Rotary Encoder LED Ring Overview
Вставка
- Опубліковано 18 бер 2011
- mayhewlabs.com/products/rotary...
You can purchase these at Sparkfun.com:
www.sparkfun.com/products/10407
www.sparkfun.com/products/10408
www.sparkfun.com/products/10409 - Наука та технологія
Rotary encoders translate the position of a rotary shaft to a binary code. The shaft closes some contacts as it rotates, and the encoder reads them as bit values, making the output.
A 10-bit encoder has a full range of 1024, so it will output 512 when the shaft is half way, etc.
It is used in robot joints sensors, game controls, instrument knobs, etc. Here, each LED has asssigned a set point value. Each LED will lit up for as long as the encoder output is higher than the LED's set point.
It looks awesome!
thanks for posting the video, I am purchasing this now for use on my amplifier
are you asking about how to setup a rotary encoder in general, or this specific device? I had the same question too. I was going to use it for my ampllifier
Nice Layout!
Look up "mackie control c4" or "nord lead" as examples. Remember the rotary encoder is not like a potentiometer. It just keeps turning forever, much like the tuning knob on a car stereo. On the stereo you have a display to tell you what frequency you're turned to. But if you are using the encoder for other purposes, it can be nice to have a visual indication of what position the control is set to.
@ Thetechadmins,
thank you for reminding me how its done...
Hello, can you tell me - will this board cause interferences to a pot when it in very sensitive place on circuit? (for example, pre-gain in amps)
Can this be wired to pulse from one end to the other with the sound of music?
Yeah, I looked at the specs for it, it makes somewhat more sense than I thought. I initially thought the chip was an atmega or msp430 microcontroller, but its just an SPI shift register. Thats actually a GOOD thing, as you dont have to sync up whatever the microcontroller would have thought the position was to whatever your project thought. From the comments though you can tell that even this VERY simple device is WAY beyond the capabilities of most people, which is sad.
I struggled over the wording of my reply @railpressureflip for this very reason! You're right htomerif, the encoder doesn't have a position! So if it is being used instead of a potentiometer, as a component of a programmable control surface, an LED ring can give the operator a visual cue of the value of the parameter it controls, similar to the "position" of a potentiometer (which would be marked on the knob with a pointer)..
Can be very useful for any variable control like Volume, bass etc.
"Arduino board" ..second time i've seen that recommended! Will do, and thanks!
p.s. cool rotary control, is it expensive?
I need the arduino to function as sequence? just want the volume control with LED plate that you recommend?
But can you still use the pot as a pot? or do you haft to use a dual channel pot to have any practical use out of this?
I've been restraining myself from buying a few of these!
Didn't have a project in mind,
not that ars gras artis isn't a reason!
Now sparkfun do the Si4735 on a breakout board, I'm thinking of an Arduino AM/FM/shortwave radio.
These would be great for tuning, volume.
Thats great Basil, but what does it do?
Just wondering if th right piece of code this could be used as a digital lock for a safe or something, is it possible?
I have a question is already programmed sequence led or you have to make this?
what did you use to adjust the brightness of the leds???
im trying to build quadrocopter. there would look pretty neat on controller as "gas" or "power". dunno if im going to fly in dark nights
This is so cool!!
is the encoder a push encoder? or just a regular encoder?
Hehe this would make a nice digital lock like those on safes.. turn 10 right, 20 left, 4 right ..etc ;)
now here instead turn 4 right then press down, 8 left press down, 4 left again (hehe) press down..
can make some crazy combinations with this thing.
Looking cool
I want to use these to build a midi controller with the Livid Brain kit....but I'm not sure how the LED matrix would work with the blue ones....would these have to be wired directly?
No problem. I'm a very understanding person. I doubt one book would do the trick. But what book would be a good starting point do you think? On a scale of 1-10 on knowledge in this field I'm about a 2. So what book would you say, for me? Thanks in advance.
I see some people wanting to use this as a volume control, I don’t think it’s going to work directly replacing it. Volume knob is a potentiometer (pot, or variable resistor) this one is digital (and it rotates endlessly), meaning you have to convert the signal. But I’m not 100% sure so check before you get one if this is your application.
You should research the Arduino Board. It's a USB programmable pcb.
You'll be able to answer your own question via new knowledge plus imagination. :)
It's really a fun hobby. And the Arduino board is greatly universal. They have starter kits with beginners guides.
Hope this helps!
Great story man.
are the green leds really that dim or is the video messing with the brightness?
I just happened across this video as I was having a thought. Potentiometer knobs used in midi devices can switch between different targets, and because they are finite will not update their position to the new target's value until they have rotated to the point where they "pick up" the new value. Encoders are super because they can immediately update to the new value. Would there be a way to use a chip such as this, where the led feedback is synced to information from a DAW, but with a pot instead of an encoder?
Basically, it would be able to quickly show where you need to rotate a finite pot to to "pick up" the data value coming from a new target.
Please did you ever figure this out
some newer guitar amplifiers use that light stuff . coolness
could you have 1 dial but press it and make it move to the next
AND
do you have to assemble it
Almost perfect but why did you use an analog pot to adjust the brightness and not the encoder itself ?
Wow. You've said it all lol. Sorry about that, hope things get better.
what are these diodes called,every time i google i get results for the round bulb ones,but these are much smaller and more efficient,please help :(
This will be awesome in a guitar's volume.
