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by Emma_Jir
Sun Mar 11, 2018 6:33 pm
Forum: Arch
Topic: Archlinux-ARM for RPi 3
Replies: 4
Views: 4584

Re: Archlinux-ARM for RPi 3

Is a Raspberry Pi Model 3B v1.2 incompatible with this Version of Archlinux-ARM: http://os.archlinuxarm.org/os/ArchLinuxARM-rpi-3-latest.tar.gz ? I thought the Model 3b was ARMv8 Yes quite so, but it can run ARMv7 OS, though Arch do offer a ARM64 release: https://archlinuxarm.org/platforms/armv8/br...
by Emma_Jir
Sun Mar 11, 2018 6:30 pm
Forum: Arch
Topic: Archlinux-ARM for RPi 3
Replies: 4
Views: 4584

Re: Archlinux-ARM for RPi 3

Is a Raspberry Pi Model 3B v1.2 incompatible with this Version of Archlinux-ARM: http://os.archlinuxarm.org/os/ArchLinuxARM-rpi-3-latest.tar.gz ? I thought the Model 3b was ARMv8 Yes quite so, but it can run ARMv7 OS, though Arch do offer a ARM64 release: https://archlinuxarm.org/platforms/armv8/br...
by Emma_Jir
Sun Mar 11, 2018 12:38 pm
Forum: Arch
Topic: Archlinux-ARM for RPi 3
Replies: 4
Views: 4584

Archlinux-ARM for RPi 3

Is a Raspberry Pi Model 3B v1.2 incompatible with this Version of Archlinux-ARM:
http://os.archlinuxarm.org/os/ArchLinux ... est.tar.gz ?

I thought the Model 3b was ARMv8
by Emma_Jir
Fri Feb 02, 2018 7:46 pm
Forum: Beginners
Topic: ACT Led
Replies: 12
Views: 1503

Re: ACT Led

If I am running my pi 3B headless I often run it on a 5V 2A switch mode power supply. ( Not a battery charger that many people seem to use ) but if I have things connected to the usb like drives keyboard mouse etc then I use a raspberry official 2.5A power supply. If you 2A power supply with usb ca...
by Emma_Jir
Mon Jan 22, 2018 9:35 pm
Forum: Beginners
Topic: ACT Led
Replies: 12
Views: 1503

Re: ACT Led

I see. Does everyone use a 2 Ampere plug? I thought this is only necessary if you have any powerhungry devices attatched to it wich isn't the case. And if so it's because of high currents. I read that a Raspberry pi 3B runs on 5.1V. The USB-port provides 5V. I wonder because it worked fine all the t...
by Emma_Jir
Mon Jan 22, 2018 1:18 pm
Forum: Beginners
Topic: ACT Led
Replies: 12
Views: 1503

Re: ACT Led

If the RED LED is flashing or going out completely then it indicates that the voltage being supplied to the pi is to low, either your psu is not up to the job or your cable between the psu & pi needs to be replaced with a better quality one. if you continue to operate with an under voltage conditio...
by Emma_Jir
Mon Jan 22, 2018 10:57 am
Forum: Beginners
Topic: ACT Led
Replies: 12
Views: 1503

Re: ACT Led

Thanks
pcmanbob wrote:
Sun Jan 21, 2018 3:24 pm
RED LED indicates that the voltage being supplied is good ( above 4.65V I think ) while ever it it on.
Weird. I see it when it's in standby and i have a ticking signal sometimes when i run some commands while the system is up.
by Emma_Jir
Sun Jan 21, 2018 3:15 pm
Forum: Beginners
Topic: ACT Led
Replies: 12
Views: 1503

ACT Led

I am trying to figure out the led signals on a raspberry Pi 3B.
I understand that the ACT-Led is located next to the wlan-antenna and indicates microsd-activity. Below is the red standby-led. Is there any led that directly indicates wlan-activity like on the Ethernet-Port?
by Emma_Jir
Sun Dec 31, 2017 1:11 pm
Forum: Beginners
Topic: Interrupt on a GPIO Pin
Replies: 7
Views: 2195

Re: Interrupt on a GPIO Pin

Ok thank you so far. I have one more question regarding this topic peripherally, if not i can open a different thread and mark this one as solved:

on the python-gpio-module is there a way to wait for interrupts on two pins at the same time (like a logic or)?
by Emma_Jir
Sun Dec 31, 2017 12:50 pm
Forum: Beginners
Topic: Interrupt on a GPIO Pin
Replies: 7
Views: 2195

