...they are available again,
https://www.amazon.co.uk/gp/product/B01HBC8CJ0/ however that's in UK, i
didn't find them in amazon.de so far. However i'm waiting for the device
with 6 inputs anyway :-)
73, Stefan
PS: Jim, i don't think the module will have problems with the RPi3, it's
just a question of power consumption for a portable or solar supplied
system. My tree grabber is running on a RPi2B, i need to take care
saving each mA, otherwise the availability will decrease, especially in
December! An on-board WLAN may be comfortable for your application,
crossing a distance of up to 10m. But for my tree, i need a WLAN stick
with an SMA jack to connect a yagi. The distance is 3.5 km...
Am 16.02.2017 00:45, schrieb [email protected]:
Paul,
Thanks for posting your findings on this topic.
Plenty of the Audio Injector boards on local Amazon so I bought four in hopes
that your tests would prove favorable. Thanks for the favorable results!
I haven’t worked with a Raspberry Pi before but have a new CanaKit RPi 3 and
though I would use it with the Audio Injector module. Then I saw your message
indicating disinclination toward RPi 3 power dissipation (from unused built-in
Bluetooth and WiFi). I had guessed that the RPi would be used to enable a wireless
connection between antenna and laptop/PC, which raises a question (if you have a
moment): for a backyard-antenna-to-indoor-laptop application or for a portable
field-test application, what type of interface would be used between an outdoor RPi 2
and an indoor laptop or portable-field-test laptop? (or am I on the wrong track;
should I be thinking of Audio Injector plus RPi 2as an unattended datalogger rather
than a real-time interface between VLF loop and laptop?)
Thanks,
Jim AA5BW
-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Paul Nicholson
Sent: Wednesday, February 15, 2017 5:02 PM
To: [email protected]
Subject: Re: LF: Raspberry Pi sound interface that works
Another update to EbSynth, now at version 0.7a
http://abelian.org/ebnaut/ebsynth.shtml
Now compensates properly for changing delay of the output buffer as the sample
rate wanders. A temperature change that previously produced a 30 degree output
change now only affects the phase by about 0.3 degrees. The residual is a 2nd
order effect proportional to the rate of change of sample rate.
I've noticed a couple of sound card input overruns on the RPi when the CPUs are
very busy. 0.7a assigns itself a real-time scheduling policy at high priority.
It remains to be seen if that fixes the overruns.
--
Paul Nicholson
--
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