Germanium white and pink noise generator. I used a PNP transistor that I pulled from a damaged-beyond-repair transistor radio. Use your worst transistors for best results, silicon transistors need not apply! You can find the stripboard layout here.
Nice!
Ive got a nasty AC128 with massive leakage, never would have thought about using it as a noise transistor.
If, just as a test, you were to connect up all those Sidekicks to one Hero, and see how it goes, I would definitely read your report with interestā¦
hadnāt really thought about that . I was just doing 1 hero to 2 side kicks . but yeah I will give it a try . still a ways to go before I am finished .
Completed this yesterday. Vactrol circuit to add voltage control to a non vc oscillator. The LDR part is connected in parallel with the tuning pots of the oscillator.
Just finished a stereo mixer. It started as a āit is going to be an easy oneā and ended up being a āFFS thatās a lot of extra wires just for the stereoā
Cute tiny little thing, gonna have to add this build to my infinite TODO list
Nothing special today, just a panel to get 9V outputs to use with effect pedals, but there is also a semi-successful voltage inverter on board about which you can find more here.
Came home from USA a few days ago and have just started looking into a MEGA-project - Neutronās QVCA, a nice and compact module that requires a steady hand as all componets are surface mounted (YAY!!! ).
Got a soldering iron with a finest tip, a roll of 0.5mm solder and will have a go at the smaller 8-pin ICs before moving on to the bigger ones.
This is my first serious smd project (I am an experienced solderer) .
Also waiting for a package from Germany for Timo Rozendalās Dual AD/AR, though I may have some stuff in my storages so I can start now.
Why do you need negative voltage for effects pedals?
Good Luck!
With my shaky hands I probably wouldnāt be brave enough to tackle something like this.
Iām working on the CV inputs and thought Iād add a Voltmeter to the software which uses the LEDs of the sliders. This can come in handy for calibration purposes.
Circuits that are based exclusively on PNP transistors have to be powered with -9V.
Yeah that makes sense, to permit a common ground for both types.
For anyone interested in Turing Machine modules, Iāve just uploaded a KiCad schematic and PCB layout for the Worng TM-LPG-X lowpass gate module to GitHub. The PCB has a couple of custom footprints allowing the capacitors of the LPG to be replaced by resistors (as in a Vactrol Mix) or by pin headers to connect to a panel mounted DPDT switch to swap between these modes. The Rs and Cs are mounted on the switch in this case.
Thereās also a design for a daughter board which allows an LPG (or a Vactrol Mix) to be connected simultaneously to both the PULSES and GATES headers of the parent Turing Machine. A switch and a gate CV input (active when the switch is OFF) control which of the connections is active. Together with the R/C switching this gives 4 modes of operation - either LPG or Mix, driven by either PULSES or GATES.
No pictures as yet Iām afraid - Iām rather behind making panels for my current batch of modulesā¦
A little test module I designed and built today. It emits test CV and pulses.
4th row, right: Global voltage adjustment (-12V to +12V)
4th row, left: Emit global voltage while pushing the momentary button
3rd row: Coarse and fine adjustment of global voltage
2nd row: Global voltage adjustment with on/off toggle
1st row: 555 Timer sending 7V pulses, can adjust speed
The test lead with an alligator clip is an used Dremel bit with the head cut off!
Itās meant as a desktop box for testing, but itās Eurorack-sized, so I could mount it in a rack in the future.
Hello, it is good to have you back ! some people do make music with test equipment
Do you know of Hainbach?
Hahah yes I do, the āit good to have you backā was a joke around the fact that he is starting his videos like thisā¦ the more I explain the more it sounds like it wasnāt a very good jokeā¦