16

Ste

p S

eq

uen

cer (

Wit

h i

mp

ro

ved

PC

B) (

+/

9V

to

+/

-15

V)

Arti

cle

by R

ay W

ilso

n

Back to "Music From O

uter Space" Analog Synth Pages

Watc

h T

ho

mas W

hit

e's

Excell

en

tS

eq

uen

cer V

ideo

s o

n Y

ou

Tu

be

http://w

ww.youtube.com/w

atch?v=EU6d24_eZ08

http://w

ww.youtube.com/w

atch?v=AvZi-YMvHRE

http://w

ww.youtube.com/w

atch?v=s5cx6Z7wDOg

Thomas W

hite

used the M

FOS

sequencer

boards to

produce this

incredible

rotary

sequencer. Visit

his site to keep

up w

ith his

latest awesome

projects.

Featu

res

Improved PC board (far less kludging).

Produces sequences of 4 to 16 steps in length

Modes include stop at count, reverse at count,

reset at count and random 16 m

ode

Each step has coarse tune, fine tune, and switchable gate

Accepts external clock and external start pulse.

Sim

ultaneous outputs w

ith and w

ithout portamento.

Forw

ard, Back, and Reset controls ease sequence set up.

In

tro

du

cti

on

Please see the pages at 16 Step Analog Sequencer Circuit for details

regarding circuit descriptions etc. This page is here soley as a vehicle

to present the new PC boards and support board purchases. The

schematic and PCBs presented here incorporate all of the

improvements and m

odifications shown on the previous sequencer

pages. Panel to board w

iring is presented here. Please browse the

entire page before ordering board to ensure you understand the

circuit and there is enough inform

ation provided here for you to

successfully complete the project prior to purchasing PC boards.

Thanks.

Th

is is a

n a

dvan

ced

pro

ject

an

d I

do

no

t reco

mm

en

d it

as a

n in

term

ed

iate

or f

irst

pro

ject

if y

ou

are j

ust

gett

ing

sta

rte

d in

syn

ths o

r e

lectr

on

ics.

On

ly t

he c

ircu

it a

nd

so

me e

xp

lan

ati

on

are s

ho

wn

here.

A lo

t o

f p

ro

ject

bu

ild

ing

exp

erie

nce a

nd

ele

ctr

on

ics k

no

wle

dg

e a

nd

eq

uip

men

t o

wn

ersh

ip(sco

pe,

mete

rs,

etc

.) is t

aken

fo

r g

ran

ted

. If

yo

u a

re in

tereste

d in

bu

ild

ing

th

is p

ro

ject

ple

ase r

ead

th

e e

nti

re p

ag

e b

efo

re o

rd

erin

g P

C b

oard

s t

oen

su

re t

hat

the in

form

ati

on

pro

vid

ed

is t

ho

ro

ug

h e

no

ug

h f

or y

ou

to

co

mp

lete

th

e p

ro

ject

su

ccessfu

lly.

Buy 16 Step Sequencer (With improved PCB) PC Boards via PayPal

Tired of etchant eating your hands and the tedious w

ork of drilling hundreds of tiny holes. Tired of that tingly guilty feeling you

get as you flush ferric chloride into the environment. Then buy a ready-to-go, super high quality PC Board!

Pu

rch

ase P

rin

ted

Cir

cu

it B

oard

s o

nlin

e! Click the Add To Cart button to m

ake a purchase or go to PayPal to sign up for a

PayPal account. You can also set the number of boards you w

ould like to buy on the PayPal shopping cart page.

Please note that you are buying an u

n-p

op

ula

ted

PC

bo

ard only. The glass epoxy, double sided, plated through-hole PC board

is professionally m

anufactured, pre-drilled and silk-screened w

ith a parts layout legend. You m

ust purchase all of the parts for

the project and build it yourself. But since that is the w

hole idea behind D

IY (Do It Yourself) that's a good thing.

16

Ste

p S

eq

uen

cer (

Wit

h i

mp

ro

ved

PC

B) P

C B

oard

Siz

e (

6.3

" x

3

.3")

16

Ste

p S

eq

uen

cer A

nalo

g B

oard

PC

Bo

ard

Siz

e (

5.5

" x

2.6

")

(1

) 1

6 S

tep

An

alo

g S

eq

uen

cer P

C B

oard

Set

(1

DIG

ITA

L a

nd

1 A

NA

LO

G b

oard

) $

32

.00

(1

) 1

6 S

tep

SEQ

UEN

CER

DIG

ITA

L C

ON

TR

OL P

C B

oard

$2

0.0

0

(1

) 1

6 S

tep

SEQ

UEN

CER

AN

ALO

G P

C B

oard

$1

4.0

0

16

Ste

p S

eq

uen

cer D

igit

al

Bo

ard

In

form

ati

on

16

Ste

p S

eq

uen

cer (

Wit

h i

mp

ro

ved

PC

B) S

ch

em

ati

c P

ag

e 1

PD

F

Shipping Charges (increases effective Sep. 15, 2007)

