This a digital noise generator with multiple tone controlling options. It also supports MIDI.
It's quite hard to make noise with analog circuits in a system running at 3.3V. That's why we're using a Microcontroller (ATtiny1616) to generate noise.
Inputs
- MIDI MIDI input to control the noise generator
- NC Not connected
- NC Not connected
- TX Debug pin for the microcontroller
- UPDI Programming pin for the microcontroller
Outputs
- MIDI MIDI THRU (passthrough) output
- WHITE White noise output
- WHITE White noise output
- BLUE Blue noise output
- PINK Pink noise output
Controls
- TONE: Controls the tone by changing the sampling rate of the noise. Left is higher sampling rate, right is lower.
- BLUE TONE: RC Highpass Filter for the blue noise.
- PINK TONE: RC Lowpass Filter for the pink noise.
MIDI
- CC 74: Adds to the TONE control value.
Inputs
- MIDI MIDI input to control the noise generator
- NC Not connected
- NC Not connected
- TX Debug pin for the microcontroller
- UPDI Programming pin for the microcontroller
Outputs
- MIDI MIDI THRU (passthrough) output
- WHITE White noise output
- WHITE White noise output
- BLUE Blue noise output
- PINK Pink noise output
Additional Parts
This section is only relevant if you are buying the semi-assembled module. You have to source & solder the following parts. You can check our guide on common parts for where to source these components.
- 2.54mm Header Pins (5-pin) - 2
- Circular Pin Header Sockets (5-pin) - 2
- 50K Potentiometers - 1 (Tone)
- 1M Potentiometers - 2 (BLUE Tone & PINK Tone)