Hello folks,

this time I want to introduce another reverse engineered schematic from the Tear Apart Table Dual Atari punk console, which is essential buiild with an NE556 which includes 2 of the poular timer circuits.

First of all, the LTspice simulation

Followed by the implementation of the circuit cchematic on KICAD:

Then again followed by the pcb schematic:

Last but not least the iBom:

ibom

Hello folks,

today I want to continue the series about simulation of synth modules with LTspice.

We start with this module from etsy which we disect and reverse engineer, so that we can build it with reverse polarity protection diodes…​

We want to analyze this module.

Lets start with the pcbs:

To begin with, we first want to reversse enginnering the two sides of the pcb, to build another pcb, with reverse polarity protection diodes in the mind, following the schematic in LTSpice: Also here is the download link for the LTSpice file:

Hello folks,

today I want to continue the series about simulation of synth modules with LTspice.

We want to analyze the sloth module from NLC.

Lets start with the schematic:

Right below is a copy of the schematic, created in ltspice, however missing the potentiometer(s).

Whats important here to note here is that for the fourth op-amp we needed to add some voltage offset of 1 µV to get it working. Additionally to that we need to simulation the power-on cycle of the power supply, by adding the Voltage with PieceWiseLinear function given ze values (t0,v0, t1, t2 ) with the Values 1ms 0V 100ms 12V ..

Hello folks,

today I want to discuss with you the simple LFO made by David Haillant.

It was the very first module I began my dives into the world of diy.

Quite simple and not to complicated to begin with…​

.

If you do not shy away from mathematical deep-dive explanations - (I sometimes do), you can view the details here (intgrator) and here (schmitt-trigger)

A more electronics dive in can be made here (german)

Hello folks,

today I want to start with a topic that I had already longer in my mind and finally took hands on.

We want to simulate a simple LFO (or a normal oscillator, depending on the chosen dimensions) and for that we use the relative well-known tool LTSpice that thankfully also works on Linux machines thanks to using the non-emulator wine.

A simple tutorial how to start that is found here.

Simple, after installation in the shell we enter (or copy):

In meinem mobilen Setup, dem NiftyVCase, habe ich meine DIY-Module gesammelt (mit Ausnahme des Doepfer A-124, den ich wegen seines großartigen Klangs einbauen musste). Es verfügt über eine Kick-Drum von Erica Synths, einen even VCO, eine Sampling-Modulator, A*B+C und Rampage von Befaco. Sowie den Divebomb III für etwas Delay. Zu guter Letzt ein Zlon-Skew-LFO und ein BCM086-Diodenleiter-Hochpassfilter.

Link:./noise_floor.m4a[noise floor Audio]

Dieses Mal haben wir einen verschachtelten Patch, der ein neues Mitglied enthält, den Zufallssequenzer von rat-king, der, wie der Name schon sagt, schöne zufällige Sequenzen liefert. Außerdem haben wir ein neues Mixer-Modul, selbstgebaut. Wir verwenden auch beide VCOs und beide LFO-Module…​

Jam-Session Audio

So here is another small patch idea for the Doepfer A-100 system, this time featuring the SEM filter from Oberheim, incarnated in the Doepfer modul A-106-5. We also utilize two LFO modules…​

LFO SEM Patch Audio

LFO SEM Patch Audio 2

LFO SEM Patch Audio 3

To this day I did not find the right audio recorder,and I am recording with my smartphone, so the sound quality is rather bad. I am still searching for the ideal recording hardware.

Hier ist also eine weitere einfache Patch-Idee für das Doepfer A-100-System, diesmal mit dem SEM-Filter von Oberheim, verkörpert im Doepfer Modul A-106-5. Wir verwenden auch zwei A-110-Oszillatormodule (ein Standard- und ein Basis-Modul) und den LFO.

Link:./sem_patch.m4a[SEM Patch Audio]

Bis heute habe ich nicht den richtigen Audiorecorder gefunden und nehme mit meinem Smartphone auf, sodass die Tonqualität eher schlecht ist. Ich bin immer noch auf der Suche nach der idealen Aufnahmehardware.