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by FM81
Tue Oct 18, 2016 2:36 am
Forum: Troubleshooting
Topic: Samba acces denied on windows 10
Replies: 8
Views: 6038

Re: Samba acces denied on windows 10

Linux-permissions of you share may be wrong? SAMBA didn't give or create them, never, in none case! They have to exist independly ... May be, it could be useful to post contents of your /etc/samba/smb.conf or what ever the real name of you SAMBA-config is. Also, what gives ls -la /media/serverhdd/cl...
by FM81
Sat Oct 08, 2016 11:46 am
Forum: Other projects
Topic: Portable Pi power problems
Replies: 7
Views: 1716

Re: Portable Pi power problems

I'm using this http://www.exp-tech.de/pololu-5v-step-u ... er-u3v50f5 to power a RPi2 together with the official screen and some USB-devices (bluetooth & wlan) from a 6600mAh Li-Po.
(But I've also tested it over a shorter period with the model3 and it has worked too.)

Greetings, FM_81
by FM81
Wed Sep 28, 2016 5:25 pm
Forum: Advanced users
Topic: Network booting with isc-dhcp and tftpd not working
Replies: 19
Views: 6877

Re: Network booting with isc-dhcp and tftpd not working

Solskogen wrote:option option-43 "192.168.0.1";
option option-66 "Raspberry Pi Boot ";
Swap it! 66 is the server, 43 is the string! I'm also not familiar with the isc-dhcp-syntax, so may be there is an issue too?

MfG, FM_81
by FM81
Wed Sep 28, 2016 5:20 pm
Forum: Advanced users
Topic: Adding IP address to MOTD
Replies: 5
Views: 2325

Re: Adding IP address to MOTD

May be this

Code: Select all

@reboot /home/pi/Scripts/motd-update.sh > /etc/motd
starts your script at a wrong place in the startup-sequence, for example in a time-point where network isn't configured yet?

MfG, FM_81
by FM81
Wed Sep 28, 2016 9:23 am
Forum: Advanced users
Topic: Network booting with isc-dhcp and tftpd not working
Replies: 19
Views: 6877

Re: Network booting with isc-dhcp and tftpd not working

It's from the DHCP-protocol. Option 66 specifies the bootserver. (This one, which is running TFTP.) Option 43 is vendor specific. In case of a RPi the string Raspberry Pi Boot is needed, may be padded with three zero-bytes at the end. Complete list from here: http://www.iana.org/assignments/bootp-dh...
by FM81
Wed Sep 28, 2016 3:57 am
Forum: Troubleshooting
Topic: EXT4 USB Disk journal corruption
Replies: 20
Views: 3644

Re: EXT4 USB Disk journal corruption

If there is NO power-problem: Have you checked SMART-values of the hard-disk, to make sure, it is OK?
MfG, FM_81
by FM81
Wed Sep 28, 2016 3:09 am
Forum: Advanced users
Topic: Network booting with isc-dhcp and tftpd not working
Replies: 19
Views: 6877

Re: Network booting with isc-dhcp and tftpd not working

You know about bugs and limitations? See here: https://www.raspberrypi.org/blog/pi-3-booting-part-ii-ethernet-all-the-awesome/ It seems like it gets some kind of contact with my dhcp server, but it don't even as much as look at the tftp server. Can we see some log files? Have you tested option 66 fo...
by FM81
Sat Sep 24, 2016 6:47 am
Forum: HATs and other add-ons
Topic: Power draw spike at startup causing reboot
Replies: 4
Views: 1208

Re: Power draw spike at startup causing reboot

I have a RPi2 powered by an Adafruit Powerboost 1000 Charger and a 6600mAh 3-cell Li-ion battery. It seems, that hardware-setup isn't able to provide enough current all the time!? The current, especially during startup, isn't constant. Even if you would add a (very big) capacitor, it wouldn't work ...
by FM81
Sat Sep 24, 2016 6:33 am
Forum: Beginners
Topic: hot swap power source
Replies: 9
Views: 1875

