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by masa-aud
Fri Mar 25, 2016 1:12 am
Forum: Advanced users
Topic: Connect Pi to PC via USB cable possible?
Replies: 20
Views: 13798

Re: Connect Pi to PC via USB cable possible?

Thank you RaspPiUser42 for your reply clarifying the issues. I think first is about communication protocol aspect, that the USB cable with m-m connectors is physically and electrically ok, and networking also ok inside the device drivers of both. but the sessions of both are defined that will restri...
by masa-aud
Fri Mar 25, 2016 12:41 am
Forum: Français
Topic: Raspberry et Kodi: envoi de fichiers flac vers DAC via usb
Replies: 3
Views: 768

Re: Raspberry et Kodi: envoi de fichiers flac vers DAC via u

reply to jppauls on flac-KODI-USBdac-
I think ok if I can then as,
instal codecs such mp3, flac, etc.,
prior to login to KODI or OSMC, select USB audio device with confg or click right on SpeakerIcon on MenuBar.
by masa-aud
Thu Mar 24, 2016 11:22 pm
Forum: Deutsch
Topic: TV on Epiphany Web Browser
Replies: 10
Views: 1782

TV on Epiphany Web Browser

TV on Epiphany Web Browser
I'd like to view DWTV english live on EWB.
Current programs like "Drive It" or "Shift" are successful as on demand, but not as live News.
Could you kindly help this issue for me to know what is in need and to do ?
Danke,
by masa-aud
Thu Mar 24, 2016 11:07 pm
Forum: Deutsch
Topic: Audioausgang abhängig von Dienst
Replies: 3
Views: 1050

Re: Audioausgang abhängig von Dienst

hello nessor
You already try the simple method as a RightClick on the SpeakerIcon on MenuBar,
I am using HDMI or USB PnP Sound Device or Analog listed.
by masa-aud
Wed Mar 23, 2016 1:37 am
Forum: Advanced users
Topic: Connect Pi to PC via USB cable possible?
Replies: 20
Views: 13798

Re: Connect Pi to PC via USB cable possible?

reply to RaspiPiUser42 on Pi-PC connection My understanding is that, We already know that direct USB-USB connection impossible, (Pi)-(USB to Ethernet)- (cross cable or cloud or )-(Ethernet to USB)-(PC) connection possilbe. And you can communicate with your python program activating Raspbian file sys...
by masa-aud
Mon Mar 21, 2016 2:17 am
Forum: Troubleshooting
Topic: Raspberry PI 3 / Only 1 usb port works at a time
Replies: 9
Views: 1403

Re: Raspberry PI 3 / Only 1 usb port works at a time

reply to wismi on only 1 usb
Although I wonder it is a power issue because both KB and Mouse are not power eaters, but yet the contact condition of the micro USB socket might be weak for the total power consumption irrespective of your several power supply units.
by masa-aud
Mon Mar 21, 2016 1:46 am
Forum: Beginners
Topic: Power for multiple PI's
Replies: 9
Views: 1320

Re: Power for multiple PI's

reply to StuckPI on Power for PI's
I think the solution safer than eco'er like smart system is recommended as a set of independent AC power adapter of 5V 2A or 3A for each PI.
Adapters are not expensive ($6) and with low power loss (0.1W).
by masa-aud
Mon Mar 21, 2016 1:08 am
Forum: 日本語
Topic: 起動できない。Waiting for SD card
Replies: 1
Views: 2216

Re: 起動できない。Waiting for SD card

reply to horisuke on waiting SD
推測としてSDが認識されていない、マイクロSDでソケットに装着時の接触不良を良く経験します。
Shiftキー単独ではキーボードの一般的な仕様では何も本体へ信号を送出しないでしょう。 Holdは押すではないから、Shiftは別の意味でしょうね。
書き直しをした以外に何を試みたかですが、NOOBSの説明にあるように、再フォーマットの要注意事項も試す必要ありと思います。To Do 事項がまだたくさんあるようです。混乱の際はインストールの始めからしていくのが早道かなと思います。
by masa-aud
Sat Mar 19, 2016 12:10 pm
Forum: Advanced users
Topic: store logs on usb flash drive for 24/7 operation
Replies: 8
Views: 2408