Re: Interrupt on a GPIO Pin

Please post your circuit, or a photo of your setup. 70mA is not consistent with pulling down through 270 ohms, indeed the current should be limited by the internal pull-up to a much lower value. Apart from that, as Joan says there is no risk of damage from using edge-detect interrupts rather than p...
by Emma_Jir
Sun Dec 31, 2017 12:30 pm
Forum: Beginners
Topic: Interrupt on a GPIO Pin
Replies: 7
Views: 2195

Re: Interrupt on a GPIO Pin

I don't know what was meant by polling may be better. It would make no difference to the electrical connections or the current consumption. When set as an input the GPIO won't be drawing any significant current, perhaps in the microamp region. I don't know, due to complicated circustances component...
by Emma_Jir
Sun Dec 31, 2017 11:57 am
Forum: Beginners
Topic: Interrupt on a GPIO Pin
Replies: 7
Views: 2195

Interrupt on a GPIO Pin

Hello, I've been using a script that wait's for a falling_edge on a GPIO Pin. The pin is pulled up to high (by the script, not physical) by default and pulled to ground over a low resistor by a button (COM-00097). It works fine but i've heard that when using components like above polling would be a ...
by Emma_Jir
Thu Dec 21, 2017 6:34 pm
Forum: Troubleshooting
Topic: push buttons interrupts
Replies: 9
Views: 4233

Re: push buttons interrupts

Attaching a push-button to an interrupt is not a good idea; because of contact bounce it can trigger hundreds (or thousands) of interrupt signals... also, the interrupt mechanism needs to know rising edge or falling edge and it can't keep that straight with contact bounce. You can use bounce condit...
by Emma_Jir
Tue Dec 12, 2017 1:40 pm
Forum: Beginners
Topic: Physical placement for a Raspberry Pi
Replies: 5
Views: 598

Re: Physical placement for a Raspberry Pi

Anti-static materials work because they are electrical conductors. You do NOT want that material in contact with a circuit board that is powered on. Acrylic, on the other hand, is an electrical insulator, so being in contact with a circuit board is just fine. Thank you. I was wondering if any diele...
by Emma_Jir
Sat Dec 02, 2017 11:50 am
Forum: Beginners
Topic: Physical placement for a Raspberry Pi
Replies: 5
Views: 598

Physical placement for a Raspberry Pi

Hello i intend to use my RPi permanently in my household and built a physical "mountpoint". It's an acryl-glass board screwed to the wall with 2 steel pins that hold the Print itself without insulation. Between the RPi itself and the acrylic glass i used a peace of antistatic foil because i don't kn...
by Emma_Jir
Fri Dec 01, 2017 3:27 pm
Forum: HATs and other add-ons
Topic: RUN breakout on B+
Replies: 24
Views: 41894

Re: RUN breakout on B+

Right, thanks for the rectification i got confused.

The last question would be wich one is input and wich one is gnd on pi model 3B+ i can't make that out.
by Emma_Jir
Thu Nov 30, 2017 7:49 pm
Forum: HATs and other add-ons
Topic: RUN breakout on B+
Replies: 24
Views: 41894

Re: RUN breakout on B+

klricks wrote:
Thu Nov 30, 2017 1:50 pm
"Tri state" has nothing to do with the RUN pins or any other pins on the RPi......
so the rpi-technology is beyond tri-state?
by Emma_Jir
Thu Nov 30, 2017 1:01 pm
Forum: HATs and other add-ons
Topic: RUN breakout on B+
Replies: 24
Views: 41894

Re: RUN breakout on B+

Thank you i forgot about this tri-state-thing. But the location of the pins on model 3b+ is correct (between GPIO-Pins and USB-Ports roughly on the upper right corner)?
by Emma_Jir
Wed Nov 29, 2017 11:53 am
Forum: HATs and other add-ons
Topic: RUN breakout on B+
Replies: 24
Views: 41894

Re: RUN breakout on B+

Has anyone tried tose on a 3B+ Model? I suppose they are located right under Pin 39 (GND) next to the usb port. I carefully soldered wires to them but it seems that they response very sensitively. I tried short circuiting them over a kOhm-Resistor but it is not allways effective. It seems they respo...

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