim via PWM. This means that instead of actually dimming to 50% brightness, they just turn on and off really fast so they are only on 50% of the time. This switching created the feedback you heard. Then it makes sense that making it brighter decreased the feedback since it would switch less regularly (probably smaller low-frequency components, so less audible feedback), and full brightness stopped it. Less than 50% may have decreased it as well. While fully on or fully off, it stops switching so there is no extra signal to pick up. Given the high frequency, you may have been able to clear it with a low pass filter, but that would also affect the tone of the guitar, emphasizing the lows and reducing the highs. Of course, just setting them to full works too. Perhaps you could also find dimming LEDs with a higher switching speed so the feedback isn't audible.
It would be interesting to try switching out the LED strips with a light emitting polymer sheet. It could be adhered directly to the top instead of the diffuser sheet. The light would be evenly distributed and it might help with the feedback.
In these last 10 years or so I have seen virtually every single guitar build on RUclips, so it’s unlikely I see something that amazes me. However, this build definitely does. Jawdroppimg masterpiece, hats off, you are the Master.
I really look forward to the wild builds you do with different materials, and this is why. These are absolutely gorgeous! Brilliant work as always, keep doing what you're doing
I enjoy the leveling up across these videos. I remember watching the original colored pencil video and thinking "That's cool, doesn't look too hard, maybe I could do that." Now I watch these and think "Man there's no way I could do that"
You never disappoint! I like that you highlight crucial details and drawbacks or fails on design but now you’re getting so experienced there’s less of those with each video. Big fan and love what you do. You pack months of trial and error and brainstorming and frustration and execution into these tight videos 😮
This is one of the sickest builds(x2) yet, Burls. They're things of beauty, for sure. I really like the use of the LEDs with the translucent stone. Thanks for sharing this with us. Keep the builds coming!
have been a subscriber and fan for a long time now and it's amazing to see that you keep pushing the boundaries of what a guitar can be made of, dude! keep it up!
I’ve been watching your videos for a long time and I am absolutely blown away every time but I think these are the most stunning pair of guitars you’ve designed and built. Beautiful!
If you ever use LEDs in a build again, highly recommend checking out COB LED strips. They have way more LEDs that are super narrow, and have a layer covering them, and are so all close together it looks like a single glowing strip instead of having gaps/the individual LED look. I've used them in a couple projects of mine, and much prefer them to standard LED strips now.
Really cool stuff, its been such a pleasure watching the quality of both your builds and your videos go up over the years. The finished product with these is so cool, and such a unique design. I know the focus is on the body, but the woods you used for those necks are both gorgeous
5:48 That's a trapezoid, not a pyramid. Also, the "feedback" from the LEDs dimming is because they're controlled by PWM (pulse width modulation), which basically blinks them really fast to control brightness, and that process generated frequencies in the audio range that get picked up by the pickups. You need to isolate your circuirtry in a faraday cage (aka conductive box) to eliminate this feedback, or at the very least, use shielded wring everywhere and surround only the pickups in a conductive, grounded box.
A trapezoid is a descriptor of a 2 dimensional quadrilateral with only two parallel sides and (usually) two sets of congruent angles. Trapezoid only exists as a cross section of a 3d object. Burl's shape was a truncated rectangular pyramid.
I've been following your channel for a very long time (Since the apoxy river guitar) and I have to say, these 2 guitars are your absolute best work yet. You could make a signature series for these for sure. They look absolutely beautiful.
It’s always a nice surprise to see a Burls Art video show up in my feed. As others have mentioned, that noise from the LEDs and dimmer are from the PCM dimmer. Two possible solutions are to find a supply/dimmer with a switching frequency far above the audio spectrum, or put a filter on the LED’s power jack. It might be as simple as adding a capacitor across the positive and negative leads and an inductor in series with the LEDs.
The bizarre placement of the microwave, fork and plate in the shop are low key genius. I seriously watched the add segment on accident because I was too puzzled to skip ahead like I usually would.