Re: hot swap power source

I envision soldering a few wires just after the micro USB power port (while still powered up... yes I know there are risks!) It's in general a bad idea, to put two outputs of different powersupplys together. One powersupply could "backfeed" the other, both may survive this, but they must not ... Th...
by FM81
Thu Sep 22, 2016 8:13 pm
Forum: General discussion
Topic: Powerup/down from 2 12V sources
Replies: 11
Views: 1676

Re: Powerup/down from 2 12V sources

But if the unmount process takes too long.... the data is wasted. Any Idea how i could manage this then? I've had the same problem (not on a motorcycle, because I didn't own one, but in principle). You can verify, if the umount was successfull, and if not repeat it. Please understood my code-snippe...
by FM81
Wed Sep 21, 2016 1:57 pm
Forum: Advanced users
Topic: Pi3: NFS boot to RAM
Replies: 2
Views: 879

Re: Pi3: NFS boot to RAM

Just as an idea (not fully tested, but I have a simple NFS-server with system in RAM working): - build a small INITRAMFS-system, including NFS, bridge-utils, busybox and what ever is needed - load this in RAM via network-booting (Hope network-booting supports INITRAMFS?) - then you can configure net...
by FM81
Wed Sep 21, 2016 7:32 am
Forum: Graphics, sound and multimedia
Topic: mpc as a remote client to mpd
Replies: 2
Views: 1666

Re: mpc as a remote client to mpd

How to configure mpc client on rasp pi number 2? On raspi 2, if you like command-line: apt-get install mpc and then mpc -h 192.168.88.99 next where 192.168.88.99 is the example-address of raspi 1 (the server) and next a possible command (there are many others). Or, on raspi 2, if you like GUI: apt-...
by FM81
Mon Sep 19, 2016 10:03 pm
Forum: General discussion
Topic: Powerup/down from 2 12V sources
Replies: 11
Views: 1676

Re: Powerup/down from 2 12V sources

I mean, the 5V line stays on power the whole time. No, it doesn't. If you turn ignition off, K15 loses voltage. Tr2 closes, GPIO8 goes HIGH. C-binary detects this, initiates shutdown. GPIO X falls back to low. (you have to set this HIGH separately during bootup) C2 discharges, after few seconds Tr1...
by FM81
Mon Sep 19, 2016 9:49 pm
Forum: General discussion
Topic: Powerup/down from 2 12V sources
Replies: 11
Views: 1676

Re: Powerup/down from 2 12V sources

Or maybe you can help me quickly here: I have no idea what the specifications (or maybe exact parts) of these could be: D1...5 and Tr1 and Tr2 (but i kind of understand the use...) D1 & D2 & D3 & D5 = 1N4002 (any diode that can handle the current, you need) D4 =1N4148 (totally uncritical) Tr1 & Tr2...
by FM81
Mon Sep 19, 2016 2:07 pm
Forum: Troubleshooting
Topic: Network booting the Pi3...
Replies: 6
Views: 2024

Re: Network booting the Pi3...

Have you (for testing purposes only) inserted a sd-card with only latest bootcode.bin on it?
(If it works in this case, your RPi3 doesn't seem to work together with your switch/hub/router.)
See also here: viewtopic.php?f=29&t=156830

Greetings, FM_81
by FM81
Mon Sep 19, 2016 8:44 am
Forum: General discussion
Topic: Powerup/down from 2 12V sources
Replies: 11
Views: 1676

Re: Powerup/down from 2 12V sources

May be this one: viewtopic.php?p=792425#p792425
(But add some fuses in the plus-lines, they are missed in the picture.)

Greeting, FM_81
by FM81
Fri Aug 26, 2016 4:41 am
Forum: Deutsch
Topic: HD44780 LCD mit Laufschrift
Replies: 5
Views: 2008

Re: HD44780 LCD mit Laufschrift

Nein, nichts selbst kompiliertes! Normales 'apt-get install' ... Default-Pinbelegung ist schlecht, weil kaum noch was frei ist. Und mit der alten WHEEZY-SD-Karte funktioniert es ja. Aber auch da war nach 'apt-get install' noch irgend etwas nötig, leider erinnere ich mich nicht mehr ... Aber das ist ...
by FM81
Fri Aug 26, 2016 4:36 am
Forum: Networking and servers
Topic: Network Boot (Raspberry Pi 3)
Replies: 6
Views: 1505

