[DEMOS ADDED!] Mutant Hihats eurorack DIY PCB/panel sets

[ambrohski]

I missed a part when ordering what I needed for this kit and tried a shot in the dark that yielded a symptom similar an issue shared in previous posts- no decay adjustability (from just an initial audible 'tick' upon triggering). I expected something like this might happen because when building I...

noticed I didn't have one of these - http://www.mouser.com/ds/2/414/67-21126.pdf

So I tried one of these - http://www.mouser.com/ProductDetail/Bou ... fFpQx5g%3d

Both 100K, so it seemed like a harmless experiment until the correct part arrives No decay on the open hat, nor able to increase via the pot.

I'm hoping when it does arrive all will be well upon installation, but I am concerned about if it doesn't. Anyone have any luck resolving these symptoms? I am itching to get this piece to full power

BTW, Mutant Bassdrum is absolutely bangin', and a smooth DIY using the Mouser cart, additional notes on parts in the BOM, and the 2 stack hardware sold on Hex's site.

3 stack hardware sold on the site is still just a little short for this MHH build, causing the previously noted clearance issues with C13 and C26 33uF caps. I had no luck finding shorter caps that had the exact specs as the ones on the BOM on Mouser's site, sadly. I wish I had part numbers for the caps and short hardware shown on the sale page, maybe that specifically sized stuff could be included on an expanded DIY kit?

[ambrohski]

sooooo, my new pot arrived, was installed, and no change (no decay on open hat)... Any ideas?

[thetwlo]

RE: 1n caps? somehow forgot to order film, MLCC ok?
EDIT: just ordered some Film.
thanks!!!

[ronski]

Hi all,

Having a hard time finding the 22M ohm resistor for the mutant hihat.
UK located, anyone a spare one? Farnell, and RS don't seem to stock.
Did find some 5% ones, guess that's not acceptable?

[ijed]

Hey just wondering if someone can tell me if there's a difference between a CD40106/MM74C14 and HEF40106. Made my mutant hihats using some old HEFs I had lying around and everything's working except the internal noise source so I'm thinking that might be the issue. Failing that if someone has the schematics they could send me that'd be helpful too

EDIT: Swapped it for another HEF and it appears to be working. Might try and get a CD/MM to see if it makes a difference

[Thomedwards]

I just finished my build and thought I'd put in a review here in case someone lands here looking for info.

This is a great module. Pretty straightforward build, too. Be warned, though, the build instructions are not super-detailed. Be careful with the headers!

Two things that were minor hurdles for me. First, calibration is tricky in that the "window" is pretty small and I had to turn the trim pot many turns. I thought I had made a mistake, but it was just not calibrated. Second, one of the caps shorted something that made the closed hat very quiet. I had to put in a little extra space when I put the boards together.

All that being said, it was a very rewarding build. And I love me some hi hats.

[trockendock]

Where's the link to the Mouser Cart ... am i blind?

[starmandeluxe]

I'm about halfway through my build...Anyone know if these pots on Mouser will fit? The specs seem to match Hexinverter's BOM notes...but the picture is kind of misleading?

http://www.mouser.jp/ProductDetail/BI-T ... BWhNwoQ%3d

[starmandeluxe]

Where's the link to the Mouser Cart ... am i blind?

Pretty sure it doesn't exist (there may have been one at one point in time). We need to track down the parts individually. The BOM has a few Tayda links though. I found the rest via local shops, Synthrotek's online shop (Thonk has some parts too if they are closer to you), and Mouser (I'd like to make a bulk purchase on Mouser so finding appropriate pots there would be awesome).

[secrethero303]

Where's the link to the Mouser Cart ... am i blind?

Here is the Mouser cart for Mutant Hi-Hats:

https://www.mouser.com/ProjectManager/P ... 4493fc45c4

I found a link to it on Modular Addict

[starmandeluxe]

Where's the link to the Mouser Cart ... am i blind?

Here is the Mouser cart for Mutant Hi-Hats:

https://www.mouser.com/ProjectManager/P ... 4493fc45c4

I found a link to it on Modular Addict

I stand corrected! Thank you! A little late for me though haha. I actually did find a couple of promising pots on Mouser under the "Alps RK09" name. Will report if they work or not when they come in....

