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by Ram.Sh
Fri Mar 13, 2020 12:16 am
Forum: Troubleshooting
Topic: [SOLVED] calling ffmpeg located in ramdisk = command not found
Replies: 4
Views: 127

Re: calling ffmpeg located in ramdisk = command not found

Got to find the problem, besides the missing exec flag I had to change the file permissions to 0755.

asavah - many thanks for your help!!
by Ram.Sh
Thu Mar 12, 2020 9:28 pm
Forum: Troubleshooting
Topic: [SOLVED] calling ffmpeg located in ramdisk = command not found
Replies: 4
Views: 127

Re: calling ffmpeg located in ramdisk = command not found

after re mount the ram disk via termial:

Code: Select all

sudo mount -t tmpfs -o exec,size=512m tmpfs /usr/ramDisk

I get the same result

Code: Select all

[email protected]:~ $ sudo /usr/ramDisk/ffmpeg
sudo: /usr/ramDisk/ffmpeg: command not found
by Ram.Sh
Thu Mar 12, 2020 9:22 pm
Forum: Troubleshooting
Topic: [SOLVED] calling ffmpeg located in ramdisk = command not found
Replies: 4
Views: 127

Re: calling ffmpeg located in ramdisk = command not found

That's a correct and expected behavior, tmpfs is mounted noexec by default. How did you create your tmpfs? using something like this should work sudo mount -t tmpfs -o exec,size=512m tmpfs /usr/ramDisk thank you for your quick reply! this is how I created the ramDisk in /etc/fstab: tmpfs /usr/ramDi...
by Ram.Sh
Thu Mar 12, 2020 6:05 pm
Forum: Troubleshooting
Topic: [SOLVED] calling ffmpeg located in ramdisk = command not found
Replies: 4
Views: 127

[SOLVED] calling ffmpeg located in ramdisk = command not found

this is my first attempt to work with ram disk so most chances i miss something basic here, using RPI4 (4G) i have a ram disk of 512m named ramDisk: [email protected]:~ $ df -h Filesystem Size Used Avail Use% Mounted on /dev/root 117G 22G 91G 19% / devtmpfs 1.9G 0 1.9G 0% /dev tmpfs 2.0G 28M 1.9G 2% /d...
by Ram.Sh
Fri Feb 21, 2020 7:50 pm
Forum: Networking and servers
Topic: Need help with routing table (I think...)
Replies: 13
Views: 366

Re: Need help with routing table (I think...)

OK! i have no idea what I did exactly BUT things are working well now, the route table is: Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface 0.0.0.0 192.168.43.1 0.0.0.0 UG 203 0 0 wlan0 10.0.0.0 0.0.0.0 255.255.255.0 U 204 0 0 eth1 10.5.5.0 10.5.5.9 255.255.255.255 UGH ...
by Ram.Sh
Fri Feb 21, 2020 6:44 pm
Forum: Networking and servers
Topic: Need help with routing table (I think...)
Replies: 13
Views: 366

Re: Need help with routing table (I think...)

Nothing under Raspbian will give metric 0 or metric 20x to a route via a wireless interface without some serious manual configuration “magic”. I’ve seen nothing in the config fragments you posted that would have an effect on metric values. So either you missed disclosing some information, or some p...
by Ram.Sh
Fri Feb 21, 2020 5:59 pm
Forum: Networking and servers
Topic: Need help with routing table (I think...)
Replies: 13
Views: 366

Re: Need help with routing table (I think...)

@DougieLawson, I assumed that each card as its own static route/dns, from your reply i get that was a wrong assumption, i removed all preset from my etc/dhcpcd.conf besides a static IP from the eth1 to be used by VNC: interface eth1 static ip_address=10.0.0.50/24 after reboot, wlan0 is not connected...
by Ram.Sh
Fri Feb 21, 2020 4:58 pm
Forum: Networking and servers
Topic: Need help with routing table (I think...)
Replies: 13
Views: 366

Re: Need help with routing table (I think...)