Re: store logs on usb flash drive for 24/7 operation

reply to wewa on 24/7 log onto flash I am optimistic such that the flash memory will work more than 1000 years. In case that 1kB of logged data in every second requires only 86.4MB of memory a day, that is 31.536GB a year just by writing data on same as to the recorded tape. After you read the logge...
by masa-aud
Sat Mar 19, 2016 7:42 am
Forum: Advanced users
Topic: Connect Pi to PC via USB cable possible?
Replies: 20
Views: 13798

Re: Connect Pi to PC via USB cable possible?

reply to RasPiUser42 on two hosts on USB
I think it is not a normal connection referring the spec that USB net consists of only one host can pol several devices.
by masa-aud
Tue Mar 15, 2016 10:13 pm
Forum: HATs and other add-ons
Topic: I need a software controlled power plug
Replies: 5
Views: 1382

Re: I need a software controlled power plug

reply to jarif on software controlled power
I think it's a sticky issue on network in general because nodes behave independently and one among them could not control other's condition such as power on and off from outside also via USB. Is it making sense ?
by masa-aud
Tue Mar 15, 2016 9:59 pm
Forum: 日本語
Topic: 初心者向け資料
Replies: 11
Views: 12790

Re: 初心者向け資料

reply to tominaga on fresher
とても良い案内書と思います、ある考えでまとめてあることが分かりやすさの基になり、それで良いのだと思います。web上には断片的なレポート類がちらばり、それらは貴重としても入門者には当面必須か判らず混乱するものです。なお、内容個々には違う意見が出ますが、参考にする側からは別の傾向の案内書が出れば理解が深まり、偏りも解消していくと思います。
今はもう二年も経ち、これから始める人が手にする基板もOSも変ってきているので、改訂版に期待しています。
by masa-aud
Tue Mar 15, 2016 1:19 pm
Forum: Beginners
Topic: 3.5mm jack plugs
Replies: 4
Views: 675

Re: 3.5mm jack plugs

reply to frankfranklyfrank on 3.5mm jack plug for 5V I think basically the 3.5mm phone plug type system has a neck problem that is, when the plug is going into the jack the plug's poles are instantly connecting to wrong poles of the jack one by one. So such physical design of the phone jack will cau...
by masa-aud
Tue Mar 15, 2016 12:57 pm
Forum: Beginners
Topic: In-wall power supply for permanent installation
Replies: 4
Views: 1887

Re: In-wall power supply for permanent installation

reply to ItsTimaiFool on in-wall power supply to RPi
I think you are doing a very useful request on smart home power system introducing hierarchical DC net. Currently in my case I am using a 5V-3A output AC 80-240V power adapter with a DC plug to RPi's micro USB jack.
by masa-aud
Tue Mar 15, 2016 3:15 am
Forum: 日本語
Topic: 録音できません!大変困っています。
Replies: 6
Views: 4470

Re: 録音できません!大変困っています。

reply to Raspbian8 on sound rec すでに解決と思いますが、他の方への参考に確認しますと、 LinuxがOSとしてUSBの入力デバイスを認識したことの表示、 録音プログラムがそのデバイスを認識し、更にそれを選択したことの表示、 録音動作がされているかを録音時間を指定してプログラムを作動させ、 その動きを観察するなどし、またファイルが生成したかなどを調べ、 同じく、 LinuxがOSとしてUSBなどの出力デバイスを認識したことの表示、 再生プログラムが出力デバイスを認識し、更にそれを選択したことの表示、 以上がひとつずつ合っていることを確認する、 なお、カメラ、マイク...
by masa-aud
Mon Mar 14, 2016 11:00 pm
Forum: 日本語
Topic: RPi B+でどんなHDMI-VGA変換ケーブルやアダプタが使えますか?
Replies: 13
Views: 4186

Re: RPi B+でどんなHDMI-VGA変換ケーブルやアダプタが使えますか?

reply to akita_500 on B+HDMI-to-VGA continued Rpi の AV複合ジャックを利用する際の注意点として、市販の 3.5mm 4極 ジャック は異なる接続の仕様が多くあり、 Troubleshootingの中にも例示があります。なお、ヘッドホンやステレオアンプでオーディオのみ利用する場合、ノイズが多いとの声が多く見られますが、私の試した範囲でも、ビデオ信号が混入してしまう可能性があります。3極のステレオオーディオプラグをRpiの4極ジャックに挿すと、接触抵抗の具合によってビデオ端子の信号が混じり込んでくることになります。 これを避けるには、Rpiジャッ...
by masa-aud
Mon Mar 14, 2016 6:37 pm
Forum: Advanced users
Topic: Analogue audio testing
Replies: 265
Views: 134094

