16 step sequencer

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16 Step Sequencer (With improved PCB) (+/9V to +/-15V) Article by Ray Wilson Back to "Music From Outer Space" Analog Synth Pages Watch Thomas White's Excellent Sequencer Videos on YouTube http://www.youtube.com/watch?v=EU6d24_eZ08 http://www.youtube.com/watch?v=AvZi-YMvHRE http://www.youtube.com/watch?v=s5cx6Z7wDOg Thomas White used the MFOS sequencer boards to produce this incredible rotary sequencer. Visit his site to keep up with his latest awesome projects. Features 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 mode Each step has coarse tune, fine tune, and switchable gate Accepts external clock and external start pulse. Simultaneous outputs with and without portamento. Forward, Back, and Reset controls ease sequence set up. Introduction 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 modifications shown on the previous sequencer pages. Panel to board wiring is presented here. Please browse the

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16 Step Sequencer (With improved PCB) (+/9V to +/-15V)

Article by Ray Wilson

Back to "Music From Outer Space" Analog Synth Pages

Watch Thomas White's Excellent Sequencer Videos on YouTube

http://www.youtube.com/watch?v=EU6d24_eZ08 http://www.youtube.com/watch?v=AvZi-YMvHRE http://www.youtube.com/watch?v=s5cx6Z7wDOg

Thomas White used the MFOS sequencer boards to produce this incredible rotary sequencer. Visit his site to keep up with his latest awesome projects.

Features

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 mode Each step has coarse tune, fine tune, and switchable gate Accepts external clock and external start pulse. Simultaneous outputs with and without portamento. Forward, Back, and Reset controls ease sequence set up.

Introduction

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 modifications shown on the previous sequencer pages. Panel to board wiring is presented here. Please browse the

entire page before ordering board to ensure you understand the circuit and there is enough information provided here for you to successfully complete the project prior to purchasing PC boards. Thanks.

This is an advanced project and I do not recommend it as an intermediate or first project if you are just getting started in synths or electronics. Only the circuit and some explanation are shown here. A lot of project building experience and electronics knowledge and equipment ownership (scope, meters, etc.) is taken for granted. If you are interested in building this project please read the entire page before ordering PC boards to ensure that the information provided is thorough enough for you to complete the project successfully.

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

Tired of etchant eating your hands and the tedious work 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!

Purchase Printed Circuit Boards online! Click the Add To Cart button to make a purchase or go to PayPal to sign up for a PayPal account. You can also set the number of boards you would like to buy on the PayPal shopping cart page.

Please note that you are buying an un-populated PC board only. The glass epoxy, double sided, plated through-hole PC board is professionally manufactured, pre-drilled and silk-screened with a parts layout legend. You must purchase all of the parts for the project and build it yourself. But since that is the whole idea behind DIY (Do It Yourself) that's a good thing.

16 Step Sequencer (With improved PCB) PC Board Size (6.3" x 3.3")

16 Step Sequencer Analog Board PC Board Size (5.5" x 2.6")

(1) 16 Step Analog Sequencer PC Board Set (1 DIGITAL and 1 ANALOG board) $32.00

(1) 16 Step SEQUENCER DIGITAL CONTROL PC Board $20.00

(1) 16 Step SEQUENCER ANALOG PC Board $14.00

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. Most US customers get their boards within a week and international shipping usually takes a week or two but... Please allow three weeks for delivery within the United States and four to five weeks for destinations outside of the United States. Have you moved? Are you at college?

Domestic (U.S.) Shipping and Handling

$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

Please ensure that your PayPal shipping address is correct so that your order is not delayed and/or you don't have to pay for shipping again.

$300.01 and up

$15.00 USD

International Shipping and Handling

$0.01 to $50.00

$7.00 USD

Please note 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.

$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

16 Step Sequencer Digital Board Information

16 Step Sequencer (With improved PCB) Schematic Page 1 PDF

16 Step Sequencer (With improved PCB) Schematic Page 2 PDF

16 Step Sequencer (With improved PCB) Schematic Page 3 PDF

16 Step Sequencer (With improved PCB) Panel Wiring PDF

16 Step Sequencer (With improved PCB) Board to Panel Wiring PDF

16 Step Sequencer (With improved PCB) Digital Board Parts ListValue CD40106 CD4013-B CD40193 CD4094 CD4514 U2, U1, U6 U3 U4 U8 U5 Designators

Qty.

Description

3

CD40106(s)

1

CD4013 Dual D Flip Flop B

1

CD40193 4 Counter

1

CD4094 8 Stage Shift/Store Reg

1

CD4514 4 Bit Latched 4 Dec.