after another brutal process i got to have it working with the following routing table, however each call takes some time as it tries to resolve the host name until it connects: Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface 0.0.0.0 192.168.43.1 0.0.0.0 UG 0 0 0 wlan0...
by Ram.Sh
Fri Feb 21, 2020 3:35 pm
Forum: Networking and servers
Topic: Need help with routing table (I think...)
Replies: 13
Views: 366

Re: Need help with routing table (I think...)

added after posting: spoked too soon... although both wifi connected and the camera responding I now can't reach the internet -------------------------------------------------------------------------------------------------------------------------------------------------------------------------- a q...
by Ram.Sh
Fri Feb 21, 2020 2:16 pm
Forum: Networking and servers
Topic: Need help with routing table (I think...)
Replies: 13
Views: 366

Re: Need help with routing table (I think...)

thank you DougieLawson for taking the time! wlan1 is connected to the camera, the camera is running as an Access Point and its IP is 10.5.5.9 eth1 is connected to my home router Access Point (10.0.0.1), the address 10.0.0.50 is the static IP for eth1 wlan0 is connected to a mobile hotspot which is a...
by Ram.Sh
Fri Feb 21, 2020 12:52 am
Forum: Networking and servers
Topic: Need help with routing table (I think...)
Replies: 13
Views: 366

Re: Need help with routing table (I think...)

and another update (hope it's not considered rude to reply to me...) i disabled the static IP for wlan1, restart it and got an IP from the system: wlan1: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 inet 10.5.5.101 netmask 255.255.255.0 broadcast 10.5.5.255 inet6 fe80::860d:f991:8a76:b7a0 pre...
by Ram.Sh
Fri Feb 21, 2020 12:40 am
Forum: Networking and servers
Topic: Need help with routing table (I think...)
Replies: 13
Views: 366

Re: Need help with routing table (I think...)

I used another PI4 to connect to the same camera at the same time, on the second PI there is no problem to reach to the camera' webserver, comparing the route tables from both PIs shows that the problem is somewhere else (if i get this correct) route table of the PI that can reach the camera: Kernel...
by Ram.Sh
Thu Feb 20, 2020 10:52 pm
Forum: Networking and servers
Topic: Need help with routing table (I think...)
Replies: 13
Views: 366

Need help with routing table (I think...)

Hello all, running PI4 buster version, i have three active network cards: eth1 connected to wired lan wlan0 connected to mobile hotspot wlan1 connected to GoPro camera my problem is while I'm connected to the camera i can't reach it; these are my current settings: /etc/dhcpcd.conf: interface wlan0 s...
by Ram.Sh
Thu Feb 13, 2020 8:07 pm
Forum: Troubleshooting
Topic: Need Help: SPI between PI zero and Arduino 33 BLE
Replies: 0
Views: 37

Need Help: SPI between PI zero and Arduino 33 BLE

Hello all, I'm struggling (huge understatement) with getting any data from an Arduino 33 BLE to RPI Zero, since I don't really know where the problem is (well, the problem is my lack of knowledge.. ) I'd appreciate if you could have a look at my wiring and tell me if its correct (not sure if the SPI...
by Ram.Sh
Tue Feb 11, 2020 4:46 pm
Forum: Camera board
Topic: Need Help: Stream from Pi Zero to Pi4 (Raspivid | Netcat >> Netcat | Mplayer)
Replies: 0
Views: 130

Need Help: Stream from Pi Zero to Pi4 (Raspivid | Netcat >> Netcat | Mplayer)

Hello, my current goal is to stream video from a camera v2.1 connected to Pi Zero/w over to Pi4 to preview it on the Pi4, I.m trying to stream the video using raspivid to netcat on the Pi Zero: raspivid -t 0 -w 1280 -h 720 -o – | nc 10.0.0.189 5000 and view it on the PI4 from netcat to mplayer: [email protected]...
by Ram.Sh
Tue Feb 04, 2020 4:54 am
Forum: Troubleshooting
Topic: Failing to install OSMNX
Replies: 0
Views: 487