I don't know if it's the pickups or the construction of the guitar but the clean tones sound really nice. You know I could see a segment of the population really appreciating the lit up face of the guitar. You did a really nice job it must have taken a lot of planning and a lot of redoing of certain steps. Bravo. 👏
You’ve outdone yourself! And no major disasters in this build on the way to such a stunning result? I’ll take one in an RR shape with reverse headstock 😊
in the mid 80s i carved out the cavity behind a garbage strat copy , added battery Christmas lights . aluminum foil . and clear pick guard . THis is great Thank you .
I have Phat-Cats on my Grizzly Kit guitar -- back when they sold the Samba Firefly. Absolutely stunning Pick-Ups! Great choice! Beautiful work, I love the look of the chamfered edges.
This is truly incredible!!! i would love to own one. Wow. Please do more in the future. Would love to see what it would look like with different colour LEDs, or if the stone can have different colours.
Seems like there'd be a lithium ion rechargeable LED option out there with a type C recharge port on the side of the guitar. It doesn't take a lot to power an LED so I'd think there has to be a rechargeable battery LED option out there that would work as good if not better and not cause any noise. Idk ..just something to consider for future crazy builds🤟😁 They look so cool man! Nice job, have a bit of a hollow body tone to them.
For the LED, you should try to use a dimmer with a PWM frequency above the human hearing range, like 30 kHz. Going lower frequency helps with sound, but then it will flicker. The PWM frequency is always set on a particular dimmer, but you don't hear anything at 100%, because the duty cycle is always on. Alternatively you could dim them lowering the voltage, then you don't have this problem.
The most gorgeous guitars I've seen. They're like looking at a harvest moon and I love it. Only note: Since the backs are removable anyway why not give the LEDs a small rechargeable battery inside and use a color changing set?
Use code 50BURLS to get 50% OFF plus free shipping on your first Factor box at bit.ly/3BJNKPZ!
I mean, this HAS to be the best guitar for playing rock...
Do you think this is better for hard or soft rock?
@@lovescarguitar "Light" rock obviously.
@@le_fancy_squid Stoner Rock. Kyuss, here we come.
I could be mistaken,@@lovescarguitar, but I believe he mentioned it was granite, so hard!
*groan*
The issue is from the dimmer, which is likely using PWM or pulse width modulation. Using a potentiometer to limit current would give you the results you're looking for without the feedback. I figured this out when I tried to make a tremelo pedal using a led/ldr/arduino arrangement.
^^ 100% correct.
You could also implement a power supply pedal, maybe using a slimline pedal case so it can be stuck to a pedalboard without taking up much room, that injects the DC power using a single patch cable with a stereo phono plug, using one channel for the LED’s voltage, and the other for the signal. That way you just have one jack and one cable, plus you could add a battery pack in the pedal, and maybe a knob for selectable dimming levels via linear regulator to avoid the PWM noise.
It could technically be achieved with a standard mono cable (this was my first idea), it would just use a capacitor to remove the DC after the LED’s tap off, however that would leave open the possibility of someone coming along and plugging it into a regular guitar and frying their pickups. Using a stereo phone plug provides an extra isolated tap, but still leaves it mostly standard. I think the guitar could even still work with a traditional mono cable/signal chain when you don’t need/want the lights.
he should go full send, build a guitar with a 48v phantom power mic jack, but only use the phantom for lighting the LEDs.
A constant current power supply could also work. But definitely avoid PWM, which is usually the cheapest way of doing the brightness control.
A potentiometer playing limiting resistor for so many LEDs is going to die pretty quickly. What he is looking for is an adjustable constant voltage source, which would require an opamp and a power transistor. Usually, pots are rated at 1/8 Watts, and running lots of current through them is going to quickly boil off the carbon track that the wiper rides on. That many LEDs are going to draw a couple hundred mAs, which at 12V supply voltage is easily going to be much more than the pot is rated for.
@@seanedwards773 Constant current is going to be difficult because you cannot guarantee that all LEDs will behave equally, and thus some will draw more current than others (those LEDs are all in parallel - CC would be the better method if they were in series) - driving them with constant voltage is actually easier (but you need current limiting as well).
PWM can be done also, but you need to drive the switching frequency up way outside of the audio range and introduce low pass filtering in the signal path. The main issue with cheap LED drivers is that the switching frequency is too low.
Probably the prettiest builds so far. They do look amazing. You've done a fantastic job on these.