Re: Network Boot (Raspberry Pi 3)

No solution, but see here, same problem: viewtopic.php?f=29&t=156830
Seems normal and depending on several things in your network, may be also hardware-related things? (as far as I understood)

Greetings, FM_81
by FM81
Fri Aug 26, 2016 3:26 am
Forum: General discussion
Topic: How Much Current for GPIO Power Supply
Replies: 3
Views: 777

Re: How Much Current for GPIO Power Supply

To decide most of your questions (as said before) it would be the best to see your circuit diagram! So here only a bunch of speculations ... ... where the Raspberry Pi will be powered off the GPIO. You mean pin 2 and 6 of the GPIO-header? They are not real GPIOs, so at this point is for these two no...
by FM81
Tue Aug 23, 2016 3:24 am
Forum: Deutsch
Topic: HD44780 LCD mit Laufschrift
Replies: 5
Views: 2008

Re: HD44780 LCD mit Laufschrift

Naja, wirklich viele Lösungen gab es hier bezüglich LCDprog und JESSIE nicht: https://www.raspberrypi.org/forums/viewtopic.php?f=28&t=149421 Das schafft zumindest einen Grund, über alternative Ansätze nachzudenken ... :) Vielen Grüße, FM_81 Off Topic: Hab jetzt lange nicht probiert, weiß jemand, ob ...
by FM81
Tue Aug 23, 2016 3:00 am
Forum: Beginners
Topic: [SOLVED]12v UPS DIY circuit attiny85 lm317
Replies: 67
Views: 18255

Re: 12v UPS DIY Help

1. Polarity of your B1 seems wrong?
2. Constant-current source can also be realized by a FET and a single resistor, makes things more easy.

Best Regards, FM_81
by FM81
Tue Aug 23, 2016 2:46 am
Forum: General discussion
Topic: network boot issues
Replies: 12
Views: 2800

Re: network boot issues

No sure, if it is the same problem: https://www.raspberrypi.org/forums/viewtopic.php?f=29&t=156830 But with the next-branch-'bootcode.bin' on a SD-card I've got full success with RPi3. [*] Not by using internal boot-ROM; works some times, but often also no success. [*] Works also at 100% on a RPi2. ...
by FM81
Thu Aug 18, 2016 7:32 pm
Forum: Advanced users
Topic: Question about Network Booting on the Raspberry Pi 3
Replies: 13
Views: 10993

Re: Question about Network Booting on the Raspberry Pi 3

OK, thanks. But all these different variants didn't explain, why, under same "race conditions", sometimes no DHCPDISCOVER is sent, or if it is sent, no Bootfile will be requested? And why all this only happens, when internal boot-ROM is used? No DHCPDISCOVER is like "a showstopper", in this case it ...
by FM81
Thu Aug 18, 2016 3:46 pm
Forum: Advanced users
Topic: Question about Network Booting on the Raspberry Pi 3
Replies: 13
Views: 10993

Re: Question about Network Booting on the Raspberry Pi 3

It makes me wonder more and more! How can a Raspberry 3 handle 'pxelinux' as bootfile? Everybody says, 'bootcode.bin' is needed? (No matter if via network or from a SD-card.) Some bugs are described here: https://www.raspberrypi.org/blog/pi-3-booting-part-ii-ethernet-all-the-awesome/ Greetings, FM_81
by FM81
Wed Aug 17, 2016 4:25 pm
Forum: Advanced users
Topic: Question about Network Booting on the Raspberry Pi 3
Replies: 13
Views: 10993

Re: Question about Network Booting on the Raspberry Pi 3

I've also running DHCP and TFTP on different machines. My DHCP is an Raspberry B1 and all the other services like TFTP, NFS and so on are running on an X86-PC. The relevant part of my dnsmasq-config is: dhcp-mac=rpi-boot,b8:27:eb:XX:XX:XX dhcp-mac=rpi-boot,b8:27:eb:YY:YY:YY dhcp-mac=rpi-boot,b8:27:e...

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