Archive of the former Yahoo!Groups mailing list: MOTM

previous by date index next by date
previous in topic topic list next in topic

Subject: Re: Vote for VCLFO design!

From: "Paul Schreiber" <synth1@...
Date: 1999-05-04

Well, the early voting favored the 1U, but the 2U faction has come on
strong!

Actually, a 2U is looking better since originally I thought I could fit all
of the circuitry
on the smaller pcb (ie MOTM-800 size) but that's not going to happen!

If we can get Dave Tr. away from his MOTM-300 kits, perhaps he can gen up a
front
panel shot.

Maybe:


LED FREQ

CVMOD WAVE

RANGE SHAPE

SHAPE CV MOD


1V/O CVIN SHAPE IN SYNC
SINE TRI RAMP PULSE


8 jacks, 4 pots, 1 LED, 1 rotary switch, 1 toggle switch, 2U wide

That's in the $135 ballpark. But on the HI range it is a mini VCO, probably
as good as the
ASM-1 or a tomg circuit. It is temperature conensated somewhat, although to
be accurate
you need a 1V/Oct trim pot (currently not there). I guess I can add a 1-turn
trimmer for this.
(the 25-turn ones in the VCOs are $$$).

The LEDS are all bought and paid for! The nice thing about them is that the
leads are pre-soldered
and pre-heatshrinked. The ever astute readers will see a soldering to the
pcb dilemma. I will
probably have 2 "turrent posts" (like on the Power One supply) the LED leads
solder to on the top
of the pc board.

Yes, they are from LUMEX so they have the same press-fit housing with the
lens assembly as the one in the '700
kit.

BTW this will me the MOTM-320 SUPER LFO unless you'all can pick a better
one.

Paul S.