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by TideMan
Mon Sep 16, 2019 8:29 pm
Forum: Beginners
Topic: Can't access Pi over WAN
Replies: 6
Views: 155

Re: Can't access Pi over WAN

I had this problem with a previous router. It would not allow "hairpin routing", so to access my website using its external IP address, I had to use a machine outside of my LAN. When I replaced my router, the problem went away.
by TideMan
Wed Sep 04, 2019 9:44 pm
Forum: Off topic discussion
Topic: word games -- how many words from the letters.....
Replies: 8
Views: 2300

Re: word games -- how many words from the letters.....

The anagram section of Word Solver Lite on my phone found 363.
by TideMan
Sun Aug 25, 2019 11:14 pm
Forum: Wanted
Topic: I'll pay to create a raspberry pie os!
Replies: 18
Views: 1119

Re: I'll pay to create a raspberry pie os!

I'll bet the OP is sitting back laughing at all the mugs who took him seriously............
by TideMan
Sat Aug 24, 2019 10:35 am
Forum: High Altitude Balloon
Topic: Measuring Altitude
Replies: 5
Views: 300

Re: Measuring Altitude

And to perhaps state the bleeding obvious, you need to get the MSL AP at the airport BEFORE launch to calculate the offset of the instrument.
by TideMan
Thu Aug 22, 2019 8:17 pm
Forum: General discussion
Topic: Garish display on RPi4 with Buster in VNC
Replies: 3
Views: 220

Re: Garish display on RPi4 with Buster in VNC

Yes, adding -randr 1920x1080 to the command line for VNC seems to fix it, but I also had to comment out:

Code: Select all

[Pi4]
#dtoverlay=vc4-fkms-v3d
in /boot/config.txt
by TideMan
Wed Aug 21, 2019 9:04 pm
Forum: General discussion
Topic: Garish display on RPi4 with Buster in VNC
Replies: 3
Views: 220

Garish display on RPi4 with Buster in VNC

I'm running buster on an RPi4 from VNC Viewer on a 1920x1080 monitor. I've edited /boot/config.txt as follows: framebuffer_width=1900 framebuffer_height=1024 The resulting display fills the screen, but the windows and the text on the taskbar are about twice as big as I want. The screen is garish. I ...
by TideMan
Thu Aug 08, 2019 2:39 am
Forum: Troubleshooting
Topic: Backing up 32 GB SD card on Windows 10
Replies: 8
Views: 306

Re: Backing up 32 GB SD card on Windows 10

IMHO, it's better to back it up onto an SD card using Accessories/SD Card Copier.
Then , if the SD card fails, you just slip in the backup card and you're away again.

Having said that, I do a nightly backup of programs and data to Win 10 using WinSCP
by TideMan
Tue Aug 06, 2019 4:26 am
Forum: General discussion
Topic: What are some examples of commercial products using RPi?
Replies: 12
Views: 7786

Re: What are some examples of commercial products using RPi?

Raspberry Shake (seismometer) and Boom (infra sound)
https://raspberryshake.org/
by TideMan
Fri Oct 05, 2018 10:07 pm
Forum: General discussion
Topic: Turn off daylight saving
Replies: 12
Views: 1071

Re: Turn off daylight saving

In our timezone of UTC+12, forecasting tides is especially problematic because you can be blissfully unaware that your constituents are 12 hours out without realising it. It only changes high and low tide times by 25 minutes ( the primary M2 tide has a period of 12.42 hours). Such a time error is al...
by TideMan
Fri Oct 05, 2018 9:19 pm
Forum: General discussion
Topic: Turn off daylight saving
Replies: 12
Views: 1071

Re: Turn off daylight saving

Thanks Dougie.
That fixed it.
Simple really, when you know how.
by TideMan
Fri Oct 05, 2018 8:46 pm
Forum: General discussion
Topic: Turn off daylight saving
Replies: 12
Views: 1071

Turn off daylight saving

Is there any way to turn off daylight saving? In my zone (Pacific/Auckland) we are UTC+12, but during daylight saving that changes to UTC+13 which plays havoc with a dozen or so crontab jobs, as well as my weather stations. I'd like my time zone to be UTC+12 all year round. Is there any way to achie...
by TideMan
Thu Sep 06, 2018 8:51 pm
Forum: Troubleshooting
Topic: Can't connect to website via external IP
Replies: 4
Views: 336

Re: Can't connect to website via external IP

Sounds to me like a problem with your router.
To connect to your site using an external IP, the router must do what's called "hairpin routing".
Not all routers have this capability.
Maybe your router can do it, but not well.

