background image

The 

ENV OUT 

and

 5V ENV 

lights show the current threshold. Each light can be one of five possible 

colors: off, blue, purple, red, white. Off is the lowest value and white is the highest value. There are 25 

possible values. The 

ENV OUT 

light is weighted more than the 

5V ENV 

light. 

The lowest threshold is represented by both lights being off. The next higher threshold value is when 

ENV OUT 

is off and 

5V ENV 

is blue. The highest value is when both lights are white. 

The module starts bootloader mode with the threshold near the middle of the range: both lights purple. 

Each time you press 

Cycle, 

the threshold will increase and the lights will change. Once you get to both 

lights being white (highest threshold), it will cycle back around to both lights being off (lowest threshold). 

If you have trouble loading a firmware file and have already tried a different device and checked your 

volume, then adjusting the threshold may help. The best approach is to try different values until you find 

one that works. 

Troubleshooting 

• Make sure the volume on your device and app are at 100%. 

• Try a different computer or device. 

• Do not use sophisticated playback software such as Ableton, as these can inadvertently alter the 

encoded audio. Use the most basic playback program available. 

• Adjust the threshold (see above) 

• If you have an oscilloscope or a way to view waveforms, compare the output of the 

EOF 

jack 

with the output of the computer or device. Adjust the threshold using the 

Cycle

 button until the 

pulses are similar (accounting for about 40

µ

s-80

µ

s of latency, and of course amplitude 

differences). 

• Use a line-to-Eurorack module, such as the 

Listen IO

, between the computer and the 

Mini PEG

Viewing the Firmware Version 

On power-up, the 

Mini PEG 

displays its firmware version by flashing two colors on the 

Ping 

button. 

The first color turns on immediately after power-up, then the light turns off for a moment and the second 

color turns on. As of this manual printing, the latest (and only) version number is 1.0. 

Red, then White = 1.0 

System Mode 

System Mode allows you to change the way the 

Mini PEG 

works. To enter System Mode, hold down 

the 

Cycle 

button for 3 seconds. When the lights flash to confirm entry into System Mode, release the 

button. 

You can exit System Mode at any time by holding down either the 

Ping 

button or the 

Cycle 

button for 3 

seconds. If you exit with the 

Cycle 

button, your changes will be active but will not be saved after you 

power down (the previous saved values will be restored). If you exit with the 

Ping 

button, your changes 

will be saved. 

If you enter System Mode with 

Cycle 

on, the envelope will continue to cycle while you remain in 

System Mode, but you will be unable to adjust its parameters. 

Saving the Clock Time and Cycle State 

The ping clock period and the state of the 

Cycle 

button can be saved so that the next time you power-

on, the 

Mini PEG 

will load the saved values. 

If you are using an external clock patched into the 

Ping 

jack or received over Clock Bus, the tempo of 

that clock will be saved. If you tapped a tempo on the 

Ping 

button, that tempo will be saved. In either 

case the tempo before 

Div/Mult

 is applied will be saved. 

Whether or not the module is cycling will also be saved. If the 

Cycle 

button is illuminated at the moment 

you enter System Mode, then the module will turn 

Cycle 

on when you next power-on. 

First Color

Second Color Version

Red

White

1.0

Page   of 

10

12

Summary of Contents for Mini PEG

Page 1: ...nd interpolated curves Cycle button and gate jack for looping envelopes Scale knob acts as attenuating inverter for main envelope output Maximum 9 5V peak to peak Offset knob for setting DC offset ranging from 9 4V to 9 4V End of Fall EOF output jack goes high when envelope finishes a fall portion and low when envelope begins a fall portion Jack can also be configured as End of Rise Half Rise or T...

Page 2: ...ed but incorrectly connecting any module in any system can damage other modules on the power bus Setting up your Mini PEG 2 Overview 3 Beginning Patch 3 Control Details 4 Ping 4 Div Mult 4 Cycle 5 Trigger 5 Shape 5 Scale 5 Offset 5 ENV OUT 6 EOF 6 Maximum and Minimum Clock Times 6 Sync and Async Modes 7 Changing between Sync and Async Mode 7 Cycle Button in Sync and Async mode 7 Modulating Div Mul...

