Raspberry Pi Forums

SurferTim

This is wrong if these are IP, subnet, and gateway. The gateway would be unreachable. 192.168.137.1 255.255.255.0 192.168.0.1 The xx.xx.xx.1 IP is normally the router. If you are connecting to the PC, and the PC has the ethernet and wifi bridged, you should use dhcp initially to insure all is workin...

SurferTim

It may not be as financially affordable as other pi products, but the compute module allows stereoscopic video.
https://raspberrypi.stackexchange.com/q ... ronization

SurferTim

OK, but for anyone else, my code doesn't use a library. It is the "library".

SurferTim

I found my C code for interfacing to the PWM IC used on your hat. I use a breakout board with the same IC. #include <stdio.h> #include <stdlib.h> #include <linux/i2c-dev.h> #include <fcntl.h> #include <string.h> #include <sys/ioctl.h> #include <sys/types.h> #include <sys/stat.h> #include <unistd.h> ...

SurferTim

If you mean the EUI-64 address, the mac address is split into its upper three bytes and lower three bytes, then FF:FE is inserted between them.

SurferTim

If you want the servo IC code, you might be able to reverse engineer the servo library written for the Arduino. As C++ code goes, it is pretty simple. I use it on Arduinos, but haven't converted it to the RPi yet.
https://github.com/adafruit/Adafruit-PW ... er-Library

SurferTim

You can change the metric in dhcpcd.conf also if you require that.

SurferTim

Is your Raspbian version Wheezy or Jessie? If Jessie, you should assign static IPs in /etc/dhcpcd.conf.
edit: If Wheezy, maybe you should add a gateway to your static assignment on eth0.

SurferTim

drgeoff wrote:
SurferTim wrote:You will need about 65 amps of 5 volt to run all those.
I'd say closer to half of that.

Oh, so a 1.25A power supply is ok on a RPi3? Seems I wasted my money buying that 2.5A wall wart as was recommended?

SurferTim

I use a buck DC-DC converter (95% efficiency) with a 6S 5000ma LIPO. It lasts several hours, depending on how busy the RPi is. It does 6 hours easy.

SurferTim

You will need about 65 amps of 5 volt to run all those.

DC-DC power supplies would be your best bet. That will depend on the maximum voltage/current output of the tractor's generator/alternator.

SurferTim

Then it probably was the rpi-update that did it to you.

SurferTim

In a terminal, run groups. Check if you are a member of group sudo.

SurferTim

You shouldn't be concerned with DDoS attacks. Hacking is the biggest threat. A good firewall program will help, I use gufw. If you expose ssh to the internet and haven't changed your password from the default, you will be hacked. It isn't an "if", it's a "when". edit: If you haven't heard, there is ...

SurferTim

If you would have followed my first reply post, you wouldn't have to wait several minutes to
acquire the time.

SurferTim

Your posts are conflicting. One post states the RPi IP is 192.168.137.2 and the other 192.168.0.7.

Ditch the algebra. Post the RPi IP, the laptop ethernet IP, and the laptop wifi IP.

Did you use Internet Connection Sharing, or did you bridge the connections?

SurferTim

I did nothing else to my RPi3 NTP clients except adding the localnet server IP and commenting out the other internet servers, and my clients work fine. I did nothing to my RPi3 NTP server except open udp port 123 on the firewall (I have gufw installed) and it was immediately recognized as a time sou...

SurferTim

OutsourcedGuru wrote:Not sure about the fstab entry. I seem to recall that the third column is file system type and you have auto there. You might try "ntfs-3g" for that.

As long as you have installed ntfs-3g, either ntfs-3g or auto will work. I've tried both.

SurferTim

That is a server error. It may mean the server is overloaded or down for repair.

SurferTim

I use this in /etc/fstab for my ntfs formatted drive. I don't know where you want to mount it. This mounts it in /home/pi/extdrive. That directory must exist. UUID=1D1798506089E3C4 /home/pi/extdrive auto auto,nofail,rw,default 0 0 edit: It will automount correctly only on bootup. If I try to mount i...

SurferTim

Then you have virtually the same setup I do. See my first response to your post. If your NTP server has a firewall, insure it allows UDP port 123 through.

SurferTim

What do you mean "without the algebra"? I'm good up to trigonometry. Can you ping 192.168.137.1 from the RPi? edit: There is no sense going any further until you can ping the localnet gateway. Is there any entry in the laptop's firewall that may be stopping the ping? Post the wifi network settings f...

SurferTim

How many remote (internet) NTP servers are you using? I think "Off the Grid" is the clue to that one.... PeterO That is what I initially thought. I use one NTP server on my localnet. All localnet devices use it. The simple mod I recommended above works great for me. No stratum stuff needed. None of...

SurferTim

My setup works consistently well, but maybe I am not understanding your problem. How many localnet NTP servers do you have? How many remote (internet) NTP servers are you using?

SurferTim

I presume your masquerade is done in the 192.168.178.1 router.

In that router, you must route the 192.168.1.0/24 and 192.168.2.0/24 to the gateway 192.168.178.100.

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