The encoder has a shuttle that is coupled to the shaft by friction. This shuttle has two stable positions, and it has contacts to redirect the pulses to the correct output. There are different variants of those things - some have a shuttle that’s disk-shaped, some have it sector- or paddle-shaped. Probably different ways to do it as well, but a shuttle is what got stuck in Dave’s encoder. Friction fit is to blame probably. Something wore out from friction and/or got stuck in grease and the shuttle can’t move. Half the time an ultrasonic cleaning bath in degreaser followed by fader lube fixes those things. The other half the time the user gets really impatient and jerks the knob around hard enough to break it internally 😂
EBE is a traditional company since the 50-ies that has produced high-quality (and high-priced) switches. In the 80s I worked in a german company that manufactured ELA systems for the railways with high-end and durable switches from EBE. Nothing was too expensive for the "Deutsche Bundesbahn" (German State Railway) back then 😉 back then they still had a lot of money, instead today they have a lot of train delays 😄 The Encoder: You could also take any high-quality encoder and connect a small uC between it and the main uC, which contains some kind of translator program to output the required pulses (I've already done this for a Roland music synthesizer, instead of a simple mechanical encoder from Alps took a high-quality optical encoder from Grayhill. The "translator" uC was an AT89C2051 with some ASM code that converted the Grayhill format to the required Alps format)
Rumpelstiltskin Paradox. You can't find the thing until you know it's name. I first heard that on Adam Savage's channel and I love that term. So many times looking for a part or tool, and that happening.
"Rumpelstilzchen" is the word you'd never find, without spelling it exactly (it's the name of a vicious troll from a fairy tale by Brothers Grimm ..I assume you know that anyway) and well, it is actually not a 'paradox' (pretty irrational contradiction), it's rather more a phenomenon ...just sayin'
i'm always straight to the "in-stock" button on digikey then price stops me finding perfect parts i can't order or can't afford lol (and they're also the only two parameters digikey can't possibly get wrong)
I found those switches you find in the cockpits of airliners for exterior lights, that has the 3 white dots on a bar-type actuator, normally found in Boeing planes. Over $1,000 a piece for those things! Of course, they were "military grade." Yeah, no. Next!
You could piggy back a esp8266 where the encoder fits in and make a phone app to control it. I was mostly joking, no the most obvious thing is to find another encoder that has a similar pin output and somehow convert the socket. I mean like boj or custom pcb?
Replacing a rotary encoder with singular buttons is kind of a no-go unless you are prepared to do manual button sequencing, they don't just click per direction turned, it's a mechanically derived rising falling pulse train on both A and B outputs, an MCU could emulate it though. Also if you really needed a long style non-conductive shaft encoder, 3d print a plastic extender for a basic one, or take a lighter to a BIC pen I guess, either works.
This encoder is an older style encoder, it doesn't have A&B phase. It has 2 directional switches, in one direction the side A pulses between Ak & Rk while the side B stays on Rk. Datasheet at 2:40
Dreh = Rotary, Impuls = impulse or pulse, Geber = Encoder.
German is so easy.
Thumbs up to StAngus....Mystery solved. We're all standing by for the *Encoder Installation Ceremony* when it arrives.
Really would be interested in a teardown of the defective encoder to find out how it works!
i second this
The encoder has a shuttle that is coupled to the shaft by friction. This shuttle has two stable positions, and it has contacts to redirect the pulses to the correct output. There are different variants of those things - some have a shuttle that’s disk-shaped, some have it sector- or paddle-shaped. Probably different ways to do it as well, but a shuttle is what got stuck in Dave’s encoder. Friction fit is to blame probably. Something wore out from friction and/or got stuck in grease and the shuttle can’t move. Half the time an ultrasonic cleaning bath in degreaser followed by fader lube fixes those things. The other half the time the user gets really impatient and jerks the knob around hard enough to break it internally 😂
@@absurdengineering Thanks for hte insight! Sounds reasonable as a failure mode, too!
