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Simple Sequencer

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One of the keys to making good music is mindless repetition. That is what the simple sequencer is great at. It does the same thing over and over again in an eight note sequence. You can adjust the frequency of the note, the duration of the note and the pause between notes. If you get really good, you can anticipate the next note and change things up on the fly. This little box is sure to provide endless hours of fun.


 
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Step 1: Go get stuff

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You will need:

- (8) 1M potentiometers
- (8) 50K potentiometers
- (8) 10K potentiometers
- (8) SPST 5V relays
- (1) 20K potentiometers
- (16) .1uF capacitors
- (16) 220 ohm resistor
- 74HC595 Shift Register
- Lamp pull switch
- M-type power adapter
- Mono audio jack
- 10K resistor
- 16F877 Pic chip
- 20 MHZ resonator
- PCB or two
- 40 pin socket
- Mat board
- 12 x 12 sheet of acrylic
- Wood grain contact paper
- 5 x 7 aluminum box
- An analog variable resistance based noise maker
- Rubber feet
- 26 knobs of various color
- A power drill
- C-clamps
- An awesome Epilog laser cutter
- A soldering setup
- Misc tools and hardware

Step 2: Cut the top panel

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Stick your wood grain contact paper onto a sheet of acrylic. Lay it contact paper down inside the laser cutter.

Cut the acrylic with the following file and raster cut it with the following settings:
Passes: 5
Power: 100
Speed: 100
DPI: 600

After you are done raster cutting, vector cut using the following settings:

Power: 100
Speed: 10
Frequency: 5000

Step 3: Cut some spacers

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Cut out some mat board spacers on the laser cutter using the file below.

The setting I used for the vector cut were:

Speed: 100
Power: 40
Frequency: 2500

Step 4: Wire the pots

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Attach wires to the left leg and the center leg of the 1M, 50K and 10K potentiometers.

Step 5: Assemble the top panel

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Now is time to assemble the top panel.

For each potentiometer, slide on a mat spacer and then install it through the back such that the notch on the potentiometer is aligned with the indent in the back of the acrylic.

In what you figured will be the top row, insert the 1M potentiometers.

In the middle row insert the 50K pots.

In the bottom row insert the 10K.
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is it expensive because im doing some djn with my game boy and ive blown so much cash on the parts but it sounds like such a great idea

evanmalmud4 years ago
could you post the dimensions of the box please
Yes, Please post the measurements so I don't have to buy a laser cutter.
stealthop2 years ago
i'd rather have a mini moog than a laser cutter. call me crazy!
stealthop2 years ago
what pic programmer is that?
dlapham2 years ago
Can't I just use some plastic washers from Lowes?
dlapham2 years ago
Can't I just cut it with a hole saw on a regular drill?
randofo (author)  dlapham2 years ago
Sure. A normal acrylic drill bit should do.
antoon2 years ago
how much does it cost i am almost broke so ...
Would it be too much trouble to ask for a little higher resolution picture of the schematic? Thanks!
randofo (author)  Rank Penguin2 years ago
In a few weeks I will be posting a new project with a much better circuit for doing the sequencing based on a 4017 decade counter.
randofo (author)  Rank Penguin2 years ago
Click on the "i" in the top left corner of the image for higher res versions.
apaterson13 years ago
i have no programing experience do u know where i can find a pre-programmed chip? thanks
You can use a 4017...
randofo (author)  apaterson13 years ago
No one sells pre-programmed chips that I know of.
hintss randofo2 years ago
sell them
pieman4452 years ago
AWWWESSSOME! I love sequencers, and with the looks of this one, i may have to see if i could make it XD
How much, excluding the cost of a laser (i may mount in something else), would you say this costs to make?
jordanwade3 years ago
what program did you use to code the chip?? i only have mplab and the arduino ones...
pietzeekoe3 years ago
MAKE A KIT!!!!!cant find the parts ...
xemiahx3 years ago
that is simple? lol
kasta963 years ago
what type of laser cutter do you bought?

the zing one?
randofo (author)  kasta963 years ago
I didn't buy any, but I am fortunate to be able use an Epilog Legend EXT. I have now used 3 different kinds of lasers and must say that I like Epilog the best.
kasta96 randofo3 years ago
so it's possible to build this project whitout the laser cutter?
randofo (author)  kasta963 years ago
I more or less used the laser cutter to cut round holes. This can easily be done with a drill press. Just download and print the file and use this as a drilling guide.

The spacers I made could easily be bought.

I think that about covers everything.
dark sponge3 years ago
A picture may be worth a thousand words, but a video is worth a thousand pictures.
More than that. 30 pics a second. so 1 minute of video is 1800 pics right there. and 1440 pics at 24 FPS.

Sorry 'bout that...
This could be fun for Progressive House tracks! Perhaps get a few modulators in there, double the amount of notes...am I getting ahead of myself?
JaNsRex3 years ago
Hello guys...just to ask.....does this circuit has a tempo or just a beat?...such as a closed hat sound....
pietzeekoe3 years ago
I wish you made a kit for this.....I love the idea but i dont like part hunting and programming.

You should make kits with just the parts and a pre-programmed chip.....I would buy one :)
hazzalflame5 years ago
Hey... Just want to know how much your exact one cost and how much we could save on alternatives. some of these components ain't cheap!! Recession and all...
randofo (author)  hazzalflame5 years ago
Toy keyboard (free on sidewalk) Potentiometers and knobs (probably around $25 including shipping) PIC chip setup ($10) Misc other parts ($10 - $15)
how did you get the potentiometers so cheap? as well as the other parts. What website do you use? i have had trouble finding potentiometers for under $10 each
http://www.futurlec.com/index.shtml has great prices, or try local bargain bin electronic stores, and i actually have found pretty good deals for 10-15 at a time on ebay, for as cheap as $1 apiece, w/ $3-4 shipping from hongkong, etc
armenws amplex3 years ago
2nded - ebay is a great place to find them around 1$ or less each, just make sure you find the ones with the right rating and stem length you need and sort by price

copenhague3 years ago
I'm looking for a step sequencer but the monye is a problem..

is this Simple Sequencer for real or just a joke?

where can I listen to the sound of it?

thanks
Why don't you try the baby-10 step sequencer? Google it...
randofo (author)  copenhague3 years ago
I found a toy keyboard on the sidewalk and hacked it. I doubt you will find the same toy keyboard on the sidewalk. What mine sounds like probably won't be exactly what your sounds like.

Basically, it hits different notes in sequence, as expected. You can use whatever sound-producing device you want.

I have better things to do than write fake how-to instructions.

If you want a cheap and simple one, here:
http://electro-music.com/forum/topic-37770.html
amplex5 years ago
not to steal your thunder, OP, but for those interested in a MUCH much simpler (and also usable as a CV sequencer!) do a google search on Baby10 sequencer. No PIC required, just a simple 4017 (for 10 steps) or 4022 (for 8 steps), the 8 100k pots, 8 1n4148 diodes, and some leds and resistors if youd like. i can build these in an hour, and have put them in toy drums, synths, etc!
teeps amplex4 years ago
 Would you please make an instructable for this?  I would love to see it.  I am interested in all of this stuff!
amplex teeps4 years ago
I've had parts around to do a 16 step one for awhile, a very simple project with 3 chips (40106 timer, 2x 4022 or 4017), 16 diodes, 18 pots, leds+resistors.  It will have CV out with a pot to control the range, and 1 for gain (internal osc). I'll start working on it tonight.  The only thing I've never done is make a drawn schematic for it but its based on the common Baby10 schematic which you can search for.
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