Slide switch grounding?

Discuss Yocto construction and related issues

Re: Slide switch grounding?

Postby bmaximus » Apr 27th, '16, 09:01

BedroomMusic wrote:maybe use plastic slide switch :? if there is some ;)


...maybe it would be worse, because the contacts would remain in metal, usually copper, without the possibility of shielding the switches by grounding. I don't know why the engineer of the Yocto has excluded the switches from the ground, while the pots are connected. But connect them to ground is quite easy and I don't think you can do better. Probably you have also the Kacper's metal enclosure and you have noticed that without grounding you can't touch it without electromagnetic interference. The same is for the switches... For me is already good enough and unless you don't want to do only drum solo, you will not hear noises in the mix with other instruments.
User avatar
bmaximus
 
Posts: 57
Joined: Sep 28th, '15, 05:50
Location: Roma

Re: Slide switch grounding?

Postby ALFREDO » May 25th, '16, 00:11

bmaximus wrote:...It does not completely solve the problem of resonance of the toms/congas...



Really??
That's not good, hum and clicks make me think about to build or not, and I already order two metal enclosures...
ALFREDO
 
Posts: 30
Joined: Apr 11th, '16, 18:01

Re: Slide switch grounding?

Postby bmaximus » May 29th, '16, 07:19

All I can tell you is judge by your ears, keeping in mind who soundcloud uses compression at 128K which enhances the noise floor. It seems to me an acceptable result.
https://soundcloud.com/maxibi/yocto-sou ... tomscongas
User avatar
bmaximus
 
Posts: 57
Joined: Sep 28th, '15, 05:50
Location: Roma

Re: Slide switch grounding?

Postby ALFREDO » May 29th, '16, 09:19



I don´t ear any hum noise on that recording, to my it´s ok.
ALFREDO
 
Posts: 30
Joined: Apr 11th, '16, 18:01

Re: Slide switch grounding?

Postby bmaximus » May 30th, '16, 06:11

it's true ... In some cases the noise can jump out. Perhaps increase too much the sound card gain, or by using certain effects, such as distortion or compressor, but after grounded switches and the enclosure is in control. I am very pleased to have completed this project!
User avatar
bmaximus
 
Posts: 57
Joined: Sep 28th, '15, 05:50
Location: Roma

Re: Slide switch grounding?

Postby Kazper » Jul 28th, '16, 12:52

bmaximus wrote:Thanks so much, this advice was very helpful. It does not completely solve the problem of resonance of the toms/congas (especially for the midconga) but attenuates it, so as to be able to record sound!
In this photo you can see how i've connected the swithces to ground:

Image


What version of pcb do you have?

Do you have one more yellow wire to a ground point?

From the photo you have made a bigger antenna by chaining them together and not connecting one end point. Otherwise it looks like a great way to get it done..
Kazper
 
Posts: 61
Joined: Feb 20th, '16, 20:06

Re: Slide switch grounding?

Postby rv0 » Jul 29th, '16, 11:20

Kazper wrote:
bmaximus wrote:Thanks so much, this advice was very helpful. It does not completely solve the problem of resonance of the toms/congas (especially for the midconga) but attenuates it, so as to be able to record sound!
In this photo you can see how i've connected the swithces to ground:


What version of pcb do you have?

Do you have one more yellow wire to a ground point?

From the photo you have made a bigger antenna by chaining them together and not connecting one end point. Otherwise it looks like a great way to get it done..


Right, that seems like a valid concern. What would you recommend, connecting the "end" point of the chain to gnd, or running separate wires from 1 gnd point to each switch body?
I wish one of the e-licktronic guys to have a look at this topicand provide a visual of the ground planes, so we can investigate and sort all these grounding issues once and for all
Get the latest unofficial Yocto V1 firmware here.
Be sure to check the revised manual.
Leave your comments in this thread.
User avatar
rv0
 
Posts: 184
Joined: Feb 11th, '14, 09:09

Re: Slide switch grounding?

Postby Kazper » Jul 29th, '16, 14:58

Chaining them together to a single ground point should be fine over separate runs. Just don't make a ground loop by tie both ends to separate or the same grind point.

I think from another thread there is 2 ground planes, one for the 15v circuits and one for the 5v circuits based on issues with triggering.

Just a note, chain them from left to right with short wires around the other components and when you get to the last one chain it to the nearby potentiometer mount. Use your DMM and check for continuity before the mod and after to verify that it is resolved.

I did this and have a internal power transformer, nice and quite.
Kazper
 
Posts: 61
Joined: Feb 20th, '16, 20:06

Re: Slide switch grounding?

Postby bmaximus » Sep 5th, '16, 08:45

Kazper wrote:What version of pcb do you have?

Do you have one more yellow wire to a ground point?

From the photo you have made a bigger antenna by chaining them together and not connecting one end point. Otherwise it looks like a great way to get it done..

Sorry for the delayed response, but unfortunately, i realize only now being quoted. About the grounding and the possibility of creating "a cure that is worse than the desease" i just tried the easiest way to solve the problem (many small cables that go from left to right to connect to the nearest ground). I believe it is the last printed circuit version, since I bought it last fall. In my case the "cure" it work enough, because the noise floor, by ear, is comparable with most of the instruments built in factory...
Ciao!
User avatar
bmaximus
 
Posts: 57
Joined: Sep 28th, '15, 05:50
Location: Roma

Re: Slide switch grounding?

Postby richardlawson1489 » Sep 8th, '16, 12:52

Can I investigate a geometric/level set method to locate ground plane objects in a robot environment and reconstruct their structure from a collection of sparse views?
richardlawson1489
 
Posts: 31
Joined: Feb 18th, '15, 09:59
Location: Anaheim

PreviousNext

Return to Yocto v1.0 Hardware

Who is online

Users browsing this forum: No registered users and 11 guests