1:20 send it to WHERE?! :)
EBE is a traditional company since the 50-ies that has produced high-quality (and high-priced) switches. In the 80s I worked in a german company that manufactured ELA systems for the railways with high-end and durable switches from EBE. Nothing was too expensive for the "Deutsche Bundesbahn" (German State Railway) back then 😉 back then they still had a lot of money, instead today they have a lot of train delays 😄 The Encoder: You could also take any high-quality encoder and connect a small uC between it and the main uC, which contains some kind of translator program to output the required pulses (I've already done this for a Roland music synthesizer, instead of a simple mechanical encoder from Alps took a high-quality optical encoder from Grayhill. The "translator" uC was an AT89C2051 with some ASM code that converted the Grayhill format to the required Alps format)
wow Sagan is almost taller than Dave!.. nice to see Mrs EEVblog too!
#simp
He's already taller than Mrs EEVblog. Hope he'll be taller than me.
@@EEVblog2 Sounds like he will also have a deeper voice than you. :)
Rumpelstiltskin Paradox. You can't find the thing until you know it's name.
I first heard that on Adam Savage's channel and I love that term. So many times looking for a part or tool, and that happening.
Yep, ya gotta know the magic words, eg "Chicago screws".
"Rumpelstilzchen" is the word you'd never find, without spelling it exactly (it's the name of a vicious troll from a fairy tale by Brothers Grimm ..I assume you know that anyway) and well, it is actually not a 'paradox' (pretty irrational contradiction), it's rather more a phenomenon ...just sayin'
@@ch2o2 It's a funny saying. Not a scientific phrase. ;)
@@button-puncher ah, I see ;)
They don't make many off-off-off switches huh? I could corner the market 🤔🤨🤣
Or just don't connect wires to the switch.
Wireless zero power swich. Million dollar kickstarter.
@@EEVblog2only if its solar powered.
Behold the power of Knowing the Name of The Thing.
Encoder specs seem to warn of soldering vulnerability. 250 degrees for 5 secs max. Maybe reason for encoder failure/reduced life?
Glad to hear you can get a replacement part. I didn't watch the digikey parametric search part, you've done that a few times before.
Worth posting, Dave. Good to see Sagan in on the action too.
Interesting part, much simplifies the decode process for the encoder without having to decode the quadrature, but at what cost!
Takes Germans to make a mechanical workaround for lack of leet coding skillz 😂
I sent you the ebay link in the first presentation of the ESD gun....thank you.
He deserves a new Scope!!
i'm always straight to the "in-stock" button on digikey
then price
stops me finding perfect parts i can't order or can't afford lol
(and they're also the only two parameters digikey can't possibly get wrong)
Great you got the part!
I found those switches you find in the cockpits of airliners for exterior lights, that has the 3 white dots on a bar-type actuator, normally found in Boeing planes. Over $1,000 a piece for those things! Of course, they were "military grade." Yeah, no. Next!
93 Euros for that encoder?? Ouch!
€93 seems a little steep.
I do like the parametric search videos... drat 😂
I found the encoder yesterday but I don't want to create an account on the forum just to post a link.
Good grief Sagan is growing so fast.
You could piggy back a esp8266 where the encoder fits in and make a phone app to control it. I was mostly joking, no the most obvious thing is to find another encoder that has a similar pin output and somehow convert the socket. I mean like boj or custom pcb?
Hope you bought more than one at that eBay price
Had no clue you were laid that way. Out and looking for knobs lol
Dave also has a couch feet fetish.
93 euros? Thats some next level BS
Pro tip, if you searchings translate to other language’s ;-)
Replacing a rotary encoder with singular buttons is kind of a no-go unless you are prepared to do manual button sequencing, they don't just click per direction turned, it's a mechanically derived rising falling pulse train on both A and B outputs, an MCU could emulate it though. Also if you really needed a long style non-conductive shaft encoder, 3d print a plastic extender for a basic one, or take a lighter to a BIC pen I guess, either works.
This encoder is an older style encoder, it doesn't have A&B phase. It has 2 directional switches, in one direction the side A pulses between Ak & Rk while the side B stays on Rk. Datasheet at 2:40
Puzzle of the day: show how a multi-pole mom-off-mom toggle switch can generate quadrature outputs. And yes, it can :)
Yeah 93 euros and still fails miserably
If they used some overpriced encoder that then failed that easily that's just bad design...