Sampler DIY Kit 4U LW

Description

Record, play and loop stereo .wav files with a microSD card.

Github

The Sampler plays stereo or mono .wav files from an SD Card. Samples are arranged into banks by placing .wav files into folders (each folder is a bank). A maximum of 10 samplers can be loaded in a bank, and there is a maximum of 60 bank (600 samples maximum total).
Sample files are limited to 4GB each, which is over 6 hours at 44k/16b/stereo.

• Hundreds of samples included on microSD card
• Extremely quiet, low noise and low jitter design
• Stereo or Mono output

A knob and CV jack selects the Sample to play, and the Start Position knob and CV jack control where in the sample playback will begin. The Length knob and CV jack determine how much of the sample is played back: from tiny grains, to percussive hits, to longer loops… or just the entire file.
Pressing Play or firing a trigger into the Play Trig jack will play the sample. Holding the Play button down for a second will toggle looping.
There’s also a Reverse button and jack for backwards playback, and an End Out jack for synchronizing loops, or cascading sample playback with other events.
To record samples, hold Play and Reverse for two seconds. Press Play again or fire a trigger into the Play/Rec Trig jack to start and stop recording. Each recording will create a new stereo 48kHz 24bit .wav file in the current bank’s folder. Recordings can be as long as your card has the capacity for: a 256GB card is 18 days of continuous recording (432.9 hours). Audio data is split into maximum 4GB wav files on the microSD card.

 

• Play button/trigger jack: Tapping the button or receiving a trigger starts/re-starts the sample
• Sample CV/knob: select which sample within the channel’s bank
• Pitch CV and Pitch knob: playback pitch (-10 to +4 octave range)
• Start Pos CV/knob: position in the sample to begin playback (loop start point)
• Length CV/knob: playback time (loop end point)
• Length knob at max: entire file is played
• Length knob 50%-99%: 200ms – 5s of the sample is played (beginning at the Start Position)
• Length knob <50%: Percussive decay envelope is applied to the playback (attack-only envelope if playing Reverse)
• Length <1%: Tiny grains are played (can be used to sweep through sample file data manually)
• Reverse button/jack: toggles forward/backwards
• Bank button: selects channel’s bank
• Reverse+Start Pos button/knob combo allows for setting volume of playback
• Maximum file size for playback: 4GB per file (6.7 hours per file at 44.1kHz/16b/stereo)
• microSD Card is hot-swappable when Busy light is off: no power-down required to change cards.
• Samples that are pre-loaded into memory can continue playing while card is swapped.