The following tables show shipping and handling charges. The cost is based on

the total price of the order. M

ost US customers get their boards w

ithin a w

eek

and international shipping usually takes a w

eek or tw

o but... P

lease a

llo

w t

hree

weeks f

or d

eli

very w

ith

in t

he U

nit

ed

Sta

tes a

nd

fo

ur t

o f

ive w

eeks f

or

desti

nati

on

s o

uts

ide o

f th

e U

nit

ed

Sta

tes.

Do

mesti

c (

U.S

.) S

hip

pin

g a

nd

H

an

dli

ng

$0.01 to $50.00

$5.00 USD

$50.01 to $100.00

$6.00 USD

$100.01 to $200.00

$8.00 USD

$200.01 to $300.00

$10.00 USD

$300.01 and up

$15.00 USD

In

tern

ati

on

al

Sh

ipp

ing

an

d H

an

dli

ng

$0.01 to $50.00

$7.00 USD

$50.01 to $100.00

$8.00 USD

$100.01 to $200.00

$10.00 USD

$200.01 to $300.00

$12.00 USD

$300.01 and up

$20.00 USD

Have y

ou

mo

ved

?A

re y

ou

at

co

lleg

e?

Ple

ase e

nsu

re t

hat

yo

ur

PayP

al

sh

ipp

ing

ad

dress i

sco

rrect so that your order is not

delayed and/or you don't have to

pay for shipping again.

Ple

ase n

ote that if I have to

re-ship your order due to an

incorrect PayPal shipping address

I will request that you pay for

S&H again via PayPal.

16

Ste

p S

eq

uen

cer (

Wit

h i

mp

ro

ved

PC

B) S

ch

em

ati

c P

ag

e 2

PD

F

16

Ste

p S

eq

uen

cer (

Wit

h i

mp

ro

ved

PC

B) S

ch

em

ati

c P

ag

e 3

PD

F

16

Ste

p S

eq

uen

cer (

Wit

h i

mp

ro

ved

PC

B) P

an

el

Wir

ing

PD

F

16

Ste

p S

eq

uen

cer (

Wit

h i

mp

ro

ved

PC

B) B

oard

to

Pan

el

Wir

ing

PD

F

16

Ste

p S

eq

uen

cer (

Wit

h i

mp

ro

ved

PC

B) D

igit

al

Bo

ard

Parts

Lis

t

Qty

.D

escrip

tio

nV

alu

eD

esig

nato

rs

3

CD40106(s)

CD40106

U2, U1, U6

1

CD4013 D

ual D Flip Flop B

CD4013-B

U3

1

CD40193 4 Counter

CD40193

U4

1

CD4094 8 Stage Shift/Store Reg

CD4094

U8

1

CD4514 4 Bit Latched 4 D

ec.

CD4514

U5

1

TL082 D

ual Op Amp

TL082

U7

17

LED(s)

General Purpose LED

LED1, LED5, LED3, LED9, LED7, LED13, LED11, LED17, LED15,

LED4, LED2, LED8, LED6, LED12, LED10, LED16, LED14

31

1N914 Sw. Diode(s)

General purpose high

speed switching diode

D2, D5, D6, D7, D1, D11, D3, D4, D8, D31, D9, D15, D12, D19,

D17, D23, D21, D27, D25, D26, D24, D22, D20, D16, D18, D14,

D10, D13, D28, D29, D30

1

2N3904

2N3904

Q1

1

Tantalum Capacitor

1uF

C10

2

Ceramic Capacitor(s)

.001uF

C14, C12, C13, C18

5

Ceramic Capacitor(s)

.01uF

C22, C23, C1, C3, C8, C7, C15, C16

1

Ceramic Capacitor

.022uF

C9, C2, C4, C5, C6

2

Ceramic Capacitor(s)

.1uF

C19, C24

1

Ceramic Capacitor

100pF

C17

1

Ceramic Capacitor

47pF

C11

2

Electrolytic Capacitor(s)

10uF

C20, C21

1

Potentiometer

1M

R19

8

Resistor 1/4

Watt 5%(s)

100K

R47, R9, R46, R44, R45, R28, R26, R32

7

Resistor 1/4

Watt 5%(s)

10K

R1, R5, R10, R11, R17, R20, R39

4

Resistor 1/4

Watt 5%(s)