[secrethero303]

I'm about halfway through my build...Anyone know if these pots on Mouser will fit? The specs seem to match Hexinverter's BOM notes...but the picture is kind of misleading?

http://www.mouser.jp/ProductDetail/BI-T ... BWhNwoQ%3d

Unfortunately, I don't think these are going to work for you. Those are dual-gang potentiometers, and you only need single. The part number is P0925N-..., whereas the one recommended in the BOM is P0915N-... The key difference is the 2 vs the 1. If you look at the datasheet, you can see that number designates how many gangs. I think this one is what you were looking for: http://www.mouser.com/ProductDetail/BI- ... lENSKDg%3d

[starmandeluxe]

I'm about halfway through my build...Anyone know if these pots on Mouser will fit? The specs seem to match Hexinverter's BOM notes...but the picture is kind of misleading?

http://www.mouser.jp/ProductDetail/BI-T ... BWhNwoQ%3d

Unfortunately, I don't think these are going to work for you. Those are dual-gang potentiometers, and you only need single. The part number is P0925N-..., whereas the one recommended in the BOM is P0915N-... The key difference is the 2 vs the 1. If you look at the datasheet, you can see that number designates how many gangs. I think this one is what you were looking for: http://www.mouser.com/ProductDetail/BI- ... lENSKDg%3d

Hey thanks! I forgot to mention this, but I also realized this fact after carefully examining the datasheet. The important section is: "Style", which is indicated in the part ID as the letter after "P09x". At the top of the datasheet shows the different styles, and the one I think we all want is "Top Adjust" (had to do Google image search digging to make sure of the difference between "Side Adjust" and "Top Adjust").

All that being said, I still ended up going with these ones from ALPS, but I may add some of the BI pots just to be safe!
http://www.mouser.jp/Search/ProductDeta ... 09L1140A5E

Also, I had no idea about the "gangs" spec, so thanks for saving me before I ordered!

[starmandeluxe]

I'm about halfway through my build...Anyone know if these pots on Mouser will fit? The specs seem to match Hexinverter's BOM notes...but the picture is kind of misleading?

http://www.mouser.jp/ProductDetail/BI-T ... BWhNwoQ%3d

Unfortunately, I don't think these are going to work for you. Those are dual-gang potentiometers, and you only need single. The part number is P0925N-..., whereas the one recommended in the BOM is P0915N-... The key difference is the 2 vs the 1. If you look at the datasheet, you can see that number designates how many gangs. I think this one is what you were looking for: http://www.mouser.com/ProductDetail/BI- ... lENSKDg%3d

Hey thanks! I forgot to mention this, but I also realized this fact after carefully examining the datasheet. The important section is: "Style", which is indicated in the part ID as the letter after "P09x". At the top of the datasheet shows the different styles, and the one I think we all want is "Top Adjust" (had to do Google image search digging to make sure of the difference between "Side Adjust" and "Top Adjust").

All that being said, I still ended up going with these ones from ALPS, but I may add some of the BI pots just to be safe!
http://www.mouser.jp/Search/ProductDeta ... 09L1140A5E

Also, I had no idea about the "gangs" spec, so thanks for saving me before I ordered!

OK, finished my build! And, it works! It sounds great! (Had major problems with building the Mutant Clap, though...see Clap thread for details...)

So about the pots for this thing, yes it is possible to order them from Mouser, but it's quite difficult. Still, if you need to save money on shipping and get them in one order, this is a good way to go. Here's the main problem I had with almost all of the pots I ordered: the two larger legs DO NOT fit into the PCB holes. This is regardless of manufacturer. So I had to smash/bend the legs with a pliers until they would kind of go in. Would have been nicer if the PCB holes were a little larger for the pots but hey at least it's still workable (and for some funny reason the holes for the jack legs are just way too big).

For posterity (if anyone ever considers this), I'll put links to the pots I bought here..
can't guarantee the links won't die though.


