[sdiy] wireless patching

[Quincas Moreira]

that's a great idea! I´ll look into RC stores :)

On Fri, May 26, 2017 at 1:43 AM, Roman Sowa <modular at go2.pl> wrote:

> PWM is digital output, so what's your point?
> Using digital words over this radio module would require much higher
> bandwidth, they usually are limited to 100kbps, sometimes much less. Higher
> bandwidth models don't have keying input but take SPI or I2C, packetize it
> and send embeded in some protocol, sometimes with 2-way link. That creates
> latency.
>
> As Matthias just said, this is what RC control uses, TDM-ed multiple PW.
> This is the best solution I think. One visit in RC store and your wireless
> connectivity project finished, just add filters to servo outputs of the
> receiver, as their output is PWM.
>
> Roman
>
> W dniu 2017-05-25 o 22:52, rsdio at audiobanshee.com pisze:
>
> FSK and ASK both assume digital input. If you want to send analog
>> data, then you should be able to use standard FM, which can transmit
>> analog signals. So long as the pilot frequency and the signal
>> frequency survive the transmission, you should be able to reconstruct
>> the analog signal on the receiving end.
>>
>> I do think that multiple CV would require multiple transmit
>> frequencies and multiple receivers, though, to keep the signals
>> distinct. That would be true with ASK/FSK or straight FM.
>>
>> Brian Willoughby Sound Consulting
>>
>>
>> On May 25, 2017, at 2:29 AM, Roman Sowa <modular at go2.pl> wrote:
>>
>>> BT is no good for realtime. How about really simple $2 RF modules
>>> that have FSK or ASK input? Not sure if you can freely modulate
>>> with any PWM signal or is it quantized to some fixed data rate, but
>>> common sense tells me that the simples cheapest module just drive
>>> the radio directly. So you have wireless PWM link, and that's just
>>> one step from CV.
>>>
>>> Roman
>>>
>>> W dniu 2017-05-25 o 01:13, Quincas Moreira pisze:
>>>
>>>> Hey friends! If you were to design a fast and precise wireless
>>>> transmission and reception system for eurorack, how would you doi
>>>> it? Synth 1 > ADC > uP
>>>>
>>>>> Bluetooth > uP > DAC > synth 2 ?  Or is there a simple analog
>>>>> way to
>>>>>
>>>> do it with RF?
>>>>
>>>> I mainly want to send control signals, but as we know, those can
>>>> be up in the audio frequencies or higher!
>>>>
>>>> The idea is to have like, 4 systems set up on 4 corners of a room
>>>> and inter-patch them without stretching long cables all over the
>>>> place. I think 8 sends and 8 receives on each remote patch box
>>>> would suffice, and some system to match sends to receives.
>>>>
>>>
>>>
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-- 
Quincas Moreira
Test Pilot at VBrazil Modular
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