Comments for Tristan Dabbles

Comment on The Steiner Resonant Filter & A New Adaptation by Tristan Chambers

Tristan Chambers — Sat, 04 May 2013 22:22:35 +0000

Hi Avishay,

Try turning the resonance pot all the way up. The circuit should start oscillating – regardless of any input. If it doesn’t do this then there are some issues. Are you using a dual power supply? Are the capacitors in the circuit identical? Are the resistances of R1 and R2 identical?

Comment on The Steiner Resonant Filter & A New Adaptation by avishay hazan

avishay hazan — Sat, 04 May 2013 20:09:32 +0000

hey tristan ive made this circuite exactly but if i connect audio in and audio out , i can’t get any sound ,,, please help me

Comment on The Steiner Resonant Filter & A New Adaptation by Robby Matthias

Robby Matthias — Mon, 15 Apr 2013 17:15:01 +0000

Btw;Very Buchla,which I like a lot! : )

Comment on The Steiner Resonant Filter & A New Adaptation by Robby Matthias

Robby Matthias — Mon, 15 Apr 2013 17:12:28 +0000

Enjoyed this.I think I will take the time to put one together.I have built a lot of electronic synth stuff,over the years’,but get tired of having to look for exotic parts’,to make the stuff exponential! : )

Comment on 555 LCO & JavaScript Get Freaky Now by The Lumiphone | Tristan Dabbles

The Lumiphone | Tristan Dabbles — Sun, 07 Apr 2013 15:24:30 +0000

[...] You can also play it with a microcontroller like an Arduino by varying the brightness of an LED. You can even play the lumiphone with the brightness of a computer screen – which can be controlled by a custom program written, for example, in Pure Data or even [...]

Comment on The Steiner Resonant Filter & A New Adaptation by petey twofinger

petey twofinger — Tue, 08 Jan 2013 20:43:08 +0000

thank you , i recently built the lm741 based filter from the WSG , for my diy guitar synth hack , but … might be looking for something a bit different for it . its gotta be 9 volts , thats a prerequisite . i did a yt video of my 555 based opto theremins yesterday , and boy , i am really sick of square waves . http://www.youtube.com/watch?v=Ug0p_VWMuqg

Comment on The Steiner Resonant Filter & A New Adaptation by Tristan Chambers

Tristan Chambers — Tue, 08 Jan 2013 19:33:39 +0000

I used a TL082 – my goto general purpose chip that comes with two op-amps inside. If your not using the other one you can set it up as an inverting buffer. Thanks for your comments, and good luck. Feel free to post on here if you have issues or learn anything new about the circuit.

Comment on The Steiner Resonant Filter & A New Adaptation by petey twofinger

petey twofinger — Tue, 08 Jan 2013 04:12:39 +0000

whats the chip ? would like to try this circuit ! thanks , and great blog .

Comment on A Case Against the 555 Timer by Tristan Chambers

Tristan Chambers — Wed, 26 Sep 2012 12:36:11 +0000

Keep in mind that the output of that op-amp is inverted! Use a transistor as an inverter to flip it: http://www.google.com/search?q=transistor+inverter

Comment on A Case Against the 555 Timer by Tristan Chambers

Tristan Chambers — Wed, 26 Sep 2012 12:30:32 +0000

In terms of syncing the two circuits: You could probably use the pulse output of the right op-amp in this circuit to trigger your Atari Punk Console. That way the APC would be slaved to the saw tooth oscillator. You could use this circuit controlled by a keyboard but it would require adding special components for exponential control, calibration, and frequency stability. I'm moving away from this paradigm of design on this blog actually. I just want to make noise so all the extra circuitry to make tonal music isn't included. I think the same is true for the Atari Punk Console. If you'd like to look at a well designed VCO circuit that adheres to the 1 volt per octave standard check out the ASM site. The circuit above is actually based on the ASM VCO circuit.