Here is my version of the Buchla Easel Break-Out-Box, this time the box is mounted on the card itself! It’s really a Mega Meta B.O.B.
This mounting is really convenient as everything is right there without reaching for another box.
I went to town on the options because my testing with the card showed that there were a LOT of extra modulation and switching possibilities available, which I really liked.
I should acknowledge that I studied the excellent Break-out-box and card posts by Papz, Rasko, gddfp and others, as well as Todd’s and Adam’s always excellent tips and videos (All on the Muffwiggler Buchla Forum)– Thanks to those guys for inspiring me to do my version.
Here is a full list of the features:
Pulse outs for each Sequencer Stage (with LED) – Banana’s on top and 3.5mm Jacks (mounted on the back)
Sequencer 2-3-4 switch to gain access to 2 step mode
Sequencer No. of steps CV control in (with Attenuator)
Sequencer random No. of steps switch (controllable with the Attenuator)
Sequencer Advance One step button (useful for tuning the steps CV out and having 5 preset voltage sources). Hold down for ‘glitch’ addressing.
Pulse trigger in’s (via banana and 3.5mm jacks) to:
Sequencer,
Envelope Generator,
Pulser
Random CV generator rate
(All Extremely useful for syncing with external gear)
EG:
Attack CV in (with Attenuator) plus Switch to use card random CV source directly
Sustain CV in (with Attenuator) plus Switch to use card random CV source directly
Decay CV in (with Attenuator) plus Switch to use card random CV source directly
Mod Oscillator:
CV in to Wave shape
Switch for Random wave shape
Switch for Random Modulation Mode (FM, AM, none)
Switch for Random Hi/Lo mode – fantastic for creating rubbery random wobbles on baselines
Complex Oscillator:
CV in to Wave shape
Switch for Random Wave shape
CV in to Wave morph (Sine to selected wave shape)
Switch for Random Wave morph
VCA / LPG’s
Switch to Randomise LPG 1 Mode (VCA, Combo, LPG)
Switch to Randomise LPG 2 Mode (VCA, Combo, LPG)
(These patches I have not seen elsewhere but are awesome to use on Sequencer patterns to really add life to them)
Midi Clock-in (with CV controlled Clock divisions and Din Sync Out) - Coming SOON!
And finally, for good measure -and just because I had a bit of space left, I also added a Light Dependent Resister (with Attenuator) for some fun light effected Theremin style action. It works best in lower light but great with an iPhone light waving above it. This is connected to the ‘To Card’ and ‘From Card’ bananas on the 208 front panel (via the card).
Actually because you have ground and power on the card then you can mount anything you want in there (space allowing of course). I thought about adding a simple LFO for additional modulation duties or maybe a filter. You could even use a eurorack module in there if you really wanted to. Later I’ll be mounting one of Tony’s ‘CV Elements’ Tiles inside for convenient Eurorack translation.
The box is from Jaycar electronics (in Aus) and is perfect because the size and screw alignment meant I could screw through the edges of the Easel card itself to hold it tightly in place. I had to cut about 2mm off the end of card to make it fit though!
Jono had the very sensible suggestion of adding rubber feet on the rear to also help secure it vertically. It is a nice tight fit in the slot and the box edges rest on the connector strip so it is quite solid for plugging bananas in and out and using the switches.
This little Beauty adds a LOT of extra functionality to the Easel and really is fun and immediate to play with – especially the switching. All random settings (via the switches) can be used simultaneously and utilise the 2 separate random sources available on the card.
I’m a major fan of using the random CV’s and these mods almost make it feel like you have a 266 Source of Uncertainly built into the BOB. Adding the pulse-in to the random generator allows you to control that randomness (rate of change) from an external source too - or say off any multiple of the Seq stage pulses by patching those in.
With the convenience to switch the random controls in and out it can add a lot of expression to a performance, makes things less ‘mechanical’ and I reckon is kind of in keeping with the Easels philosophy of easy hands on control.
Here is a demo video:
https://youtu.be/0Do67nN6ufI
Adding the Card solder points image below - this will be useful for anybody who wants to experiment with the card or make a similar Break-Out-Box. Its my planning diagram for the Mega Meta B.O.B.
Please note - these are only my suggestions based on the tests I made but please do your own tests and substitute connections and resistor values to suit yourself. Read The Allen Strange Easel manual - the chapter on Meta-Programming has all the answers.
Please note - these are only my suggestions based on the tests I made but please do your own tests and substitute connections and resistor values to suit yourself. Read The Allen Strange Easel manual - the chapter on Meta-Programming has all the answers.
I can see a B.O.B. which is just a full matrix of switches offering all the best instant connections.
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