[sdiy] Two new microcontroller projects (echo and MIDI sync)

[Stewart Pye]

Hi Nathan,

Fair enough. I don't want to spoil anyone's fun!

Cheers,
Stew.


Wooster Audio wrote:
> Hi Stew,
>
> Mostly it is just fun.  You can stick your hand between two devices to 
> mute the rest of the chain or shift the rhythm.  You can pull one out 
> of the middle and things keep going.  But you're right, its not 
> entirely reliable.  I don't even know if it would work outside on a 
> bright day due to light pollution from that rather close star.  In the 
> future we might be moving to a modulated 38Khz clock signal which 
> should work far better in those situations.  MIDI-IR is the first 
> device to support that.
>
> Some people have been hooking their devices up with cables.  MIDI-IR 
> has a header with the clock signals on it.  I plan on sticking one in 
> my MFOS sequencer.
>
> I was mostly proposing these here as development boards for people to 
> write their own software, with or without IR.  MIDI-IR has 
> MIDI-in/out, two knobs connected to ADC's, a button, and pwm out.  
> Space Baby has two knobs, a rotary encoder, audio-in/out, in/out 
> filters, and a crossfader.
>
> Nathan
>
> On 6/18/2010 7:39 AM, Stewart Pye wrote:
>> Maybe I'm alone here but to me  the MIDI-IR and  IR Sync seem 
>> redundant. What's wrong with plugging a cable between devices? Going 
>> by the webpage on IR Sync, any cable would be a hell of a lot less 
>> hassle (and timing more reliable) than using the IR Sync protocol.
>>
>> It's not the 1st of April is it?
>>
>>
>> Stew.
>>
>>
>> Wooster Audio wrote:
>>> I have two microcontroller-based projects for sale on my website.  I 
>>> wasn't going to plug them here but they are both related to recent 
>>> threads so why not. I think either board would make a useful 
>>> platform for microcontroller synth experiments.
>>>
>>> The first is Space Baby. It is a digital delay that can be 
>>> beat-synced to an infrared clock. The delay time can be modulated 
>>> with an internal LFO, and the input can be ring modulated with the 
>>> delayed output for distortion effects. The kit uses the Microchip 
>>> dsPIC33FJ64GP802 which is a 16-bit microntroller with DSP features 
>>> (similar to the one Tom Wiltshire mentions in the "small 
>>> microcontroller" thread).
>>>
>>> The second is MIDI-IR. It takes a MIDI clock as an input and 
>>> generates an infrared clock for syncing Space Baby, or other 
>>> Andromeda Space Rocker kits. It can also act as a MIDI clock master. 
>>> MIDI-IR normally outputs a 16th note clock, but has a button and 
>>> knob for outputting other rhythms. MIDI-IR uses the PIC16F88 which 
>>> is a 8-bit microcontroller.  Since it has both MIDI in and MIDI out 
>>> it might not be hard to write some code to turn it into a MIDI 
>>> buffer as described in the recent "MIDI too fast" thread.
>>>
>>> There is a video of both in action on youtube: 
>>> http://www.youtube.com/watch?v=qCax1eCkP8U
>>>
>>> Schematics and other information is available on my website 
>>> http://woosteraudio.com. When you buy either kit I can send you the 
>>> source code if you want to make your own modifications. The tools to 
>>> compile code for either are free on the Microchip website, and a 
>>> PICKit programmer is only $35.
>>>
>>> Nathan
>>> _______________________________________________
>>> Synth-diy mailing list
>>> Synth-diy at dropmix.xs4all.nl
>>> http://dropmix.xs4all.nl/mailman/listinfo/synth-diy
>>>
>>
>
>