Re: Analogue audio testing

reply to db on clipping to 0..127
It is right algorithm in line with the delta modulation scheme you think, I agree with.
by masa-aud
Sun Mar 13, 2016 9:50 am
Forum: Troubleshooting
Topic: MP3 Playback - HIGH PITCH NOISE
Replies: 3
Views: 748

Re: MP3 Playback - HIGH PITCH NOISE

reply to Horendus continued So I am using a 4-pole plug into the 4-pole Rpi jack and 3-pole audio jack for HP plug and connect Lch and Rch in between. That is, when you plug your HP plug or analog audio plug directly into 4-pole Rpi jack, then you can get stereo audio signal but might receive audio ...
by masa-aud
Sun Mar 13, 2016 9:27 am
Forum: Troubleshooting
Topic: MP3 Playback - HIGH PITCH NOISE
Replies: 3
Views: 748

Re: MP3 Playback - HIGH PITCH NOISE

reply to Horendus on noise from 3.5mm jack Please check whether the connections of Lch, Rch and Video between your audio plug and Rpi jack are in exact fittings, because there are several different pole settings but all the same appearances of plugs. And also we often experience trouble of connectio...
by masa-aud
Sat Mar 12, 2016 7:42 pm
Forum: Advanced users
Topic: Analogue audio testing
Replies: 265
Views: 134094

Re: Analogue audio testing

reply to jdb on improving audio decoder I think that strongly welcome the audio quality of RPi is improved at least to 16bit PCM at 44kHz of CD audio rather than 11bit pseudo PCM at 48kHz by PWM which I know here. Your showing method of 7bit 16x sampling sounds good greater than previous 11bit pseud...
by masa-aud
Sat Mar 12, 2016 11:47 am
Forum: Beginners
Topic: 4-pole 3.5mm audio & v out
Replies: 9
Views: 3649

Re: 4-pole 3.5mm audio & v out

reply to DougieLawson on L-R-G-V connection of 3.5mm jack

Yes you show a smart method of analyzing such audio issue.
by masa-aud
Sat Mar 12, 2016 11:13 am
Forum: Beginners
Topic: 4-pole 3.5mm audio & v out
Replies: 9
Views: 3649

Re: 4-pole 3.5mm audio & v out

reply to drgeoff on 3.5mm jack connection I think that you are right and if so I also welcome such connection as Lch > Rch > Gnd > Video because it is better from compatibility point. There seem to be many forum members in trouble with poor audio from 3.5mm jack of R-Pi but people seem not to be abl...
by masa-aud
Sat Mar 12, 2016 5:54 am
Forum: Troubleshooting
Topic: Headphone sound output not working.
Replies: 16
Views: 45841

Re: Headphone sound output not working.

by masa-aud » Thu Mar 10, 2016 1:42 pm Dear All FYI on 3.5mm 4-pole jack There are several specs for audio-in and out and video. From the top to -- Lch > Rch > Mic > Gnd (OMTP) Lch > Rch > Gnd > Mic (CTIA) Lch > Video > Gnd > Rch (R-Pi-B,B+,2,3) Posts: 27 Joined: Fri Feb 26, 2016 9:20 am In case of ...
by masa-aud
Sat Mar 12, 2016 2:50 am
Forum: Advanced users
Topic: logging 8 temperatures
Replies: 6
Views: 1157

Re: logging 8 temperatures

reply to tangent.gardner on logging 8 high degree temperatures The method of sensing high temperature will be k-bi-metal with ceramic sleeve for leadout as you think but in somewhat with laboratory equipment. The data acquisition will well be done by such converting device as a 10bit 8ch with SPI in...
by masa-aud
Fri Mar 11, 2016 11:33 pm
Forum: Beginners
Topic: 4-pole 3.5mm audio & v out
Replies: 9
Views: 3649

Re: 4-pole 3.5mm audio & v out

reply to billdbecker on audio from 3.5mm R-Pi jack Good sound only from suitable connection via converting 4-pole to 3-pole cable but expensive as $40. You will find alternately such connecting 3.5mm HP jack to red-white RCA jack and red and white of red-white-yellow RCA plug to 3.5mm 4-pole plug in...

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