Hi! What's that for a circuit board?
The maximum brightness of the blue LEDs are impressive.
Looks amazing! But can anyone tell me what this can be used for? :)
I WANT ONE , what do they do?
Wow! you found a use for 15 of them? I cant imagine a use for one.
Well, I tell you, this is perfect device if you want to build interface for synthesizer such like "Moog Little Phatty" (or "Nord Lead 3").
Amigo Me Podrías Decir Como Se Llama Este Tipo De Placa Por Favor Gracias !!
on top of that, the open source means TONS of code is available via the web to do just about anything. I havnt seen a microcontroller that was so easy to use
Very nice , i will told to my kids ! very smart....
Interesting... I thought about building something like this manually. (trying to build a speedometer for a train sim actually,). I worked out to get sufficient accuracy I'd need about 100 LED's, but the wiring for it seemed rather daunting. - Though it's still cheaper in principle than building an analog gauge... At least, if I used servo motors, anyway...)
For which the inputs ENCA ENCB SWITCH clk le oe sdo ???
Pretty much anything that need to be displayed in positions with nice brightness.
What would be a good alternative for this product? Since this one is discontinued...
Please did you ever find out
awesome music....
What's the name of this rotary button?
Synth? Midicontroller?
Well, you can make a fancy volume control for some speakers.
It sucks that it can't be purchased any more! wonder why they stop manufacture..
Yup you are actually right.
PLEASE, start selling these again!
my idea for it volume control with led rotary scale very cool..
Why you build this project for so rare microchip? Where I get him? Send order to China for couple ones?))
this can be used for a stereo's volume regulator
"Nord Lead 3" synthesizer uses 26 :)
NICE
Nice...
More or less, how to interfae the rotary encoder with an Amplifier... I normally use potentiometers but this seems soo much cooler! :)
Anyone got any ideas how to set this up for a volume controller?
I'm sure this has already been said, but the Akai APC40 uses these.
would be cool sound switch
is there something like this on ebay? sparkfun is over $15... !!!
is there no audio or is my computer sick ?
cool
One wonder if there is some one holding a few in stock...
I wish... I think you and I want these the same
Found two vendors just do a google search on(Rotary Encoder LED Ring)
dj controllers ?
It can be used as a cool volume control :p
how much is ?
can this be made into a lock for a locker or something lie that ?
If you have the programming skills, yes
safe breakers wouldn't be able to put their ears to the LEDs to hear the clicks when doing ...... 2 turns left ..... 3 to the right :D
DjAlanBarratt A Safe with a µController is near impossible to crack without demage on the Safe.
want this for my car speedometer
what kind of LEDs are that ?
112dutchboy 0806 SMD or larger by the looks of it
is there are any practical function? where I could use that? give examples.
Rotary LED encoders are very commonplace in modern synthesizers. Stop by your local Guitar Center and check out synths by Moog, Roland, Korg, Yamaha, etc.
MelectroU How about just looking awesome even if they don't actually do anything?
Its available at sparkfun for 16$
and yes arduino is cool
it's just a toy for arduino ?
good
Is the board files available? I want to make this myself
No. I couldnt found it anywhere:-(
On Sparkfun you can find the schematic:
www.sparkfun.com/products/retired/10408
You could create your own version with KiCad or other CAD programs very fast.
But for higher current LEDs you need a bigger voltage regulator. For example, if you want 10 mA per LED, this is 160 mA. If you use a 2 V voltage regulator with 5 V input, it needs to dissipate 0.48 W. With a LP5951 voltage regulator, same size as you can see on the board, only 150 mA is allowed, and it would heat up to over 100°C. But might be not a problem, modern LEDs are really bright with much less current, like 2 mA. But then you don't need the voltage regulator at all, because the TLC5925 can handle 5V and 3.3V input and wouldn't even get warm.
I was actually going to build it from scratch for my next project, but thanks.
"Nord Lead 3" doesn't have ordinary rotary encoders. It has those with LED rings.
"So I used a LED dimmer to control the brightness of my other LED dimmer! Ain't I awesome?"
um.. a rotary encoder like this one doesnt really have a "position". Usually its just two phases that run through a binary sequence so you can tell which direction its being turned.
This means that if this encoder has say 20 detents, the starting position will be identical to the position turned 72 degrees forwards or backwards.
There are MUCH more complicated kinds of rotary encoders in things like AC servomotors, providing true 360 deg. resolution down to the degree level.
THe Future is coming i know !
You see this and you have no idea of the possibilities? It is a control knob with an led indicator of its position.
this can not be use for the gauges in the car??u know ,when pres gas goes up and the rpm goes to..i just taught ..
very hot. i dig it
SMD LED = 0603? 1206?
I thought it was a triple core flux capacitor with 3, 1.81 gigawatt chips
МУЖИКИ! ГДЕ ТАКОЕ КУПИТЬ МОЖНО?
These are in the avid venue boards
Google "Moog Little Phatty" or "Nord Lead 3" :)
im not sure,i think they're called crystal diodes maybe??
I didn't even notice the green was on :P
to emulate a pot that can be freely positioned by a microcontroller :)
Is it just me, or is most visible color Blue in this video? The camera appears to pick up Blue the best.
There are €13 for each. I need 15 of them. That's too expensive. Hope i can find alternatives
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