1K

R42, R41, R29, R27

4

Resistor 1/4

Watt 5%(s)

1M

R13, R14, R33, R38

1

Resistor 1/4

Watt 5%

20K

R18

4

Resistor 1/4

Watt 5%(s)

220K

R7, R3, R16, R21

2

Resistor 1/4

Watt 5%(s)

2M

R31, R35

1

Resistor 1/4

Watt 5%

3.9K

R43

2

Resistor 1/4

Watt 5%(s)

3K

R24, R30

3

Resistor 1/4

Watt 5%(s)

4.7K

R25, R37, R34

1

Resistor 1/4

Watt 5%

4.7M

R36

4

Resistor 1/4

Watt 5%(s)

47K

R40, R12, R8, R4

1

Resistor 1/4

Watt 5%

6.2K

R23

4

Resistor 1/4

Watt 5%(s)

680K

R2, R6, R15, R22

1

12 Pole Rotary Switch

SP12T

S9

1

1P4T Selector Switch

SP4T

S25

1

DPDT Switch

DPDT

S12

4

SPST PB Switch(s)

SPST

S1, S2, S3, S4

16

SPDT Switch (used to

accomodate the gate diode and

LED w

iring)

SPDT

S5, S7, S10, S13, S17, S19, S21, S23, S6, S8, S11, S14, S18,

S20, S22, S24

16

Ste

p S

eq

uen

cer A

nalo

g B

oard

In

form

ati

on

16

Ste

p S

eq

uen

cer (

Wit

h i

mp

ro

ved

PC

B) A

nalo

g B

oard

Sch

em

ati

c P

DF

Eit

her 2

.5 V

olt

Refe

ren

ce c

hip

will w

ork.

16

Ste

p S

eq

uen

cer (

Wit

h i

mp

ro

ved

PC

B) P

an

el

Wir

ing

Dia

gram

PD

F

16

Ste

p S

eq

uen

cer (

Wit

h i

mp

ro

ved

PC

B) G

ate

Sw

itch

Wir

ing

Deta

il P

DF

16

Ste

p S

eq

uen

cer (

Wit

h i

mp

ro

ved

PC

B) B

oard

to

Pan

el

Wir

ing

Lab

els

PD

F

16

Ste

p S

eq

uen

cer A

nalo

g B

oard

An

alo

g B

oard

Parts

Lis

t

Qty

.D

escrip

tio

nV

alu

eD

esig

nato

rs

1

CD4067 Analog

Mux/D

eMux

CD4067

U2

1

TL082 D

ual Op Amp

TL082

U3

1

TL084 Q

uad O

p Amp

TL084

U1

1

LM336 2.5V Ref.

LM336-2

.5V

VS1

32

Potentiometer(s) (don't

forget to buy knobs)

100K (up to 500K w

ill

work fine.)

R11, R19, R32, R38, R46, R54, R63, R69, R4, R8, R18, R35, R44, R53,

R62, R13, R22, R40, R34, R48, R57, R71, R66, R7, R15, R30, R24, R42,

R50, R67, R59, R28

1

Potentiometer

1M

R51

18

Resistor 1/4

Watt 1%(s)

100K

R10, R31, R45, R17, R36, R12, R33, R47, R65, R6, R41, R58, R5, R52,

R23, R64, R26, R73

3

Resistor 1/4

Watt 1%(s)

10K

R74, R72, R1

1

Resistor 1/4

Watt 1%

200K

R25

1

Resistor 1/4

Watt 1%

22 ohms

R75

16

Resistor 1/4

Watt 1%(s)

2M

R27, R20, R37, R68, R21, R39, R70, R14, R29, R49, R9, R60, R55, R61,

R56, R43

2

Resistor 1/4

Watt 1%(s)

47K

R3, R2

2

Ceramic Capacitor(s)

0.1uF

C4, C1

2

Ceramic Capacitor(s)

470pF

C6, C5

2

Electrolytic Capacitor(s)

100uF

C3, C2

Parts

Layo

uts

(cli

ck i

mag

e f

or P

DF):

Pan

el

Overla

ys (

cli

ck i

mag

e f

or P

DF):

Mis

cellan

eo

us

1/1

6" to 1/1

0" Thick aluminum plates for mounting the pots and switches.

Wood or plastic to build a case w

ith.

Assorted hardware 1" 6-3

2 nuts and bolts, 1/2

" #8 w

ood screws, etc

Knobs for potentiometers, wire and solder.

Digital Volt M

eter and a Signal Tracer or oscilloscope for testing.

All Content Copyright Ray W

ilson and M

FOS 2007/2

008