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Messages - stecykmi

Pages: [1] 2 3 ... 67
1
Open Discussion / Re: NOD - New Oscilloscope Day
« on: November 10, 2018, 09:51:31 AM »
nice scope, i'm pretty sure i used that model or similar in university. fft mode can be really interesting! try looking at a signal before and after a distortion to see all the additional harmonics that are added.

2
that's a pretty crazy machine. how do you actually write programs for it? manual input with individual bit entry register by register? i guess there is some machine language code that you have to follow?

3
Build Reports / Re: 1776 Effects Multiplex with Mod board
« on: September 10, 2018, 05:19:21 PM »
ya well done on that vader, multiplex is one of my favorite circuits too. great build.

4
Build Reports / Re: Busy Summer Build Bonanza
« on: September 10, 2018, 05:17:19 PM »
your builds are always cool chris, always good stuff

5
Open Discussion / Re: Boost pedal with 11 vactrols
« on: June 10, 2018, 10:08:01 AM »
It maybe related to the presets/dipswitches the chase bliss stuff has.

It's this, I do believe. I think he uses vactrols in conjunction with switching (somehow). Dude is on a mission to get selenium into landfills in 50 years, haha.  ;D

my guess is that he uses the DIP switches to set different bias points and uses that to control the resistance of the vactrol. basically using the vactrols as voltage-controlled resistors. pretty clever! i think this was used in early synths as a way to implement preset voices without digital controls.

6
Open Discussion / Re: Christman present for myself .....NOD!!
« on: December 22, 2017, 06:40:05 PM »
sweet, being able to see FFT's might be very cool, i highly recommend playing around with that. if you compare the input of a circuit against the output, you can see what kind of harmonics are generated.

7
Open Discussion / Re: Christman present for myself .....NOD!!
« on: December 21, 2017, 05:59:22 PM »
simple signal generators will work for almost all audio applications, especially hobbyist stuff. they are useful for calibrating but don't forget you still have to try it with a real instrument after  :P

cool scope! does it do XY mode? does it do fft mode/spectrum mode?

8
Build Reports / Re: Total Recall - anyone else have this issue?
« on: December 17, 2017, 11:34:31 AM »
buy a new 2.1mm connector, cut the 2.5mm connector off and install the smaller one. just make sure you double check the polarity.

9
the "Millionaire" mechanical calculator video in the same series is pretty cool too.

10
Open Discussion / Re: Advice on JCM800 clone
« on: November 04, 2017, 08:04:58 PM »
seems kind of weird that the tube heater wiring isn't twisted.

Correction: it's kind of out of view against the rear panel. up for debate.

11
Open Discussion / Re: Advise for a simple DIY hi-fi amp
« on: July 15, 2017, 08:16:33 AM »
i would go with a IC based amp like the one posted above for build simplicity. the TDA729 chip is also popular for diy. i think there are a few different chips in the TDA series, that one seems to be the most popular.

i have never built one myself but you can buy kits for these types of project from china quite cheaply on ebay or what have you.

12
Open Discussion / Re: Good read if you want to understand JFETs
« on: June 22, 2017, 05:40:24 PM »
good find

13
Open Discussion / Re: Any auto wah use an ADSR?
« on: May 26, 2017, 06:14:29 PM »
good question, there are none that i know of but keep in mind that a plucked string's envelope will look a lot like a typical ADSR envelope. a simpler attack/decay control setup (which are more common) may be all you need for most guitar applications since you can sorta fake the extra controls with picking and a threshold/intensity control. the primary reason a synth needs an ADSR envelope is because synth oscillators are either on/off with no other control over the volume.

14
Open Discussion / Re: Automatic center punch
« on: May 08, 2017, 06:37:10 PM »
ya mine does the same thing, ive had it for years and i cant remember where i got it anymore. it has a pretty nice machined brass (i think) handle but i do have to open it up and mess around with the spring a bit.

15
no the ehx is a 2.1mm connector, same as boss-style connector

yes, you should use an insulated jack.

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