Custom Order: Bar Set, Cardboard Keyboard and Cardboard Amp / Part Two...

This is the second post concerning the bar set order, we decided to throw in some little extras, a cardboard keyboard and a cardboard amp.

The keyboard is a simple enough affair as it is based on a simple circuit that involves a 555 timer chip to produce a square wave. The casing was created by laminating lots of layers of cardboard together using glue and wood screws. In the video below we are playing the keyboard into the ring modulator of one of our earlier instruments, Fotosis No. 003. The resulting sound is the effect of the square wave noise section from Fotosis No.003 being fed into the carrier input of the units ring mod. and keyboard on the main input.



The amplifier is actually three amps and three speakers in one box. The amps are LM386 chips providing 2.5 Watts each. This set up allows us to play three separate devices into the amp where each device will have its own input, volume control, amp and speaker.

Part one of this post can be viewed here.

- J

Custom Order: Fotosis No. 006, Bar Set, Optical Sequencer, Egg Beater Theremin / Part One...

Connie here. We've been working on a custom order set the last 4 weeks for someone I am very close to. If anything, I wouldn't think anyone else would be capable of supporting 'fotosis' like he has with this one project. In the infancy of our little 'business', it's the friends and loved ones who help us get through the days of uncertainty; the ones who understand our simple dream and allow us to feel that for everything we make, they truly want to be a part of our growing passion and humble expertise. (FYI - I thank all our friends at the end of our blog and also through regular posts)

This set will be showcased in a local popular bar downtown that is known for weekly live music. The requirements were in keeping with our love for recycled materials and parts, as the need for the instruments to be durable to withstand euphoric drunken customers and also the respect of a handmade retro aesthetic including Meccano pieces & salvaged vintage connectors.

We really enjoyed designing and creating this interactive ensemble, something that anyone passing by would want to touch (very important) and an experienced musician could properly plug and play with.


Here is John with the specs;

The optical sequencer contains two oscillators one generating a sine wave the other a square wave. These oscillators are set up as optical theremins, their frequency being determined by three LDR's mounted on the front or the unit.

There are also a number of patch leads, permanently connected at one end to the outputs of a micro-controller. These leads can be connected to banana jacks on the front panel allowing the micro-controller to send trigger pulses to opto-couplers that reroute the frequency determining components connected to the oscillators. The time between trigger pulses is set by a value read from another five LDR's that are connected to the analog inputs of the micro-controller.



Both sound producing sections of the unit are then fed into and mixed by a passive ring modulator before amplification. The resulting noise is a random series of beeps blips and noise that you can interact with by applying lights or shadows to the eight LDR's on the control panel.

The sound producing chips I used for this build were the XR2206 (Sine Wave) and a 40106 (Square Wave).

As this unit is for public use it was important to make the controls as simple as possible so the pots are all dual pots. Example the volume also controls intensity and the filter is also square wave frequency.

The matching theremin with the Egg Beater for an aerial is a solid state unit based on a modified schematic we found online a while back.

All of the materials used to manufacture the casings were found objects like Meccano, random collected screws, bits of metal and wood also a strange French industrial on/off switch.

The whole setup runs off a single boss PSA 230, 9v DC supply.

Part two of this post can be viewed here.

Interview Max Farnea / Creator of The Sound Destruction Unit

I've been admiring Max's work since (again, I know I am obsessed with them!) CDM posted about this incredible modular synth from their flickr pool back in August. Here is the "The Sound Destruction Unit" if you haven't seen it in action.



I have just conducted an interview with not only Max the creator, but also Audrey his wife and fellow artist. These two co-exist with music making, circuit bending, robots, recycled art, dancing, photography and japan. Amazing. It's an interesting and long read, it's in full over on my mog.

Here's more,

"MAX: since I was younger, in the early 80s, electronic music, video games and home computing were my first interests and I lived electronics and computer technology always with a creative point of view. I went deeper in my hobbies studying for some years electronic engineering and taking piano lessons for seven years. Thanks to my studies in electronics I went addicted to robotics and I built a mini-robot for a couple of national competitions."

"AUDREY : my interest in making art with recycled stuff has started when I was watching Max making his electronic experiments and all the junk or surplus material he left on the table. Since now I like finding shapes like faces or body parts in every plastic or metallic piece I take in my hands. After I find such shapes, assembling them is really a natural process. It’s funny when you image me into skip diving in Verona, really funny indeed, but it’s incredible how many unused things can be found simply at home. One of the most beautiful aspect of this kind of art is giving a second life to things...Watching max working on his instruments I’ve found a lot of ideas to make my robots more alive and interactive with little lights and circuits."

