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by Gert
Thu Sep 19, 2019 10:14 pm
Forum: Troubleshooting
Topic: Can fstab be adjusted for time delay when spin-up of disk takes longer ?
Replies: 4
Views: 126

Re: Can fstab be adjusted for time delay when spin-up of disk takes longer ?

OK, I have put a mount -a into crontab with a 30sec wait after boot. Kind of awkward but works and nothing else is slowed down. Was just wondering if there is a flag in fstab to wait for a device to be ready (or ready+xx sec) to execute the mounting.
Cheers,
Gert
by Gert
Wed Sep 18, 2019 12:19 am
Forum: Troubleshooting
Topic: Can fstab be adjusted for time delay when spin-up of disk takes longer ?
Replies: 4
Views: 126

Can fstab be adjusted for time delay when spin-up of disk takes longer ?

Hello All, To build a mini-NAS I have bought a new Seagate 5T 2.5inch disk and attached the USB to the RPI3. (Yes, it's slow and I plan to upgrade this rig to RPI4 with USB3) Seems the spin-up and self test of the disk take longer during the boot sequence than the point in time when mount is called....
by Gert
Tue Sep 17, 2019 12:33 am
Forum: Networking and servers
Topic: More disks on RPI4B -> Powered HUB or bigger supply ?
Replies: 5
Views: 212

Re: More disks on RPI4B -> Powered HUB or bigger supply ?

Hi, The 5V USB power is limited to 1.2A by the USB controller chip. That is usually enough to run 1 HDD only. Providing more Amps to the RPi power input will not help. In prev. thread rpdom said : " Unless things have changed on the Pi4, all the power pins for the USB ports are connected together. T...
by Gert
Tue Sep 17, 2019 12:18 am
Forum: Networking and servers
Topic: More disks on RPI4B -> Powered HUB or bigger supply ?
Replies: 5
Views: 212

More disks on RPI4B -> Powered HUB or bigger supply ?

Hello All, Follow-up on the thread : https://www.raspberrypi.org/forums/viewtopic.php?f=36&t=251437 The Seagate 5T disk powers up and works fine on the RPI4B with the 3A AC adapter (Came as part of the 'Vilros' Kit from Amazon). Now the stretch-goal was to have both the 2T and the 5T disk attached a...
by Gert
Mon Sep 16, 2019 2:49 pm
Forum: Troubleshooting
Topic: Headless PI VNC 'No session for pid ...'
Replies: 0
Views: 40

Headless PI VNC 'No session for pid ...'

Hello All, I'm running a headless RPI4B 'buster' with access via VNC. When I establish VNC connection on the client for the first time after booting the RPI I get this error message popup saying "No session for pid 858". The pip has following info: ps -eaux | grep 858 gottsch 858 0.2 0.4 49612 19024...
by Gert
Sun Sep 15, 2019 9:41 pm
Forum: Networking and servers
Topic: Generic storage benchmark on RPI
Replies: 2
Views: 110

Generic storage benchmark on RPI

Hi Folks, There's a lot of disk benchmarking done for SSD / SD etc and other storage using CrystalDiskMark which runs on PC. Is there an equivalent running natively on RPI raspian? It will be a better 'whole-system' test for storage performance that just testing the media on a PC without taking inte...
by Gert
Sun Sep 15, 2019 8:59 pm
Forum: Troubleshooting
Topic: Samba uses machine name instead of netbios name.
Replies: 4
Views: 105

Re: Samba uses machine name instead of netbios name.

Hi, There is a valid reason why this is happening, the NetBIOS name MUST be the computers hostname, you cannot change what is displayed on Windows by setting the 'netbios name' parameter. It works for the other RPIs. See below example vs above screen copy. There must be a subtle version change that ...
by Gert
Sat Sep 14, 2019 10:47 pm
Forum: Troubleshooting
Topic: Mount usb drive changes access permission of mount point to root
Replies: 6
Views: 133

Re: Mount usb drive changes access permission of mount point to root

Yes, that fixed it. What's the difference between the ntfs (that comes with the distribution) and ntfs-3g (that is an add-on install) ?
Cheers,
Gert
DougieLawson wrote:
Sat Sep 14, 2019 8:03 pm
What's the format of the filesystem? If it's NTFS run sudo apt install ntfs-3g before doing anything else.
by Gert
Sat Sep 14, 2019 9:13 pm
Forum: Troubleshooting
Topic: Samba uses machine name instead of netbios name.
Replies: 4
Views: 105

Samba uses machine name instead of netbios name.