If not the prettiest, it looks the most difficult, an extraordinary piece of cratfmanship
New Burls Art video? Dropped everything I was doing to watch
same lol
Same. I was in the middle of a quadruple bypass and the surgeon had to wake me up for it.
Same, and since I was playing with my baby, I'm going to jail in a week
Was in the middle of jury duty, HAD to watch
@@sireffortlessgarbage7922 did you show the judge? I bet he owns a PRS.
Always a lovely day when Mr fancy guitar posts
I feel like this vid is such a solid example of the evolution in someone's art thought and planning processes. Maybe this is a wild assumption, but if you had the idea "stone guitar" earlier on in your experimentation, I think it would have been like the salt guitar. Forging ahead with a material and it comes out just heavy as hell, but here it is! It materialized! And that stage of figuring out your art is important. Just plowing through and *doing the art*. Then we get to this. There was so much focus in this video-from jump, from the very first stages-on planning for actual usability, caution about the weight based on the material. Amendments to style at every step based on what you've learned and experienced with other materials and processes that have made the final pieces unwieldy or not-quite-right. And you guys firmly nailed it!! You may intimately know any flaws and shortcomings from having your hands on the process, but it literally gets more and more impossible for us, as viewers and observers of your art, to see those from the outside. It just looks and sounds drop-dead gorgeous. Thank you for another incredible (and inspiring) video.
I've been around guitars and other instruments damn near all my life; custom drums, guitars..but I've never seen a custom guitar like this! Crazy!!!
It’s always a good day when Burls Art uploads a video.
I watch all your builds and most of the time I like them and appreciate your process.... These two are just something above your other builds .... Amazing
Wow..Is it just me or is the one of the best sounding guitars yet?
I thought the tone was pretty good too. Shall we start a debate on which _stone_ is best for making guitars?
when we listen with our eyes, we can be fooled, after all, that's part of the reason for the LEDs :) , however, they don't sound bad, they sure have their place for usability.
Especially the clean tones - crystal clear.
You are the best I know you only have so much time but I really enjoy every project that you partake in and you're the best at what you do please keep these videos coming I enjoy them very much thank you so much and God bless you
these builds only get better and better. super cool to see how far you've come. great ideas and executions, learning more with every project
LEDs tend not to go for actually dimming since the brightness is nonlinear, and instead dim via PWM. This means that instead of actually dimming to 50% brightness, they just turn on and off really fast so they are only on 50% of the time. This switching created the feedback you heard. Then it makes sense that making it brighter decreased the feedback since it would switch less regularly (probably smaller low-frequency components, so less audible feedback), and full brightness stopped it. Less than 50% may have decreased it as well. While fully on or fully off, it stops switching so there is no extra signal to pick up.
Given the high frequency, you may have been able to clear it with a low pass filter, but that would also affect the tone of the guitar, emphasizing the lows and reducing the highs. Of course, just setting them to full works too. Perhaps you could also find dimming LEDs with a higher switching speed so the feedback isn't audible.
these might be my favorite guitars you've made. I've been watching since your first one and I'm always stoked to see what you come up with next!
Killing in the Name at the end is just icing on the cake
It would be interesting to try switching out the LED strips with a light emitting polymer sheet. It could be adhered directly to the top instead of the diffuser sheet. The light would be evenly distributed and it might help with the feedback.
In these last 10 years or so I have seen virtually every single guitar build on RUclips, so it’s unlikely I see something that amazes me. However, this build definitely does. Jawdroppimg masterpiece, hats off, you are the Master.
I really look forward to the wild builds you do with different materials, and this is why. These are absolutely gorgeous! Brilliant work as always, keep doing what you're doing
Stunning build as ever! You might be the most creative of all the guitar builders on RUclips.
These are sick you should do the same design but with a lavalamp inside hahaha
That would be tuff
I enjoy the leveling up across these videos. I remember watching the original colored pencil video and thinking "That's cool, doesn't look too hard, maybe I could do that." Now I watch these and think "Man there's no way I could do that"
I'm always blown away by your craftsmanship. I look forward to the day I can build instruments like you do.
This is crazy! I love your videos, i was really inspired by the infinity guitar you made as well, and have started making one.
Love a Burls Art upload
You never disappoint!
