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 Forum index » DIY Hardware and Software » Arduino
RhythmMaster 85
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Hammer



Joined: Mar 13, 2018
Posts: 28
Location: Russia, Zhukovsky
Audio files: 10

PostPosted: Sat May 26, 2018 4:56 am    Post subject:  RhythmMaster 85 Reply with quote  Mark this post and the followings unread

Hello!

This is RhythmMaster 85S (S mean simplified) device. It makes hi-hat and snare beats out of white noise generated by TL-431.

Full version have external clock source and bass drum generator with sidechaining feature. Still in progress.

1. When you will turn on this device, you will hear white noise with periodic scratches. If you do not hear the scratches, just wait until ATTiny85 will warm up or cold down.

2. Turn the knob, it will change beats.

3. Push the buttont once, it will change knob mode. In this mode turn the knob, it will change decay.

4. Push the button, hold it and turn the knob, it will change tempo.

Code: https://github.com/youcantignoremytechno/RhythmMaster_85S


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RhythmMaster 85S
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RhythmMaster 85S circuit diagram
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Last edited by Hammer on Wed Jun 13, 2018 6:51 am; edited 1 time in total
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Hammer



Joined: Mar 13, 2018
Posts: 28
Location: Russia, Zhukovsky
Audio files: 10

PostPosted: Sat May 26, 2018 4:59 am    Post subject: Reply with quote  Mark this post and the followings unread

To make it more interesting, play with envelope forms and noise timbre.

Examples:


rhythmmaster_85s_vinyl_noise.mp3
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rhythmmaster_85s_beats.mp3
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rhythmmaster_85s_tempo.mp3
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rhythmmaster_85s_decay.mp3
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StormB



Joined: Aug 15, 2013
Posts: 18
Location: Germany

PostPosted: Tue Jun 12, 2018 6:37 am    Post subject: Reply with quote  Mark this post and the followings unread

Hi Hammer,
wich Bootloader need 1 or 8 MHZ ?
and how much for the Sketch 16 MHZ?
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Hammer



Joined: Mar 13, 2018
Posts: 28
Location: Russia, Zhukovsky
Audio files: 10

PostPosted: Tue Jun 12, 2018 6:58 am    Post subject: Reply with quote  Mark this post and the followings unread

I'm always using 16mHz. In this project you don't need bootloader, because there are no USB port, only power from USB. Use another Arduino as programmer or use USBasp - the best.
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StormB



Joined: Aug 15, 2013
Posts: 18
Location: Germany

PostPosted: Wed Jun 13, 2018 5:55 am    Post subject: Reply with quote  Mark this post and the followings unread

Hidiho Hammer,
wich transistor is right 2x 3904 npn or 2x3906 pnp
in your schematic you have 1 x3904 and 1x3906
but the symbol is for 2 x3906
thanks
StormB
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Hammer



Joined: Mar 13, 2018
Posts: 28
Location: Russia, Zhukovsky
Audio files: 10

PostPosted: Wed Jun 13, 2018 6:53 am    Post subject: Reply with quote  Mark this post and the followings unread

Sorry for mistake! I've update circuit diagram.

Left - 2N3904 NPN, Right - 2N3906 PNP
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Hammer



Joined: Mar 13, 2018
Posts: 28
Location: Russia, Zhukovsky
Audio files: 10

PostPosted: Sun Jul 01, 2018 10:42 am    Post subject: Reply with quote  Mark this post and the followings unread

Syncronized with DIY CV/Gate converter and soviet RITM-2 synth: https://www.youtube.com/watch?v=3kAqZwofJxg

Still without tom, but it will be soon.
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Hammer



Joined: Mar 13, 2018
Posts: 28
Location: Russia, Zhukovsky
Audio files: 10

PostPosted: Mon Jul 16, 2018 6:00 am    Post subject: Reply with quote  Mark this post and the followings unread

I've used for tom/kick Wien bridge based oscillator. I'ts working great with 4069. Only sidechaining part of the main circuit still isn't ready.

But I started to make case out of e-bike controller box. Sides are laser cutted vinyl.


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