Hello All, Using samba on RPI4B with buster. I'm giving a netbios name for the server, but windows 7 PC decides to use the machine name instead. The shares themselves are OK and access permissions work fine. Just the PC ignoring of the name I've given to the server is annoying. smb.conf #===========...
by Gert
Sat Sep 14, 2019 7:41 pm
Forum: Troubleshooting
Topic: Mount usb drive changes access permission of mount point to root
Replies: 6
Views: 133

Mount usb drive changes access permission of mount point to root

Hi All, I decided against the system mount point of a USB disk /media/pi/<name> and wanted to do it myself. Esp. I want R/W access to the storage for my own non-root account (and possibly any other non-root account) (probably not pi-account, I don't like it) I made mount point and adjusted permissio...
by Gert
Wed Mar 20, 2019 4:26 pm
Forum: Automation, sensing and robotics
Topic: RPI + INA219 with off grid solar panel
Replies: 5
Views: 706

Re: RPI + INA219 with off grid solar panel

Thank you Gavinmc42,

That's great material. I'll look into the ADM3260. I only need it between the RPI I2C bus and the INA219 sensor (for the solar panel). Do you know of anybody making a small project PCB for the chip? I don't want to do the smd soldering.

Thanks,
Gert
by Gert
Tue Mar 19, 2019 5:20 am
Forum: Automation, sensing and robotics
Topic: RPI + INA219 with off grid solar panel
Replies: 5
Views: 706

Re: RPI + INA219 with off grid solar panel

Hi Gavinmc42

Can you give some advice how to connect VDD GND between the RPI / INA219 / ADUM1250 ? Where is GND connected to what?

Thanks,
Gert
by Gert
Mon Mar 18, 2019 5:49 am
Forum: Automation, sensing and robotics
Topic: RPI + INA219 with off grid solar panel
Replies: 5
Views: 706

RPI + INA219 with off grid solar panel

Hi All, I need your help understanding how the INA219 measures the voltage. Of course the current is from the shunt resistor. But where is the 0 point of the voltage? I assume it's the bus GND pin vs. the Vin+ pin at the shunt. That's fine. But what if the GND is galvanically isolated?? Let me expla...
by Gert
Thu Mar 14, 2019 5:46 am
Forum: General discussion
Topic: 4G Modem on RPI in rural area
Replies: 4
Views: 1116

Re: 4G Modem on RPI in rural area

Hello All, Update on the project. I got a 20W solar panel, charge controller, 12V gel cell battery, 5V RPI adapter. I will run this at my place to find out if the 20W solar and 12V 7Ah battery are enough to run the RPI 24/7. The RPI is of course headless and has no external disk etc. to power. I've ...
by Gert
Fri Nov 30, 2018 5:22 am
Forum: General discussion
Topic: 4G Modem on RPI in rural area
Replies: 4
Views: 1116

Re: 4G Modem on RPI in rural area

Hi all, I found this company offering a piggyback board for the Raspberry that adapts to mini PCIe modem modules. Board $39 : https://sixfab.com/product/raspberry-pi-3g-4glte-base-shield-v2/ Modem 4G LTE $69 : https://sixfab.com/product/quectel-ec25-mini-pcle-4glte-module/ The tricky part is what da...
by Gert
Thu Nov 22, 2018 1:11 am
Forum: General discussion
Topic: 4G Modem on RPI in rural area
Replies: 4
Views: 1116

4G Modem on RPI in rural area

Hi All, Our astronomy club has a small observatory shed in a rural area with no wired connectivity. Solar panel and marine battery are there for limited power. There is data coverage by 'Verizon'. What is the best way to have an RPI 24/7 active at the shed with USB 4G modem (recommendations?). The g...
by Gert
Tue Nov 13, 2018 10:58 pm
Forum: Automation, sensing and robotics
Topic: Successor to Ciseco XRF slice of radio
Replies: 1
Views: 812

Successor to Ciseco XRF slice of radio

Hello All, Unfortunately Ciseco is no more. They had a wonderful remote sensor package based on TI1110. Extremely low power sleep capability and lots of choices for sensors with nice API. Is there any successor to their material? I am looking for battery based RF weather sensors (temperature, pressu...
by Gert
Sat Mar 17, 2018 11:44 pm
Forum: Troubleshooting
Topic: Console copy/paste middle mouse button fails
Replies: 0
Views: 160