1 General Purpose LED General purpose high speed switching diode 2N3904 1uF .001uF .01uF .022uF .1uF 100pF 47pF 10uF 1M 100K 10K 1K 1M 20K 220K 2M 3.9K 3K 4.7K 4.7M 47K 6.2K 680K SP12T SP4T DPDT SPST SPDT S9 S25 S12 S1, S2, S3, S4 S5, S7, S10, S13, S17, S19, S21, S23, S6, S8, S11, S14, S18, S20, S22, S24 R23 R2, R6, R15, R22 R36 R40, R12, R8, R4 R25, R37, R34 R24, R30 R43 R31, R35 R7, R3, R16, R21 R18 R13, R14, R33, R38 R42, R41, R29, R27 R1, R5, R10, R11, R17, R20, R39 R47, R9, R46, R44, R45, R28, R26, R32 R19 C20, C21 C11 C17 C19, C24 C9, C2, C4, C5, C6 C22, C23, C1, C3, C8, C7, C15, C16 C14, C12, C13, C18 C10 Q1 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 LED1, LED5, LED3, LED9, LED7, LED13, LED11, LED17, LED15, LED4, LED2, LED8, LED6, LED12, LED10, LED16, LED14

TL082 Dual Op Amp

TL082

U7

17

LED(s)

31

1N914 Sw. Diode(s)

1

2N3904

1

Tantalum Capacitor

2

Ceramic Capacitor(s)

5

Ceramic Capacitor(s)

1

Ceramic Capacitor

2

Ceramic Capacitor(s)

1

Ceramic Capacitor

1

Ceramic Capacitor

2

Electrolytic Capacitor(s)

1

Potentiometer

8

Resistor 1/4 Watt 5%(s)

7

Resistor 1/4 Watt 5%(s)

4

Resistor 1/4 Watt 5%(s)

4

Resistor 1/4 Watt 5%(s)

1

Resistor 1/4 Watt 5%

4

Resistor 1/4 Watt 5%(s)

2

Resistor 1/4 Watt 5%(s)

1

Resistor 1/4 Watt 5%

2

Resistor 1/4 Watt 5%(s)

3

Resistor 1/4 Watt 5%(s)

1

Resistor 1/4 Watt 5%

4

Resistor 1/4 Watt 5%(s)

1

Resistor 1/4 Watt 5%

4

Resistor 1/4 Watt 5%(s)

1

12 Pole Rotary Switch

1

1P4T Selector Switch

1

DPDT Switch

4

SPST PB Switch(s)

16

SPDT Switch (used to accomodate the gate diode and LED wiring)

16 Step Sequencer Analog Board Information

16 Step Sequencer (With improved PCB) Analog Board Schematic PDF

Either 2.5 Volt Reference chip will work.

16 Step Sequencer (With improved PCB) Panel Wiring Diagram PDF

16 Step Sequencer (With improved PCB) Gate Switch Wiring Detail PDF

16 Step Sequencer (With improved PCB) Board to Panel Wiring Labels PDF

16 Step Sequencer Analog Board Analog Board Parts ListValue CD4067 TL082 TL084 LM336-2.5V VS1 U1 U3 U2 Designators

Qty.

Description

1

CD4067 Analog Mux/DeMux

1

TL082 Dual Op Amp

1

TL084 Quad Op Amp

1

LM336 2.5V Ref.

32

Potentiometer(s) (don't forget to buy knobs) 1M 100K 10K 200K

100K (up to 500K will R11, R19, R32, R38, R46, R54, R63, R69, R4, R8, R18, R35, R44, R53, work fine.) R62, R13, R22, R40, R34, R48, R57, R71, R66, R7, R15, R30, R24, R42, R50, R67, R59, R28 R51 R10, R31, R45, R17, R36, R12, R33, R47, R65, R6, R41, R58, R5, R52, R23, R64, R26, R73 R74, R72, R1 R25

1

Potentiometer

18

Resistor 1/4 Watt 1%(s)

3

Resistor 1/4 Watt 1%(s)

1

Resistor 1/4 Watt 1%

1 2M 47K 0.1uF 470pF 100uF C3, C2 C6, C5 C4, C1 R3, R2 R27, R20, R37, R68, R21, R39, R70, R14, R29, R49, R9, R60, R55, R61, R56, R43

Resistor 1/4 Watt 1%

22 ohms

R75

16

Resistor 1/4 Watt 1%(s)

2

Resistor 1/4 Watt 1%(s)

2

Ceramic Capacitor(s)

2

Ceramic Capacitor(s)

2

Electrolytic Capacitor(s)

Parts Layouts (click image for PDF):

Panel Overlays (click image for PDF):

Miscellaneous

1/16" to 1/10" Thick aluminum plates for mounting the pots and switches. Wood or plastic to build a case with. Assorted hardware 1" 6-32 nuts and bolts, 1/2" #8 wood screws, etc Knobs for potentiometers, wire and solder. Digital Volt Meter and a Signal Tracer or oscilloscope for testing. All Content Copyright Ray Wilson and MFOS 2007/2008