Failing to install OSMNX

Hello all, I truly need an assistance with installing the OSMNX lib, i'm running Pi4 4G: Linux raspberrypi 4.19.75-v7l+ #1270 SMP Tue Sep 24 18:51:41 BST 2019 armv7l GNU/Linux Python 3.7.3 pip 18.1 from /usr/lib/python3/dist-packages/pip (python 3.7) i"m trying to install: sudo pip3 install osmnx th...
by Ram.Sh
Mon Feb 03, 2020 9:38 pm
Forum: Troubleshooting
Topic: Raspberry Pi 4 doesnt boot/flash 4 green RPI=RIP
Replies: 16
Views: 654

Re: Raspberry Pi 4 doesnt boot/flash 4 green RPI=RIP

Botspot wrote: Just curious: what do you plan to do with it?
nothing.
by Ram.Sh
Mon Feb 03, 2020 8:00 pm
Forum: Troubleshooting
Topic: Raspberry Pi 4 doesnt boot/flash 4 green RPI=RIP
Replies: 16
Views: 654

Re: Raspberry Pi 4 doesnt boot/flash 4 green RPI=RIP

RIP it is then.

many thanks for your time and effort!!
by Ram.Sh
Mon Feb 03, 2020 7:46 pm
Forum: Troubleshooting
Topic: Raspberry Pi 4 doesnt boot/flash 4 green RPI=RIP
Replies: 16
Views: 654

Re: Raspberry Pi 4 doesnt boot/flash 4 green RPI=RIP

so it's alive but dead? that's funny, i know a few people that fall into that definition also :)

so in your opinion, i should stop trying to salvage it?
by Ram.Sh
Mon Feb 03, 2020 7:07 pm
Forum: Troubleshooting
Topic: Raspberry Pi 4 doesnt boot/flash 4 green RPI=RIP
Replies: 16
Views: 654

Re: Raspberry Pi 4 doesnt boot/flash 4 green RPI=RIP

not quite, i used a line of devices (sensors) connected through I2C, they got the power from the 5v instead of the 3.3v, from that moment the PI didn't boot, I transffered and connected the same setup to a different PI, this time used the 3.3v and all work as it should, then (now) i got back to fix ...
by Ram.Sh
Mon Feb 03, 2020 6:53 pm
Forum: Troubleshooting
Topic: Raspberry Pi 4 doesnt boot/flash 4 green RPI=RIP
Replies: 16
Views: 654

Re: Raspberry Pi 4 doesnt boot/flash 4 green RPI=RIP

yes, same power source.

i think the root of the problem was connecting to one of the GPIO a sensor that uses 5v at the time...
by Ram.Sh
Mon Feb 03, 2020 6:44 pm
Forum: Troubleshooting
Topic: Raspberry Pi 4 doesnt boot/flash 4 green RPI=RIP
Replies: 16
Views: 654

Re: Raspberry Pi 4 doesnt boot/flash 4 green RPI=RIP

i will try that also.

i have a different working PI4 same model as the failed one; when i use the SD card from the PI that works i still get the 4 flashes... thoughts?
by Ram.Sh
Mon Feb 03, 2020 6:30 pm
Forum: Troubleshooting
Topic: Raspberry Pi 4 doesnt boot/flash 4 green RPI=RIP
Replies: 16
Views: 654

Re: Raspberry Pi 4 doesnt boot/flash 4 green RPI=RIP

i used Win32DiskImager with Buster and also the recovery from https://www.raspberrypi.org/downloads/
by Ram.Sh
Mon Feb 03, 2020 6:25 pm
Forum: Troubleshooting
Topic: Raspberry Pi 4 doesnt boot/flash 4 green RPI=RIP
Replies: 16
Views: 654

Re: Raspberry Pi 4 doesnt boot/flash 4 green RPI=RIP

thanks for the quick reply!

unfortunately, I tried that too... on three separate SD cards.
by Ram.Sh
Mon Feb 03, 2020 6:16 pm
Forum: Troubleshooting
Topic: Raspberry Pi 4 doesnt boot/flash 4 green RPI=RIP
Replies: 16
Views: 654

Raspberry Pi 4 doesnt boot/flash 4 green RPI=RIP

my beloved PI4 is no longer booting up. i have followed the instructions from here : Is the bootloader working correctly? To check that the bootloader is working correctly, turn off the power, unplug everything from the Raspberry Pi 4, including the SD card, and then turn the power back on. If the g...

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