Bastl Trinity Poly 1.1

Open-source, DIY, handmade, hackable, repairable!

• software hacking instructions – instructable
• Bastl library with all source codes – gitHub
• Atmega 328 chip reprogrammable by Arduino IDE (Arduino Uno compatible bootloader)
• runs Mozzi library in HI-FI mode
• schematics pdf
• midi implementation chart (you are able to add comments)
• more instructables coming soon

Instrument specific features

• subtractive or FM synthesis mode
• 3 voice polyphony
• 6 different sound for each preset
• 6 presets
• in subtractive mode: oscillator + state variable filter with cutoff and resonance ( LP,HP,BP,notch )
• in FM mode: oscillator + modulation oscillator with selectable wavetables
• LFO with adjustable rate, resolution, amount, destination on different parameters and 8 different shapes
• ADSR with impact on volume and adjustable impact to other parameters
• precise setting of oscillator, LFO and ADSR features are accessed by adjusting character knob which goes thru all possible settings of routing and wavetables
• exchange sounds between more Poly Synths by SysEx message
• 4 wavetables (sine, saw, distorted square, noise)
• 3 note playback by MIDI – velocity sensitive
• multi-timbral MIDI mode (lowest octave)
• MIDI native by side connectors, note & velocity sensitive, CC support, thru
• MIDI connector by connecting MIDI Bastl by the side