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4 results tagged power  ✕
Perte de connection radio de mon RFLINK merci udev https://wiki.debian.org/fr/udev
Thu Feb 15 23:03:28 2018 archive.org
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Bonjour,

J'ai installé mon serveur en débian9, celui-ci utilise domoticz et un rflink pour gérer ma domotique...

depuis l'installation j'avais des pertes d'informations...
j'ai d'abord pensé aux piles de mes sondes.... mais non...
c'était le serveur

et oui après un certains temps le port USB est mis en "basse consommation" par linux et donc moins de puissances pour la réception / envoi d'information.

donc j'ai ajouté une rêgle dans UDEV:

  • filtrage sur le vendor et le product id
  • ajout d'un lien "rflink" dans /dev
  • passage de la gestion de la consommation de ce device à "on" pour la désactiver

SUBSYSTEM=="usb", ATTR{idProduct}=="7523", ATTR{idVendor}=="1a86", SYMLINK+="rflink", TEST=="power/control" ATTR{power/control}="on"

udev linux power usb rflink
Power Management for USB — The Linux Kernel documentation https://www.kernel.org/doc/html/v4.13/driver-api/usb/power-management.html
Thu Feb 15 18:19:47 2018 archive.org
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The user interface for dynamic PM

The user interface for controlling dynamic PM is located in the power/ subdirectory of each USB device’s sysfs directory, that is, in /sys/bus/usb/devices/.../power/ where ”...” is the device’s ID. The relevant attribute files are: wakeup, control, and autosuspend_delay_ms. (There may also be a file named level; this file was deprecated as of the 2.6.35 kernel and replaced by the control file. In 2.6.38 the autosuspend file will be deprecated and replaced by the autosuspend_delay_ms file. The only difference is that the newer file expresses the delay in milliseconds whereas the older file uses seconds. Confusingly, both files are present in 2.6.37 but only autosuspend works.)

power/wakeup

    This file is empty if the device does not support remote wakeup. Otherwise the file contains either the word enabled or the word disabled, and you can write those words to the file. The setting determines whether or not remote wakeup will be enabled when the device is next suspended. (If the setting is changed while the device is suspended, the change won’t take effect until the following suspend.)

power/control

    This file contains one of two words: on or auto. You can write those words to the file to change the device’s setting.

        on means that the device should be resumed and autosuspend is not allowed. (Of course, system suspends are still allowed.)
        auto is the normal state in which the kernel is allowed to autosuspend and autoresume the device.

    (In kernels up to 2.6.32, you could also specify suspend, meaning that the device should remain suspended and autoresume was not allowed. This setting is no longer supported.)

power/autosuspend_delay_ms

    This file contains an integer value, which is the number of milliseconds the device should remain idle before the kernel will autosuspend it (the idle-delay time). The default is 2000. 0 means to autosuspend as soon as the device becomes idle, and negative values mean never to autosuspend. You can write a number to the file to change the autosuspend idle-delay time.
usb linux power
Feeding power to Arduino: the ultimate guide | Open Electronics https://www.open-electronics.org/the-power-of-arduino-this-unknown/
Tue Oct 10 23:37:45 2017 archive.org
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JAPAN JACK socket: an external source (a power supply, usually) must be connected to this socket, with the positive pole going to the central part of the jack, and the value must be ranging between 6 V and 20 V, even though the range recommended by the manufacturer is 7÷12 V, thus it is not advisable to use voltages that are lower than 7 V or greater than 12 V, if not in the case of a real need; 6 V may not guarantee a proper stabilization on the part of the regulator, it is in fact needed to consider the voltage fall of the protection diode, placed in series at the regulator’s input (whose purpose is to preserve the board from destruction in the case of polarity inversion on the jack); while values above 12 V would create an excessively high drop-out (an electric potential difference between the regulator’s input and output) that would cause a pointless overheating of the regulator, even with low levels of current draw.

– 12 V Power Supply: I = 2 / (12-5) = 2 / 7 = 285mA
– 9V Power Supply: I = 2 / (9-5) = 2/4 = 500mA
– 7 V Power Supply: I = 2 / (7-5) = 2/2 = 1A

arduino power source
How to JailBreak PS3 with Blackcat USB - PS3 NEWS - PlayStation 3 News - PS3 Forums http://www.ps3news.com/forums/ps3-guides-tutorials/how-jailbreak-ps3-blackcat-usb-112311.html
Thu Oct 20 07:09:07 2011 archive.org
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How to JailBreak PS3 with Blackcat USB Requirements: PS3 (on fw 3.41) Blackcat USB Flip Software (i used 3.3.1) Psgroove Teensy 1.0 Hex file w/

How JailBreak PS3 with Blackcat USB time jailbreak installing considered fashioned good luck power cycling albeit guide blackcat extremely ypur Requirements on fw Flip Software i used Psgroove Teensy 0 Hex file w Manager pkg External Drive Original Game Disc
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