Re: book gatekeeping - yes I don't think there's any better resources. I was just looking at the diy book resources funny enough. I still dont understand why experts like to punch down and suggest noobs are audio book learners or paint by numbers simpletons. That's literally the gatekeeping I was t...

It is a simple way to look professional. But it doesn't help people when building. In 99.9% of the case you just say ohm, tolerance and power rating and it will be easier for everyone to source their components. Well, for through-hole I'd agree, but for SMD it's not a "bend those 5MM leads to fit 2...

The Morph-Lag is probably the most popular of these circuits, and is often credited as the source/inspiration for many others. There's plenty of discussion regarding the circuit online, for instance here: http://audiodiwhy.blogspot.com/2019/11/morph-lag-easy-shape-shifter.html i stumbled on that li...

https://kassu2000.blogspot.com/2016/04/slope-generator.html This is a great write up on the long-tail pair (LTP). There are also links to further reading. thank you so much, this is exactly the sort of thing i was hoping for!! Maybe you can use my schematic as starting point: https://www.haraldswer...

So Befaco makes this incredible slew limiter with voltage controlled attack and release: https://befaco.org/docs/Slew_Limiter/Slew_Limiter_V1_2_Schematic.pdf I'd like to build something similar, but simpler, without the voltage control (I'm actually planning to slap it onto the end of an envelope fo...

i'm a bit surprised at the replies above - it seems impossible to give advice when you mention so little about what you're with it. what kind(s) of music do you make? or sound design? do you plan to use it live, or is it just for studio? if it's studio, you don't need nearly as many utilities, and c...

1/4w can often work in place of 1/2w. but without knowing the application, i can't say for sure.

the solder does not need to got through the pad. as long as it forms a good bond on the soldering side, adding extra solder doesn't really contribute anything.

more context would definitely help. but as long as the power rating is high enough, the size usually doesn't matter.

hot plate only helps for one side though. for the other, you'll still need hot air or hand soldering. still, a $30 one from target can make that first side a lot easier: https://www.sparkfun.com/tutorials/59 but if this is a one-off board, and you don't plan to do this often, use hot air for one sid...

to be honest, you'd be better off picking a point (such as the upper right corner), measuring the distance from that point to each component in kicad, and then replicating it in your cad software. bit of a pain, but it will guarantee that there aren't any scaling errors from export/import.

in my experience, a lot of the pcb/panel sets that require obsolete parts are just... older. and you can't really blame the designer if the parts they selected have become obsolete. many of the modules i built just five years ago require substitutions now. if you want to avoid this without resorting...

dot matrix madness wrote: ↑

Wed Jan 06, 2021 3:26 am

Got a this desktop fume absorber recently.
You have to be rather close to it, but is works. The noise (39dB) is, however, annoying with time. Thus I thinking to put a foot switch
in between the power line.

i got one of those footswitches for my hakko, and it's been extremely useful

do you have a schematic and photos? it's hard to say why your switch isn't working when we don't even know how you've wired it up

... do you need a scope with memory to use this properly? no, scan rate is fast enough for any scope. Did you read the instructions ? if you compare less than 8 transistors you MUST connect all non used inputs to an input in use ! ah, thank you very much for explaining! from the description, it see...

i build one of these (thanks to omega8870). it seems to work, but i can't get good results with my scope. do you need a scope with memory to use this properly? i see a train of pulses when i hook it up and add at least one transistor, but the readout stays the same regardless of how many transistors...

looks fine besides that one solder joint. Rex's vertical diodes look incredible, but in truth it doesn't matter how you mount/bend them so long as they're soldered well.

Do you mean like that? dead 0 volt zone.jpg So the diodes are just after the 4k7 that is connected to the middle lug of the joystick potentiometer? Diode can be 1N4148? and if I'm guessing right so the diode in both direction will block the voltage below +0.6v and above -0.6+? this is due to their ...

i love my hakko fa-430, one of the best investments i've made. but some weeks i spent 15hrs+ soldering, which would be a lot of exposure without it. for people soldering a couple hours every so often, it's likely overkill. one thing i've noticed that with the smaller benchtop units, they absorb most...

the application note for filter design with the SSI2164 does a pretty good job of explaining: http://www.soundsemiconductor.com/downloads/AN701.pdf

but tldr, you can't just swap one for the other.

they are there only for not having to worry about ESDs. No “functional” impact with input signals in the modular range. https://forum.mutable-instruments.net/t/new-ripples-what-are-the-diodes-at-the-inputs/17034 the tides schematic has some parts numbers as well: https://mutable-instruments.net/mod...

Was just thinking, with the simple multiplier topology, the less linearized the output is from the OTA, the worse (mustache-shaped) bleedthru you will get due to this type of multiplier working on feeding an inverter version of the original carrier in at the end. Seems like an easy to way go reduce...

"but as I am not near my computer, I cannot loop back what I've created" it sounds like you just need to adjust your setup so you can integrate your modular better with your computer. being able to loop sections and build on top of what you're already doing is very useful to move beyond static loopi...

so someone did change out the original footswitch for true bypass. assuming they did that mod correct, you should be able to replace it with any old DPDT (or a 3PDT if you want to add an indicator LED too).

do you have a photo of how the current footswitch is wired? the original stock bypass is not true bypass, and it's not buffered either. the circuit is always connected to the input signal (via the 10uf Cap near the input). as with a passive multiple splitting signal, the input signal can be affected...

i remember those old resistors, pale blue with the crazy thin (and sometimes oxidized) leads. the new dark blue ones are much nicer to work with. i haven't seen them add any new guitar effects pcbs in the past couple years, so i think you're right that they're shifting focus to more general diy. it'...