Can you connect to your site from outside of your LAN?
by TideMan
Mon Jul 30, 2018 9:52 pm
Forum: General discussion
Topic: Dropbox_Uploader from php
Replies: 1
Views: 200

Re: Dropbox_Uploader from php [SOLVED]

I found the answer myself!! If you issue this command in php echo "User = " . trim(shell_exec('whoami')); it will tell you www-data. So this is the user you must execute under to register dropbox_uploader, first making /var/www writeable (this is where .dropbox_uploader is stored): sudo chmod 777 /v...
by TideMan
Sun Jul 29, 2018 11:49 pm
Forum: Troubleshooting
Topic: ssh connection without password
Replies: 8
Views: 451

Re: ssh connection without password

I use WinSCP for copying files to/from PC to RPi. You can use a script and run it on a schedule. Here is a typical script in a file called sync.txt: open pi:mypassword@192.168.1.13 cd /home/pi/Rain/RiccartonHagley synchronize remote close exit which you can execute from DOS using: "c:\Program Files ...
by TideMan
Sun Jul 29, 2018 9:42 pm
Forum: General discussion
Topic: Dropbox_Uploader from php
Replies: 1
Views: 200

Dropbox_Uploader from php

I want to execute dropbox_uploader from within a .php routine using exec: exec("/home/pi/BashFiles/dropbox_uploader.sh download /Public/Jul18log.txt Log.txt",$output,$result) Now, when I run dropbox_uploader the first time from ~/, it asks for my Dropbox authorisation number which it writes into ~/....
by TideMan
Mon Jul 23, 2018 10:27 pm
Forum: Networking and servers
Topic: mDNS with Win 10 1803
Replies: 2
Views: 1174

Re: mDNS with Win 10 1803

/etc/avahi/avahi-daemon.conf has both IPv4 and IPv6 enabled, so I don't think that's it.
Also, mDNS worked fine until the Win 10 upgrade, so it's likely something in Windows, not Raspbian.
by TideMan
Mon Jul 23, 2018 8:59 pm
Forum: Networking and servers
Topic: mDNS with Win 10 1803
Replies: 2
Views: 1174

mDNS with Win 10 1803

I run my RPis headless from a Win 10 machine using either VNC or PuTTY. Up until the latest Win 10 version (1803), I could refer to my RPis using name.local, having installed Bonjour on the PC. But since the latest version, this no longer works: ping web.local - could not find host ping -6 web.local...
by TideMan
Sun Jul 22, 2018 11:09 pm
Forum: Networking and servers
Topic: Static IP: router or dhcpdc.conf ?
Replies: 4
Views: 379

Static IP: router or dhcpdc.conf ?

My ISP just gave me a new router which makes setting static IPs on my LAN very straightforward. It offers a list of connected computers with their MAC addresses and you click on one and assign an IP address. To date, I've been editing dhcpcd.conf to get a static IP on my RPis. Which is preferable? S...
by TideMan
Wed Sep 27, 2017 3:01 am
Forum: Networking and servers
Topic: Trying to understand networking and its capabilities
Replies: 8
Views: 1460

Re: Trying to understand networking and its capabilities

Connect a separate HDMI cable from each RPi to separate ports on the smart TV, then use the TV's remote to switch between them. My Samsung smart TV then allows its remote to control each device. It does this using a facility called "anynet".
by TideMan
Thu Sep 21, 2017 11:32 pm
Forum: Beginners
Topic: Cmd to See Raspberry OS Version
Replies: 9
Views: 1369

Re: Cmd to See Raspberry OS Version

The trouble with burning a new SD is that you then have to go through and re-install all the programs that were running fine before. Oftentimes, you don't remember until something doesn't work. Then you realise it's because xyz needs to be re-installed (or even built from the tar ball). What a PITA!!
by TideMan
Fri Sep 08, 2017 3:41 am
Forum: Automation, sensing and robotics
Topic: Controlling RPi 3 from (really) far
Replies: 4
Views: 870

Re: Controlling RPi 3 from (really) far

DougieLawson wrote:
Thu Sep 07, 2017 9:59 pm
RealVNC is simple.
Are you implying, Dougie, that one can use RealVNC to connect to a remote machine via the Internet? Without using weaved or similar? If so, how?
by TideMan
Thu Sep 07, 2017 4:52 am
Forum: Advanced users
Topic: Raspberry Pi 2 B+ Internet Surfing Extremely Slow
Replies: 3
Views: 1171

Re: Raspberry Pi 2 B+ Internet Surfing Extremely Slow

Chromium, IceWeasel, Firefox, Epiphany. They're all hopelessly slow in my experience.
But text-based Lynx works OK, so it's probably a graphics issue.
by TideMan
Fri Aug 04, 2017 2:10 am
Forum: Automation, sensing and robotics
Topic: Connect rpi to matlab via wifi
Replies: 5
Views: 2483

Re: Connect rpi to matlab via wifi

Well, I bought a copy of Matlab for Windows on a PC because I use it for work, but on my RPis I use Octave, which is free.
Almost all Matlab scripts transfer seamlessly to Octave.
by TideMan
Mon Jun 12, 2017 10:03 am
Forum: Other programming languages
Topic: Why no PHP forum?
Replies: 20
Views: 3654

Re: Why no PHP forum?

Nor a Fortran forum, yet Fortran runs like a scalded cat on RPis, even an old 512 MB Model B.

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