View source for Lil' Erebus

[[Category:Projects|Lil]]
Lil' Erebus is a paraphonic synthesizer Eurorack module DIY kit by Dreadbox.
The desktop version includes the synth, and an Eurorack power supply board.
== Documentation ==
[https://www.dreadbox-fx.com/wp-content/uploads/2018/11/lilerebus_manual.pdf User manual]

[https://www.dreadbox-fx.com/wp-content/uploads/2018/04/Lil_Erebus_DIY_Kit_construction_manual.pdf Construction manual]

[https://www.dreadbox-fx.com/wp-content/uploads/2018/05/schematic-pcb_layout.pdf Schematic (for debugging purposes)]

== Using the Lil' Erebus ==
* Connect to a sequencer/DAW using your preferred method (CV/Gate or MIDI using the DIN5 to 3.5mm adapter)
* Connect a 15VDC center positive power supply to the synth (IMPORTANT: check polarity and voltage using multimeter if not sure)
* Connect your speakers/headphones to the OUT jack on the ECHO/AMP section of the synth
* An infinite note will probably play, use that to tune the synth with the TUNE knob and a guitar tuner
* Program your sequence and start the sequencer. The synth should play what you've told it to.

== Troubleshooting ==

* No sound 
**Check:
*** Pin 4 of IC5 (ATMega328). You should see a pulse each time the synth gets triggered by MIDI
*** All outputs of IC10, IC21, IC7, IC26 and IC2. You should see a waveform consistent with your VCO levels (LVL1 for sawtooth and LVL2 for pulsewave)
* No power
** Check diode on power supply board. Be careful-er with voltage and polarity.