Basic VCO ttt

 
 

 

IN STOCK

 

Analogue triangle core VCO/LFO .

 

 

 

  • Analogue triangle core VCO/LFO.
  • THAT2180 in the core.
  • Sine, triangle, saw and pulse waves.
  • Reset sync.
  • Exponential FM.
  • Pulse width modulation.
  • 10HP Eurorack module.
  • VCO range is 11 octaves. LFO range is 11 octaves too but 100 times slower.
  • Power consumption: V+ 33mA, V- 34mA.

 

PCB - 2mm thickness, gold platted, black mask. $25

Two panels - 10HP front & back. Anodized alu, black print. $25

SMD parts + soldering. $10

2 tempco resistors $3

Shipping per set: $5 - only boards, $8 - boards+panels.

 

TOTAL for complete set with shipping: $71

 

Paypal: info(at)greenexpo.by

 

Assembled module $260 + $10 shipping.

 

MUFFWIGGLER forum thread http://www.muffwiggler.com/forum/viewtopic.php?t=119355

 

VCO has perfect tracking over all range. Sine then Triangle then Saw then Square were recorded. Watch and listen:

 

 

 

Documents:

 

Partslist.

 

Trimming.

 

PCB top.

 

PCB bottom.

 

Front panel.

 

Back panel.

 

 

SHOPPING CARTS :

 

 

L-1 Basic VCO - Mouser shopping cart http://www.mouser.com/ProjectManager/ProjectDetail.aspx?AccessID=c868598223
MERCHANDISE TOTAL: $48.95 (USD)

 

The module needs two good capacitos for VCO and LFO timing. There no polystyrene caps in Mouser. But there are mica caps. They are very good but 10n a bit expensive and too high (about 20mm) but I think it's possible to mount it with some bent.
Farnell has polystyrene caps in stock (links are in the partslist).

 

Mica capacitors for L-1 Basic VCO - Mouser shopping cart http://www.mouser.com/ProjectManager/ProjectDetail.aspx?AccessID=25b3ee05a9
MERCHANDISE TOTAL: $14.15 (USD)

 

Parts not included in Mouser shopping carts:

 

4 potentiometers
4 knobs

 

Where to buy?

 

1. Thonk:
pots: http://www.thonk.co.uk/shop/alpha-9mm-pots/
knobs: http://www.thonk.co.uk/shop/synth-pointer-knobs/

 

2. Erthenvar:
pots: http://erthenvar.com/store/accessories/pots/9mm-vertical-pots

 

3. Smallbear:
pots: http://smallbear-electronics.mybigcommerce.com/alpha-single-gang-9mm-right-angle-pc-mount/
knobs: http://smallbear-electronics.mybigcommerce.com/synth-pointer-2-colors/

 

4. Tayda:
pots: http://www.taydaelectronics.com/potentiometer-variable-resistors/rotary-potentiometer/linear/50k-ohm-linear-taper-potentiometer-round-shaft-pcb-9mm.html

 

Jacks.

 

I included into Mouser shopping cart 8 Kobiconn jacks. But they need to solder a leg for ground connection.
Better choise is Inline jacks:

 

1. Thonk: http://www.thonk.co.uk/shop/thonkiconn-3-5mm-jack-sockets-x50/

 

2. Erthenvar: http://erthenvar.myshopify.com/products/3-5mm-inline-jacks

 

 

THAT chips on Etsy:

 

https://www.etsy.com/shop/RockmoreLabs?section_id=17400134

 

 

Photos:

 

 

 

 
 

(c) 2015 L-1 Synhesizer. E-mail: info@greenexpo.by