10k Audio (ALPS RK09L1140A5E): http://www.mouser.com/Search/ProductDet ... 09L1140A5E

100k Audio (ALPS RK09D113F25C0A104): http://www.mouser.com/Search/ProductDet ... D113F25C0A

100k Linear (Alpha RV09AF-40-20K-B100K): http://www.mouser.com/Search/ProductDet ... 2090F-100K

[truman_k]

OK, finished my build! And, it works! It sounds great! (Had major problems with building the Mutant Clap, though...see Clap thread for details...)

So about the pots for this thing, yes it is possible to order them from Mouser, but it's quite difficult. Still, if you need to save money on shipping and get them in one order, this is a good way to go. Here's the main problem I had with almost all of the pots I ordered: the two larger legs DO NOT fit into the PCB holes. This is regardless of manufacturer. So I had to smash/bend the legs with a pliers until they would kind of go in. Would have been nicer if the PCB holes were a little larger for the pots but hey at least it's still workable (and for some funny reason the holes for the jack legs are just way too big).

For posterity (if anyone ever considers this), I'll put links to the pots I bought here..
can't guarantee the links won't die though.

I also finished my built today. Everything works perfectly.

For the potentiometer, I used Alpha 9mm Pots supplied by Thonk UK. They fits with no problem.

https://www.thonk.co.uk/shop/alpha-9mm-pots/

For the jacks, I also used Thonkiconn Jacks (PJ301M-12) from Thonk. The two legs fit with no problem but the ground ones are still too big. So I have to trim them off and replace them with component legs. its kinda ugly, but the only way to go

[truman_k]

I think the closed hat is a bit too short.

After reading the schematics, I changed the value of a capacitor C24 to extend the decay a little longer. Now it sounds much better.

An adapter is used, such that I can plug in different values of cap and see which one sounds best. A 2.2uf is used in this case.

[Doc L Junior]

Just finished mine today and it almost works fine except that the open hh does not close completely when Exclusive og Fade is engaged.

Has anyone experienced this?

[guestt]

Finally finished my build of this, the headers are a pig, especially when you're stupid like me and got electrolytic caps that are slightly too high profile to use the standard pin headers.

Regardless, after several hours of experimentation I got a really nice configuration that leaves just enough clearance and looks tidy!

Plugged it in and thought, ugh... what's going on, but I was in the wrong and hadn't set up the trim. Now it's all dialled in it's sounding great!! I love the external input - genius!

That's the Bassdrum, the Snare and the HiHats built now - I am doing well - they all worked first time.

Overall I am thoroughly enjoying these builds, challenging - yes! Worthwhile - absolutely!

Thank you once again to Hexinverter for these awesome designs.

I just have the Clap left to do and my DIY drum machine will be complete

So, probably another 6 months or something by the time I get everything together hehe!

[mazzazza]

Just finished mine today and it almost works fine except that the open hh does not close completely when Exclusive og Fade is engaged.

Has anyone experienced this?

Did you ever figure this out? Mine does this and one thing I thought it might be is the length of the trigger signal - If I quickly triple tap the closed hi-hat, the open seems to choke much quicker. I'm going to try sending it longer triggers when I next get a chance and see if that makes a difference ( I don't know how the choke works so may be barking up the wrong tree!).

[rwbwsoho]

I think the closed hat is a bit too short.

After reading the schematics, I changed the value of a capacitor C24 to extend the decay a little longer. Now it sounds much better.

An adapter is used, such that I can plug in different values of cap and see which one sounds best. A 2.2uf is used in this case.

This is a great mod... Fine tuned my closed hi-hat with a 1uF cap instead (I found the 2.2uF decay too long for my liking) - Its perfect now.

Thanks, rwbw.

