hi guys. one quick question. after 8 years of having drummit 5, i noticed that sometimes when i turn the knobs (for instance when changing kits), i notice that the kits change strangely. it will go for example, 1,2,3,4,5,34,5,6,7,8,4,5,6, etc. i turn it right and instead of going forward it goes back etc.
i assume it needs cleaning. i havent openned the kit since i did the mod, and i remember that i had scratched a bit the plastic nuts on the back...
to fix this, is it a matter of openning the kit and undusting it, or spraying it with pessed air? do i have to do something else? can it be fixed without openning the kit? anyone else had that?
module works flawlessly apart from that
I had this on my drumit5 too. Mine was more of two kits forward, one kit back. 1 kit forward, two kits back. Sorta thing. I never tried cleaning it, wouldn't risk doing some damage. A minor inconvenience at best. A mate's drumit5 didn't do it at all.
Hi. It's the encoder being worn out. They should give a nice gray code but states will flip at random.
Opening up the unit and spray them inside might help. Orherwise best to replace.
The one used is the PEC12R 4220F S0024.
But the 4120F S0012 might be safer as it has only 12 pulses per rev so each gray "stretch" is double as long. But it takes also twice as much rotating to change a value.
Regards, Deve.
Quote from: Deve Loper on February 28, 2019, 07:00:31 AM
Hi. It's the encoder being worn out. They should give a nice gray code but states will flip at random.
Opening up the unit and spray them inside might help. Orherwise best to replace.
The one used is the PEC12R 4220F S0024.
But the 4120F S0012 might be safer as it has only 12 pulses per rev so each gray "stretch" is double as long. But it takes also twice as much rotating to change a value.
Regards, Deve.
Thank you deve. since english isnt my mother language, i didnt grasp what you meant by "encoder".
After googling it, it is this thingy, right?
https://gr.mouser.com/ProductDetail/Bourns/PEC12R-4220F-S0024?qs=Zq5ylnUbLm7u%2FuPQvUoR4Q%3D%3D
https://www.digikey.gr/product-detail/en/bourns-inc/PEC12R-4220F-S0024/PEC12R-4220F-S0024-ND/4499653
As i can see (unless i am wrong), this needs soldering, correct?
wouldnt that be a big risk? wouldnt there be a chance of ruining the module?
i am afraid to do this procedure, if i am to lose the module entirely. thank you for trying to help me.
if i open the module and spray, where would i need to spray exactly? underneath the encoder perhaps?
wouldnt want to do any damage as well.
and i spray just with pressed air, right?
thank you
It seemed like mine started doing it after I updated the OS that added the ability for scrolling the Kits in one continuous direction, instead of going 1-100 and back. If I rotate slowly, it works fine. i.e. 1....2....3, etc. If I go faster, it gets confused- maybe just coincidental. Sometimes during assembly, the flux in the solder wicks up into the contacts and contaminates the contacts. My module does not have that much run time, and was bought new. I tried cleaning the contacts (have special contact cleaner), but it didn't seem to help.
Hi. Yes thats the right encoder. Its a pretty closed housing so I guess spray wont get in.
Probably best to replace them. You can pretty easily clip all 5 metal pins so you can solder away each pin by itself.
Best of luck, Deve.
... plus 2 metal brackets.
Btw, I think the PEC11R is a better encoder. They have the same footprint so just check rhe right length of the shaft.
Deve.
Just be careful when you replace these. Encoders like these don't like a lot of heat for too long of a time while soldering. They are easy to damage internally if they are heated too high and for too long. Although hand soldering is not recommended, it can be done if you are careful.
The datasheet for the PEC12R shows the soldering criteria.
Quote from: Deve Loper on March 02, 2019, 09:00:09 AM
Hi. Yes thats the right encoder. Its a pretty closed housing so I guess spray wont get in.
Probably best to replace them. You can pretty easily clip all 5 metal pins so you can solder away each pin by itself.
Best of luck, Deve.
my friend, i really dont understand what that means (clipping all 5 metal pins, and soldering each one "by itself")... probably i will send this to a technician to fix, so what do i tell them. this will be straightforward for a good technician, right?
Quote from: Deve Loper on March 02, 2019, 09:07:25 AM
... plus 2 metal brackets.
so i need to also purchase some metal brackets? which are these?? is there a link so that i can order them?
Quote from: EWM on March 02, 2019, 02:26:41 PM
Just be careful when you replace these. Encoders like these don't like a lot of heat for too long of a time while soldering. They are easy to damage internally if they are heated too high and for too long. Although hand soldering is not recommended, it can be done if you are careful.
The datasheet for the PEC12R shows the soldering criteria.
what else can be done apart from hand soldering? i have a small solder pen but i will send this to a technician to build. ill read the sheet and specify to him not to heat it that much. thank you
thank you guys
Quote from: BURNIN AMBITION on March 03, 2019, 11:14:39 AM
my friend, i really dont understand what that means (clipping all 5 metal pins, and soldering each one "by itselfâ€
This is the way to do it for components with several solder connections/pins (like circuits...or encoders etc) ...if trying to take them away by handsoldering. Trying to heat all pins at the same time and try to bend off the old encoder will probably end up in a damaged board.
When all pins are removed you could easily clean up the holes and then be able to install the new encoder.
Best regards
Anders / www.zourman.com
thank you so much. i assume that my technician will know this technique. thank you