"MAX : More than half of my retro and vintage stuff was mine when I was child or teenager. Other hardware comes from friends or eBay bids. The line in balancing the old and new when I’m making a new instrument is always different and is traced putting the old stuff in a modern context, and if needed ignoring also the original rules on which it was based on."

I am really impressed with these two. Everything they make is done in their spare time, and not for profit (though they are both planning to sell work in the future). I wish them the best and hope that they find more avenues to show off their talent.

For more about Max and Audrey. My mog interview.

- C

For Sale: Fotosis No.003

Good news everyone! We have been very busy the last few weeks working on commissioned work and as a result haven't posted anything on our Etsy shop in a few weeks, until now:-)

This instrument which we have labeled Fotosis No.003 was designed and built by Connie it was the first unit she has designed and built alone and I love it.

It is currently for sale on our Etsy shop.

In terms of functions it is identical to Fotosis No.002 only the housing and layout of the controls is different.

We are selling it for 300 US Dollars which the same price that we sold No.002 but translates into a bit less for us when you convert it into Euro. But due to the fact that we have upgraded our basic design recently and all future units will have extra features and different construction our next models will be priced a bit higher.

Fotosis No.003 is a three in one device. It contains a simple optically controlled synth, a separate noise maker circuit and a passive ring modulator all in one box. There are ten pots, two LDR's, seven toggle switches and two momentary switches all of which control the active circuits and allow you to turn on and off various effects or sections and bypass parts of the device.

This instrument is housed in a thin sided wooden box also purpose built. Most of the wiring is point to point (in a vintage style) to reduce solder board complexity. The instrument is coated in an orange tolex like material and has steel corners and aluminum trimming around the control panel, there is also a leather carry handle on the front.

The sounds produces vary from weird drones to little sequences of chirps, bleeps and beeps and also full on noise.

There are three sections, two oscillators and a ring modulator each oscillator can be used on its own or can be mixed using the ring modulator.

It can be used as an instrument on its own or as an effect that can modulate the sound of other line level devices that are fed into the input of the ring mod.

There is a video of the instrument in action at...





It measures 36 cm long by 22.5 cm wide, the control panel is sloped and is 10 cm at its highest point Fotosis No.003 weighs about 900g.

Features:

Firstly there is a passive ring modulator comprised of three jacks, input, suppressed carrier frequency input and output. There is also a bypass toggle that switches the input straight to the output. But as with most passive ring modulators the inputs and outputs are interchangeable.

Optically controlled LFO producing a pure sine wave, with frequency switching function, low and high pitch switch and a toggle that switches off the optical function allows you to control the oscillator using two pots for when you want very slow non audible sine waves used mainly with the ring modulator as the carrier signal. Just above the main controls there is a volume knob. You can interact with this sections using the two LDR's mounted on the face of the control panel using you hands or other light sources, our favorite is to use flashing bike lights, strobes or torches for weird whining tones and intense beeps.

Next is a strange square wave noise generator that consists of two oscillators interacting with one another. Screaming high pitched tones can be produced as can low fuzz like sounds when the pots are at their max or min positions, in between you find effects similar to a simple two tone sequencer changing relative to one of the pots. There is also a low pass filter and volume control.

We have been playing around with it for a while now and have still have not discovered all the possible sounds you can create. It would be perfect for anyone into Circuit Bending, dronescape music, performance art, noise art installations, DJ's or just musicians who want a device on the side that they can use as a noise wig out machine. It is capable of plenty more subtle sci-fi effects and also when effect units like delay, phase, fuzz or pitch modulating pedals are connected between the device and an amplifier the number of potential sounds you can produce grows.

None of the controls are labeled because they are often quite difficult to describe, but we will be suppling a drawing of the control panel with descriptions relating to the function of each knob and switch to get you started.

Here is a basic run down of the controls:

Oscillator 1 Top of control panel:

High / low pitch toggle switch.
LDR switching on / off.
LDR / potentiometer select.
Kill switch.
Momentary bypass kill switch.
Volume knob.
Sine wave intensity knob.

Oscillator 2 Bottom of control panel:

High / low pitch toggle switch.
Low pass filter setting knob.
Volume knob.
Square wave 1 frequency knob.
Square wave 2 pulse speed knob.
Square wave 1 Square wave 2 mix knob.
Kill switch.
Momentary bypass kill switch.
Oscillator 1 LDR's.

Centre of control panel:

Ring mod. bypass toggle.
Oscillator 1 momentary bypass of kill switch.
Oscillator 2 momentary bypass of kill switch.
Oscillator 1 LDR's.
Power indicator LED.