Page 3: ...ite at the tempo you tapped If you give a third tap the time between taps will be averaged You could also run an external clock into the Ping jack when a trigger is received on the Ping jack the internal tap tempo clock is stopped Step 3 Provide a trigger source Like any envelope module the Mini PEG will produce an envelope when it receives a trigger Also like many envelope modules it can be set t...

Page 4: ...n if you don t provide any more trigger pulses Note in System Mode you can disable this free running feature thus giving the Mini PEG two external pulses will output just one envelope and then stop See the System Mode section When a gate is received on the Ping jack the tap tempo clock is disabled Conversely when the Ping button is tapped the external clock will be overridden Try tapping a fast te...

Page 5: ...mes and the selection of waveshapes logarithmic linear exponential While there is a continuous spectrum of waveshapes the range can be divided into three zones The first zone is from fully counter clockwise to around 9 30 Turning the knob clockwise the envelope starts as a ramp up exponential shape and slowly turns to a linear ramp up shape The transition from the first zone to the second zone goe...

Page 6: ...nd of Rise jack a Half Rise jack or a Tap Clock output jack End of Rise EOR goes high when a fall segment starts and stays high if it stops and goes low when a rise segment starts and stays low if it sustains This jack could be called Envelope is Falling or Stopped Half Rise goes high when the rise portion is half way finished stays high through any sustain period and goes low when the fall portio...

Page 7: ...When you turn on the Cycle button in Sync mode the envelope will immediately start outputting from the same phase as the ping clock You can imagine this as if the envelope was always running in sync with the ping clock and the Cycle button un mutes it See Figure 2 This can cause some discontinuities but the envelope will always be in sync with the ping clock When you turn Cycle off the output will...

Page 8: ...so that it starts on the 3 See Figure 8 This can be useful for multi phase outputs e g Quadrature patch Tap Clock Output The EOF jack can be configured to output a tap tempo clock This is done in System Mode see System Mode section When configured as Tap Clock whatever tempo you tap on the Ping jack will be steadily output on the EOF jack Unlike configuring the EOF jack as End of Rise End of Fall ...

Page 9: ...odule When a firmware update is available it will be posted on 4mscompany com as a WAV file or zipped WAV file Updating Firmware 1 Download the audio firmware file and prepare to play it on your computer or mobile device 2 Set your computer or device volume to maximum both in the system OS controls and also in the audio player application 3 Power off the Mini PEG and unpatch all cables 4 Patch the...

Page 10: ...urorack module such as the Listen IO between the computer and the Mini PEG Viewing the Firmware Version On power up the Mini PEG displays its firmware version by flashing two colors on the Ping button The first color turns on immediately after power up then the light turns off for a moment and the second color turns on As of this manual printing the latest and only version number is 1 0 Red then W...

Page 11: ...lse width of the EOF light shows whether the EOF jack outputs gates or triggers When set to gates the EOF light will flash equally on and off When set to triggers the EOF light will flicker briefly on Press the Ping button to toggle 5 Free running Ping The Ping button light will be flashing white or red All other lights will be off The Ping button shows whether the ping clock keeps running after a...

Page 12: ...30mA Envelope Outputs Maximum voltage range ENV OUT 9 4V to 9 4V Maximum amplitude ENV OUT 9 5Vpp Voltage range 5V OUT 0V to 5V Frequency range 0 1dB DC to 1kHz 1 0dB 2 5kHz 2 0dB 4kHz 12 bit 40kHz sample rate Clock Range Period range 29 16 hours to 250µs 4kHz CV Inputs Div Mult and Shape Voltage range 5V to 5V Gate Inputs Ping Trigger Cycle Rising edge threshold 2 5V Page of 12 12 ...

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