I need to connect an internet key on usb.
the currents are compatible?
by testing everything is ok.
HW is sized well. can I be sure?
thanks
Re: usb current B+
What is an "internet key"?
And even when we know what you mean by such a generic term it will probably be helpful if you tell us the specific make and model number.
And even when we know what you mean by such a generic term it will probably be helpful if you tell us the specific make and model number.
Quis custodiet ipsos custodes?
Re: usb current B+
example:
http://consumer.huawei.com/it/mobile-br ... /index.htm
now, i'm testing with huawei k3765, hspa usb stick
the problem is not the kind of intenet key (or whatever you want to call it) but his current consumption.
nb.
the current consumption varies according to the status of connection on the network umts
How can supply B + with security?
I can't find the scheme portion of usb.
thanks
http://consumer.huawei.com/it/mobile-br ... /index.htm
now, i'm testing with huawei k3765, hspa usb stick
the problem is not the kind of intenet key (or whatever you want to call it) but his current consumption.
nb.
the current consumption varies according to the status of connection on the network umts
How can supply B + with security?
I can't find the scheme portion of usb.
thanks
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- Posts: 27225
- Joined: Tue Mar 25, 2014 12:40 pm
Re: usb current B+
If you have a 5V2A PSU you can increase the USB Current from 600ma to 1200ma
https://projects.drogon.net/testing-set ... berry-pi-b
In config.txt add:
https://projects.drogon.net/testing-set ... berry-pi-b
In config.txt add:
Code: Select all
max_usb_current=1
Take what I advise as advice not the utopian holy grail, and it is gratis !!
Re: usb current B+
thank you.
if you need an external power supply,
1- can i feed B+ from + 5V connector gpio and micro usb disconnected ?
I tried.
I noticed that for a moment the red light goes off, during startup.
there are contraindications?
2- you tell me where I can find the whole scheme of B +, so i understand how it works
Thanks again
if you need an external power supply,
1- can i feed B+ from + 5V connector gpio and micro usb disconnected ?
I tried.
I noticed that for a moment the red light goes off, during startup.
there are contraindications?
2- you tell me where I can find the whole scheme of B +, so i understand how it works
Thanks again
Re: usb current B+
The full schematic of the B+ hasn't been published.
However, from https://www.raspberrypi.org/documentati ... /README.md
and data-sheets for the 9514 USB chip and the AP2553 power-control chip, it's possible to make an educated guess as to what's going on.
I did exactly that, almost a year ago. Since I can't find my original post, here's a copy.
However, from https://www.raspberrypi.org/documentati ... /README.md
and data-sheets for the 9514 USB chip and the AP2553 power-control chip, it's possible to make an educated guess as to what's going on.
I did exactly that, almost a year ago. Since I can't find my original post, here's a copy.
Re: usb current B+
Not sure why the picture isn't appearing; I'll try again.
Re: usb current B+
ok. thanks.
are there problems if the power of B + is given (+5v, 2,4 pin) in gpio and not by micro usb? There are limitations to the maximum current hw? eg. size tracks etc ..
are there problems if the power of B + is given (+5v, 2,4 pin) in gpio and not by micro usb? There are limitations to the maximum current hw? eg. size tracks etc ..