zelf bouw drum synthje [leuk ]

[R-ond]

http://stereoping.com/diy_microcontroller_drumsynth.htm

Project 4 - 'TinyRhythm' - µController-drumsynth 05/2009

No samples, just digital synthesis with noise, squarewaves, envelopes. The first test sounds resembled a bit on the c64 sid.

Features

* midi to trigger interface, velocitysensitive
* learnfunction for setting midichannel
* 5 (or 8?) voices, each with 4 parameter-knobs
* each voice based on cheap 8bit-tiny13-controller
* as FEW electronic parts as necessary
* individual-outputs
* modular hardwaredesign with standardized connectors -> easyly interchangegable soundmodules
* CUTE hardware design

... on to the projects page for the TinyRythm

 

[R-ond]

Bassdrum

The bassdrum consists of an everrunning squarewaveoscillator with a digital envelope inside a tiny13. The controller reads 3 ADC-channels from the 3 parameter pots and alters them into frequency manipulation. The digital envelope gets triggered by a fourth ADC - this means we need to disable the reset-pin to be able to use the adc on this pin. Therefore we need to highvoltage serial program the tiny13 resulting in more complex cabeling while developing.

The squarewave is made a bit more triangle by a fixed, simple lowpassfilter and then fed into a very simple vca which is opened by an analogue enevelope. VCA and envelope are taken from the schematics of the dr110.

Beside the squarewave, the controller also outputs the triggersignal to start the analogue envelope.

MY GOD THIS LOOKS SIMPLE

 

[R-ond]

BASIS BOARD 10 EU ...?

Base board

The base board is finished. All features are working.

* Midi in with 'learn'able channel which is stored even when switched off
* fixed notenumbers, starting with C3
* velocity-data is converted into 3 different trigger-strengths
* very accurate timing
* 8 channels with modular connectors
* very few parts and very cheap hardwaredesign (cost about 10 €)

 

[falafelbiels]

lijkt ook leuk, maar triggeren zonder midi lijkt me nog leuker hoor.

 

[Wmonk]

Leuk drumbakje. Vanwege het modulaire karakter moet het mogelijk zijn zelf wat sounds toe te voegen. Om zo al naar gelang de behoefte verschillende drumkits te hebben :-)