Rear of unit:

Oscillator 1 1/4" output mono.
Oscillator 2 1/4" output mono.
Ring mod. input 1/4" mono.
Ring mod. carrier input 1/4" mono.
Ring mod. output 1/4" mono.
Power on toggle.
9v dc jack.

Brilliant Arduino Sequencer

Spotted this fantastic Arduino based synthesizer / sequencer on the make blog this morning. The official website for this project can be found here. The links include video of the device in action is well as code and schematics in case you wanted to build your own APC (Arduino Punk Console) not to be confused with the 555 Timer based Atari Punk Console (APC) which is an entirely different but totally fun weekend noisemaker project. Be sure to check out the rest of their website Beavis Audio as they have lots of other cool audio devices and effects.

I have spent hours playing around with the Arduino board since I purchased one almost a year ago today. Our first instrument an optical theremin we called Fotosis No. 001 used one to control various effects. The possibilities this simple USB cross platform micro-controller presents are almost limitless (Well not really limitless) and I love to see what lots of people around the world is doing with this great tool. I also like the fact that this device is getting the attention it deserves from websites like Make so more people can be turned on to its potential.

-J

Handmade Electric Guitar

Just finished building and setting up this electric guitar. The body is a solid block of Indian Teak which was once part of a DIY boat project that was abandoned in the 60's, the wood had been sitting in a shed in Ireland until my dad rescued it and I then took it to my workshop in France. We found the sheet of aluminum that is the rear cover outside our flat late one night on the way home from the brasserie. The neck was an Ebay find, all the other little bit and pieces were scavenged from here and there.

The really interesting thing about this project is that I made the pickups from scratch. The bobbins were hand carved from the same wood as the body and wound with the same type of wire originally used by Fender. Each of the two scatter wound single coil pickups have six high quality AlNiCo magnets in them and the wire was wound to 5.5k on the bridge pickup and 6.7k on the neck pickup resulting in a very warm and powerful vintage sound that distorts extremely cleanly.

I really enjoyed making this instrument and will be very sad to see it go.



You can see a slide show of the instrument at various stages of construction if you follow this link.

This instrument is going up for sale tomorrow evening (my time France) on Ebay, if anyone is interested in buying it before then, contact me.

-J

Making Your Own Cardboard Synthesizer / Using Recycled Materials

We've had quite alot of interest in our simple saw theremin! That makes me very happy because it is so simple and anyone can do it.

We often think of things to create for fun and it makes use of things lying around the flat which is another philosophy (for lack of a better word) we live by.

Another similar project is the ‘Your First Synth’ shown here via Music From Outer Space that John found for me in March. This is the perfect weekend project and not very expensive to make. Below is what I've written about previously on my other blogs.

"A wonderful little project that John and I did while both sick. It took us only a few evenings, a couple bottles of wine and lots of eye squinting soldering.

The total price is only (approx.) 30 Euros to make. We used recycled cardboard for the case, a makeup compact mirror, paint, glue and leftover foam to mount the proto board securely. The case is secured by Velcro strips in case I want anything changed or want to re-use any parts."

We then had to test for sound. For such a simple build, it sounded pretty good.


"The sound is fantastic and very solid, versatile. Once we hooked up some of John’s other pedals and micro synthesizer, we could make really intense and varied beats and rhythms."

We fortified the panel with a spray vinyl normally used for acrylic and oil paints, this seems to work fine with wood surfaces too. This finish is semi-glossy , whereas you have matte, glossy and grainy textures you can add. This all can be found in any art store.

"Added a final paint job under the mirror with some collage and scratches to finish the synth. John added an LED light for the power on/off for me and fixed the left side switches because they were placed in reverse." I also found a very tasteful nude which I embedded on the front panel, using the compact mirror to obscure the naked bits. ;-)

I think cardboard is a wonderful material to work with and still want to make another more complicated version in cardboard casing. It's cheap, versatile and easy to store or transport. We're big fans of cardboard furniture or anything using recycled materials. Here are some additional photos of design projects using recycled materials, that I took at a design biennale, so you can see for yourself.

Related Links:
'Your First Synth' via Music From Outer Space
More Photos of Our Cardboard Synth
Our Simple Saw Theremin
Building With Cardboard via BuzzFeed

-C

Video: DIY Instruments Japanese Style

We have no idea if this is for real...but it's totally cool. The longer you watch, the better it gets.

- J&C



UPDATE: Looks like Audio Lemon has the scoop on these two, great! - C