I like that you highlight crucial details and drawbacks or fails on design but now you’re getting so experienced there’s less of those with each video.
Big fan and love what you do. You pack months of trial and error and brainstorming and frustration and execution into these tight videos 😮
This is one of the sickest builds(x2) yet, Burls. They're things of beauty, for sure. I really like the use of the LEDs with the translucent stone. Thanks for sharing this with us. Keep the builds coming!
'Efficiency in the shop is key'....** has a microwave in the ceiling**
These are some of the prettiest pieces I've seen. Well done
have been a subscriber and fan for a long time now and it's amazing to see that you keep pushing the boundaries of what a guitar can be made of, dude! keep it up!
Really really lovely job.
Very impressive sound, they look
BEAUTIFUL.
Great job
👍🇬🇧
I’ve been watching your videos for a long time and I am absolutely blown away every time but I think these are the most stunning pair of guitars you’ve designed and built. Beautiful!
If you ever use LEDs in a build again, highly recommend checking out COB LED strips. They have way more LEDs that are super narrow, and have a layer covering them, and are so all close together it looks like a single glowing strip instead of having gaps/the individual LED look.
I've used them in a couple projects of mine, and much prefer them to standard LED strips now.
Very clever improvising during the build and it shows in the results.
WoW!! You really took it to the next level on these. Its really awesome to see how your skill grows with each build. Kudos brother!!
Love how professional you are every time with those tools. Every build you make is craftmanship!
Just.. WOW. These are utterly BEAUTIFUL pieces of art!!!
Finally another build! This one is unreal
Gorgeous! You have the coolest ideas. Your execution of those ideas is excellent!
Really cool stuff, its been such a pleasure watching the quality of both your builds and your videos go up over the years. The finished product with these is so cool, and such a unique design. I know the focus is on the body, but the woods you used for those necks are both gorgeous
Stunning, truly stunning guitars. I would probably say you best guitars yet. Fantastic job and always well worth the wait.
Stunning. You have the most creative guitar building channel on RUclips!
Damn the end result looks so professional! No flaws or anything. It’s been great to witness your skills evolve over the years.
Absolutely cool the way you Incorporated the meals into the commercial kind of funny but also awesome you're the best hahaha
This is a wild looking material. The guitars look amazing! Thanks for sharing!
Burls you and Tim Sway are 2 of my favorite builders. In a perfect world id love to see what a collab your 2 brains would create together
5:48 That's a trapezoid, not a pyramid.
Also, the "feedback" from the LEDs dimming is because they're controlled by PWM (pulse width modulation), which basically blinks them really fast to control brightness, and that process generated frequencies in the audio range that get picked up by the pickups. You need to isolate your circuirtry in a faraday cage (aka conductive box) to eliminate this feedback, or at the very least, use shielded wring everywhere and surround only the pickups in a conductive, grounded box.
its a pyramid
Well yeah, he said a “bit of a pyramid design”
A trapezoid is a descriptor of a 2 dimensional quadrilateral with only two parallel sides and (usually) two sets of congruent angles. Trapezoid only exists as a cross section of a 3d object. Burl's shape was a truncated rectangular pyramid.
The rock surface with the back light looks like Lava! I'm once again impressed by your ingenuity and craftsmanship.
Stunning! Brilliant idea! Great choice doing two.
With the LED llghts on, that brown colour make them look like in between planet Jupiter and the suns surface.
Love it.. ❤👍🇪🇸
I've been following your channel for a very long time (Since the apoxy river guitar) and I have to say, these 2 guitars are your absolute best work yet. You could make a signature series for these for sure. They look absolutely beautiful.
they turned out really good
It’s always a nice surprise to see a Burls Art video show up in my feed. As others have mentioned, that noise from the LEDs and dimmer are from the PCM dimmer. Two possible solutions are to find a supply/dimmer with a switching frequency far above the audio spectrum, or put a filter on the LED’s power jack. It might be as simple as adding a capacitor across the positive and negative leads and an inductor in series with the LEDs.
This is THE best work you ever made! This is #1 and a great masterpiece! AMAZING JOB! Keep up the good work!
I think these are my favorite of your guitars. Always very creative!
Great looking guitars man!! So beautiful and sounds great! I’ve been following for years now and I love the progression.
