fn_block 01: operating instructions

⁃power using usb-c cable and power supply.

⁃connect audio cable into the audio out jack (3.5mm) then connect cable into mixer, headphones, or powered speaker. 

⁃connect a TRS MIDI (type A) output signal cable from an external device into the ‘midi in’ input. older gear outputting midi via 5-pin DIN is compatible! you simply need a DIN 5-pin to TRS 3.5mm MIDI (type A) adapter cable.  

⁃fn_block 01 can also be controlled externally via analog control voltages. connect control voltages (cv) from an external device to the (11) cv input pegs using crocodile clip patch wires (2 wires included) a full set of 10 wires can be purchased separately here:   https://t.ly/MVtDl   (or search amazon for "crocodile clip test leads")

⁃pitch a,b,c,d input cv pegs respond to 1V per octave (0-5V range). pitch inputs are quantized! this means that incoming control voltages will ‘step’ between the 12 notes of the chromatic scale. pitch voltages that exist in-between half step/whole step note values will be ignored.    

⁃trig a,b,c,d input cv pegs respond to trigger and gate signals above +2 Volts

⁃waveform, envelope, octave input cv pegs respond to voltages (0-5V)

⁃use touch pad buttons to change waveform (1-25), envelope (1-6), and octave (1-6) 

⁃6 preset amplitude envelope shapes consist of (4) ‘fast attack’ envelopes and (2) ‘long attack’ envelopes.   

⁃audio and midi can also be accessed through the metal pegs provided (use crocodile clip patching wires) these access points can work as either inputs or outputs. 

Included audio waveforms: 

1- sine1

2- fmsynth1

3- electric piano1

4- triangle1

5- fmsynth2

6- square1

7- saw1

8- fmsynth3

9- distorted1

10- distorted2

11- human voice1

12- human voice2

13- blended1

14- human voice3

15- overtone1

16- fmsynth4

17- fmsynth5

18- overtone2

19- overtone3

20- blended2

21- blended3

22- blended4

23- blended5

24- blended6

25- blended7

hold down ‘waveform’ touch pad button for 5 seconds (until lights flash) to toggle midi input mode between ROUND ROBBIN (default) (incoming midi notes override held notes) and SELECTIVE (incoming midi notes are ignored if all notes are being held in sustain) 


hold down 'envelope' touch pad button for 5 seconds (until lights flash) to toggle between 4 Volt and 5 Volt input mode. by default, all control voltage input pegs are set to respond to input voltages ranging from 0-4V. this is the fn_block standard. however, certain external gear may output voltage signal levels between 0-5V. change the input voltage range from 0-4v to 0-5v by holding down the ‘envelope’ button for 5 seconds. the two lights on the right will flash 5 times when switching over to 0-5V mode. The two lights on the left will flash 4 times when switching back into 0-4V mode. changing this setting will be saved to EEPROM memory and will remain after power is turned off, this means you won’t have to keep changing this setting every time you power up the device. 

achieve 8 voice polyphony using two fn_block 01 units connected together! hold down ‘octave’ touch pad button for 5 seconds (until lights flash) to toggle between 4 and 8 voice (dual-unit) mode. in 8-voice mode, every other incoming midi note is ignored. when two fn_block 01 units are sharing a midi signal, BOTH units are set to 8-voice mode, AND units are staggered (let one unit be triggered by a midi note while the other is disconnected. THEN connect both units to the same midi signal)  the two units will operate as a single 8-voice unit for double polyphony.