Basic VCO ttt

 
 

 

IN STOCK

 

Analogue triangle core VCO/LFO .

 

 

L-1 Basic VCO. 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

 

Skrill: info(at)greenexpo.by

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