I was left absolutely speechless! Thank you for this! Truly!!
Probably coolest build yet! Love that one with the black hardware, it looks so sleek!
The bizarre placement of the microwave, fork and plate in the shop are low key genius. I seriously watched the add segment on accident because I was too puzzled to skip ahead like I usually would.
I don't know if it's the pickups or the construction of the guitar but the clean tones sound really nice. You know I could see a segment of the population really appreciating the lit up face of the guitar. You did a really nice job it must have taken a lot of planning and a lot of redoing of certain steps. Bravo. 👏
I love how creative the guitar building space has become. AWESOME build!
Simply amazing result!
I would not be surprised if this will become mainstream trend in guitar building!
Very cool. I love it. Please make a guitar neck which incorporates that translucent beauty.
You’ve outdone yourself! And no major disasters in this build on the way to such a stunning result? I’ll take one in an RR shape with reverse headstock 😊
Those axes ROCK.
You really out did yourself on these! Absolutely gorgeous! I could only dream to have one some day.
The orange one looks fantastic with the LEDs on!
in the mid 80s i carved out the cavity behind a garbage strat copy , added battery Christmas lights . aluminum foil . and clear pick guard . THis is great Thank you .
Your best work, yet. Absolutely incredible.
That shiny polish is satisfying to watch.. Make that a lil longer next time, please
I have Phat-Cats on my Grizzly Kit guitar -- back when they sold the Samba Firefly. Absolutely stunning Pick-Ups! Great choice! Beautiful work, I love the look of the chamfered edges.
Burls Art video is like dr plants or lemmino video, its a holiday and i'm all for celebrating baby.
Huh?
@@Pure_KodiakWILD_Power they are rare and people love when it happens.
As always. Just fantastic. So creative. You rock.
This is truly incredible!!! i would love to own one. Wow. Please do more in the future. Would love to see what it would look like with different colour LEDs, or if the stone can have different colours.
Great build, and some nice playing at the end!
That is absolutely f****** beautiful
I was confused about the black color on sides how it would look. But how it turned out, I am amazed to see that.
What a build. Easily my fav of your guitars so far
These are my favorites guitars I've seen you make
Seems like there'd be a lithium ion rechargeable LED option out there with a type C recharge port on the side of the guitar. It doesn't take a lot to power an LED so I'd think there has to be a rechargeable battery LED option out there that would work as good if not better and not cause any noise. Idk ..just something to consider for future crazy builds🤟😁
They look so cool man! Nice job, have a bit of a hollow body tone to them.
I’ve actually used these types of panels as a backing in my kitchen. Oil splatters are probably bleeding through it onto the wall but it looks nice
This is by far some of your best work! I'm still a big fan of the coffee guitar too. :D
You, sir, deserve more subscribers.
It's always exciting to see a Burls build video pop up.
These are the coolest so far. I could see pro’s wanting theme too
Never clicked so fast in my life! Always wanted to see a stone top guitar!
Totally wild concept, and a really good looking result. Good work as always my friends.
Wow, these are so cool! I love all your work, but these might just be my favorite. Amazing, as always.
Outstanding work! Gorgeous guitars!
some of your best work yet man! Love the black winter combo on the other one! Hell yah \m/
Honestly some of the most unique, best looking guitars I’ve ever seen
It looks absolutely insane! That flame maple neck! 🤌
For the LED, you should try to use a dimmer with a PWM frequency above the human hearing range, like 30 kHz. Going lower frequency helps with sound, but then it will flicker.
The PWM frequency is always set on a particular dimmer, but you don't hear anything at 100%, because the duty cycle is always on.
Alternatively you could dim them lowering the voltage, then you don't have this problem.
Man you have come so far! Especially with your necks. Bravo sir, bravo.
These are soooooo awesome! You are amazing! Wish I could have one of your custom guitars ❤
Your stuff just gets better and better.
Beautiful guitars which also sound great! 👍👍🎸🎸
Always so cool to see your work, Burls. Can't wait for the next one.
The most gorgeous guitars I've seen. They're like looking at a harvest moon and I love it.
Only note: Since the backs are removable anyway why not give the LEDs a small rechargeable battery inside and use a color changing set?
These are your best designs to date. This is a great look. Lights or not.