[peterpanderretter]

I'm about halfway through my build...Anyone know if these pots on Mouser will fit? The specs seem to match Hexinverter's BOM notes...but the picture is kind of misleading?

http://www.mouser.jp/ProductDetail/BI-T ... BWhNwoQ%3d

Unfortunately, I don't think these are going to work for you. Those are dual-gang potentiometers, and you only need single. The part number is P0925N-..., whereas the one recommended in the BOM is P0915N-... The key difference is the 2 vs the 1. If you look at the datasheet, you can see that number designates how many gangs. I think this one is what you were looking for: http://www.mouser.com/ProductDetail/BI- ... lENSKDg%3d

Hey thanks! I forgot to mention this, but I also realized this fact after carefully examining the datasheet. The important section is: "Style", which is indicated in the part ID as the letter after "P09x". At the top of the datasheet shows the different styles, and the one I think we all want is "Top Adjust" (had to do Google image search digging to make sure of the difference between "Side Adjust" and "Top Adjust").

All that being said, I still ended up going with these ones from ALPS, but I may add some of the BI pots just to be safe!
http://www.mouser.jp/Search/ProductDeta ... 09L1140A5E

Also, I had no idea about the "gangs" spec, so thanks for saving me before I ordered!

OK, finished my build! And, it works! It sounds great! (Had major problems with building the Mutant Clap, though...see Clap thread for details...)

So about the pots for this thing, yes it is possible to order them from Mouser, but it's quite difficult. Still, if you need to save money on shipping and get them in one order, this is a good way to go. Here's the main problem I had with almost all of the pots I ordered: the two larger legs DO NOT fit into the PCB holes. This is regardless of manufacturer. So I had to smash/bend the legs with a pliers until they would kind of go in. Would have been nicer if the PCB holes were a little larger for the pots but hey at least it's still workable (and for some funny reason the holes for the jack legs are just way too big).

For posterity (if anyone ever considers this), I'll put links to the pots I bought here..
can't guarantee the links won't die though.


10k Audio (ALPS RK09L1140A5E): http://www.mouser.com/Search/ProductDet ... 09L1140A5E

100k Audio (ALPS RK09D113F25C0A104): http://www.mouser.com/Search/ProductDet ... D113F25C0A

100k Linear (Alpha RV09AF-40-20K-B100K): http://www.mouser.com/Search/ProductDet ... 2090F-100K

Can anybody example lain this weird QTYs in the BOM?

[synthetek]

Can anybody example lain this weird QTYs in the BOM?

That's the Mutant Hot Glue BOM Try this one

[peterpanderretter]

Can anybody example lain this weird QTYs in the BOM?

That's the Mutant Hot Glue BOM Try this one

shit
thanks!!
> due to a very old mouser shopping list i was missing quite some elements & getting totally confused with the wrong BOM & inventory

The Mutant DIY projects really put the "Y" in "DIY"

Unfortunately I just don't have the resources to put together nice diagrams and things like header stacks explanations for the Mutant DIY stuff, so, pictures with annotations will have to do. This is lifted from the MHH assembly tips PDF, and should illustrate how the stack works, as you can discern which is the male and which are the female headers:



RE: the stacking headers -- I have yet to encounter what you describe, jbdiver. It is possible though that too much heat while soldering, or other mechanical effects could damage the orientation of the pins and cause a misalignment when connecting them.

Which kind of wire do you guys recommend for realizing the ground connection of the 3.5mm jacks with the PCB?

two build questions: will this run on 15v without modification? also, before I solder the vactrol i was hoping someone could confirm i align the dot with the black side on the pcb and the long sides are up to go to the second two through holes?
thanks!!

Do i just bend the upper wires into the 2 little wholes next to it?

[synthetek]

Which kind of wire do you guys recommend for realizing the ground connection of the 3.5mm jacks with the PCB?

You can use the legs clipped off resistors or other components or wire, anything really or you can use the never style jacks that have the extra leg.

Do i just bend the upper wires into the 2 little wholes next to it?

Yes

[chrissugar]

Hi all

A few weeks ago I bought from Modular Addict three of the Mutant PCB & panel kits (Bass drum, Snare and Hihats)
I sent a mail to Hexinverter regarding the schematics but no response for a few days.
If anyone can help please contact me with personal message and I will give you my email address.
Thank you

chris

P.S. I can prove I have the kits with photos of them (if necessary with the current date in the photo). Promise to keep the schematics private.