Console copy/paste middle mouse button fails

Hello All, The copy/paste ( menu + middle mouse button ) feature in my RPI console is broken. I have multiple RPIs and the others perform the expected functionality of mouse button highlight of text and then middle-mouse-button paste. (or console menu edit->copy + edit->paste). Just on one RPI it is...
by Gert
Mon Mar 05, 2018 4:47 pm
Forum: Troubleshooting
Topic: Tons of DHCPDISCOVER syslog messgaes when LAN wire not connected
Replies: 10
Views: 1127

Re: Tons of DHCPDISCOVER syslog messgaes when LAN wire not connected

auto eth0 iface eth0 inet dhcp Try without "auto eth0", ... but with "allow-hotplug eth0" instead of "auto eth0". The interface (dhcp) will be started only, when the kernel detects a hotplug event (... cable being connected) from the interface "eth0". I will try that. Does it make sense to make bot...
by Gert
Mon Mar 05, 2018 5:07 am
Forum: Troubleshooting
Topic: Tons of DHCPDISCOVER syslog messgaes when LAN wire not connected
Replies: 10
Views: 1127

Tons of DHCPDISCOVER syslog messgaes when LAN wire not connected

Hello All, I've setup my RPI (raspian wheezy) (yes, I know it's ancient but I'm not going to change it) to have static wlan and DCHP eth0 interfaces. I want a fixed wlan IP to reliably access it (it's doing weather logging in my shed) but a safe wire fallback if something happens. (Thus I don't want...
by Gert
Mon Mar 05, 2018 1:40 am
Forum: Troubleshooting
Topic: What's the correct setting for Kensignton Keyboard ?
Replies: 1
Views: 247

What's the correct setting for Kensignton Keyboard ?

Hello All, I have a 'Kensington K64370A' Keyboard. You can see the specs at Amazon. https://www.amazon.com/Kensington-64370A-Keyboard-Standard-Connected/dp/B0002SAF64/ref=sr_1_2?ie=UTF8&qid=1520213328&sr=8-2&keywords=kensington+keyboard+k64370a I tried to set the keyboard in raspi-config but was una...
by Gert
Mon May 29, 2017 3:37 am
Forum: Deutsch
Topic: Sensorverbindung im Kilometerbereich ?
Replies: 9
Views: 1591

Re: Sensorverbindung im Kilometerbereich ?

Hallo Beisammen, @smartifahrer. Danke für den Link. Also ich brauche ja nur 1.5km (gemessen mit Google Earth Lineal). Die Gartenlaube ist natürlich auf Bodenhöhe. Allerdings ist unsere Wohnung im 4. Stock (Dachwohnung) im Haus. Also man hätte da einen guten Überblick. Laut Google Earth ist ein Hochh...
by Gert
Sun May 21, 2017 3:54 am
Forum: Deutsch
Topic: Sensorverbindung im Kilometerbereich ?
Replies: 9
Views: 1591

Re: Sensorverbindung im Kilometerbereich ?

@mline

Danke für die Tipps. Gibt es Erfahrungswerte in kilometern, was man mit LoRa im städtischen Gebiet erreichen kann?

Cheers,
Gert
by Gert
Mon May 15, 2017 6:49 am
Forum: Deutsch
Topic: Sensorverbindung im Kilometerbereich ?
Replies: 9
Views: 1591

Sensorverbindung im Kilometerbereich ?

Hallo Beisammen, Was empfehlen die Experten für eine Sensorverbindung bei ca 1.5km ? Es geht um unsere Laube im Garten. Da hatte es im Winter durch Frost einen Wasserschaden gegeben. Das soll nun besser überwacht werden. Das einzige, was es in der Laube gibt ist Strom. Keine Telefon. Kein Internet. ...
by Gert
Wed Apr 05, 2017 5:24 am
Forum: Troubleshooting
Topic: RPI has picked up an IP address that it shouldn't
Replies: 1
Views: 269

RPI has picked up an IP address that it shouldn't

Hi All, I'm checking the clients table in my router and surprisingly find that my RPI is listed under an additional address that it shouldn't have. I'm giving it a hard coded static address in the interfaces file. Yet it also shows an address from the DHCP range of the router. I thought it was a dea...

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