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by ab1jx
Mon Sep 02, 2019 2:37 am
Forum: General discussion
Topic: Be careful with Pi Zero and CSI slot
Replies: 40
Views: 11773

Re: Be careful with Pi Zero and CSI slot

If you look at the Molex PDF you can see the problem: Durability (mating cycles max) 20 That's from http://www.molex.com/webdocs/datasheets/pdf/en-us/0545482271_FFC_FPC_CONNECTORS.pdf A DIP or a DB25 would be more sturdy. That flexboard cable can't be flexed many times before the foil breaks either.
by ab1jx
Tue May 07, 2019 12:05 am
Forum: Troubleshooting
Topic: Have you looked at rtl_power?
Replies: 2
Views: 708

Re: Have you looked at rtl_power?

Take a look at https://sourceforge.net/p/fmplot/ I just wrote it for plotting the US FM broadcast band to find nrsc5 (AKA HD FM) stations. They're about twice as wide as traditional analog FM stations so they're fairly visible. It uses rtl_power to scan, formats the output and feeds ti to Gnuplot to...
by ab1jx
Sun May 05, 2019 3:34 am
Forum: General discussion
Topic: So, tried qt-dab yet?
Replies: 5
Views: 491

Re: So, tried qt-dab yet?

I listened a few minutes tonight and it was cutting out when I used the GUI, didn't happen with the bare command line program. The basic program is in C, the GUI is in Python. Too much of a performance penalty I guess. The GUI doesn't accomplish much in my case, the only HD station I've found isn't ...
by ab1jx
Fri May 03, 2019 3:18 pm
Forum: General discussion
Topic: So, tried qt-dab yet?
Replies: 5
Views: 491

Re: So, tried qt-dab yet?

There is a GUI for it, and supposedly an API for making your own. See https://github.com/cmnybo/nrsc5-gui What it shows depends on what the stations put on the air, it can do traffic and weather maps, album covers, but not here. I used fmfool http://www.fmfool.com/index.php?option=com_wrapper&Itemid...
by ab1jx
Thu May 02, 2019 11:28 pm
Forum: General discussion
Topic: So, tried qt-dab yet?
Replies: 5
Views: 491

Re: So, tried qt-dab yet?

So you can record to a wav file for an hour or so then chop it up like this in Audacity. You can see where the song starts and ends. It's clunky but it works. chopping.jpg This is a really old local rock station that's been around for 45 years or so, same frequency, they just added the digital stuff...
by ab1jx
Thu May 02, 2019 5:55 pm
Forum: General discussion
Topic: So, tried qt-dab yet?
Replies: 5
Views: 491

Re: So, tried qt-dab yet?

Yeah, OK, I got that working, just listened to something by Metalica. Hearing commercials though. It's (I guess) https://en.wikipedia.org/wiki/HD_Radio This has no GUI, there's an API to add one. It works strictly like rtl_fm where you type a frequency and program number. There's no easy way to brow...
by ab1jx
Wed May 01, 2019 2:58 am
Forum: General discussion
Topic: So, tried qt-dab yet?
Replies: 5
Views: 491

Re: So, tried qt-dab yet?

OK , there is no DAB in the US but it should work elsewhere. There was never frequency allocation for it here because there's too much other stuff. nodab.png If it works it should look more like the official screenshot: https://github.com/JvanKatwijk/qt-dab/blob/master/screenshot_qt-dab.png I'm tryi...
by ab1jx
Sat Apr 27, 2019 10:25 pm
Forum: General discussion
Topic: So, tried qt-dab yet?
Replies: 5
Views: 491

So, tried qt-dab yet?

I just got a new rtl2832 dongle in the mail and it says DAB among other things on it so I thought I'd give DAB a try. My first search took me to https://wiki.opendigitalradio.org/DAB_reception and then I went to https://github.com/JvanKatwijk/qt-dab After checking the debs with Synaptic of course, i...
by ab1jx
Sun Apr 21, 2019 1:37 pm
Forum: Troubleshooting
Topic: Does cloning an SD clone the Pi's MAC address?
Replies: 20
Views: 973

Re: Does cloning an SD clone the Pi's MAC address?

Piclone should have some boxes on the menu for "Is this a backup for this Raspberry? [Y/N]" "Is this a copy for a different machine? [Y/N]" (obviously mutually exclusive). Maybe I wrote "should" too. I meant should in the sense of "would be useful if". Since Piclone is the Rasbian debs and on the h...
by ab1jx
Sat Apr 20, 2019 4:51 pm
Forum: C/C++
Topic: Making sense of ADS-B checksums & bitfields
Replies: 52
Views: 5601

Re: Making sense of ADS-B checksums & bitfields

Yeah, the Zero doesn't really work that well for this. It had stopped working after a couple days so I repowered it and sshed to it. Now I've been waiting like 10 minutes for the first map to appear. It's running nginx so I went looking for comparisons between nginx and lighttpd, found this one http...
by ab1jx
Fri Apr 19, 2019 10:28 pm
Forum: Troubleshooting
Topic: My es2gears went black
Replies: 52
Views: 2998

Re: My es2gears went black

I just stumbled across this in a program I wrote 20 years ago or so, still works. Instead of using ** I did char *files[500]; It makes an array of (null) pointers, then you malloc space to assign to one when you want to use it. I had just switched from FreeBSD to OpenBSD and I managed to get Open to...
by ab1jx
Thu Apr 18, 2019 6:42 pm
Forum: Troubleshooting
Topic: Does cloning an SD clone the Pi's MAC address?
Replies: 20
Views: 973

Re: Does cloning an SD clone the Pi's MAC address?

Thanks, it's a possibility. Easier to just use a different wifi card. Hostname, yes, I always change those. Mostly without other tinkering that makes the hostname visible in DNS on your LAN or over wifi. On my phone I can get my Dump1090 page from my zero3 for example. ssh key, that's ssh-keygen It'...
by ab1jx
Thu Apr 18, 2019 5:34 pm
Forum: Troubleshooting
Topic: Does cloning an SD clone the Pi's MAC address?
Replies: 20
Views: 973

Re: Does cloning an SD clone the Pi's MAC address?

They locked up the Github conversation. I'm thinking Clonezilla might be better to use https://clonezilla.org/ but I don't know yet about what non-disk stuff it handles like UUIDs and ssh keys. It's in Debian's debs, haven't checked Raspbian's. It attempts to do what Ghost can do, it does deployment...
by ab1jx
Thu Apr 18, 2019 3:20 pm
Forum: Troubleshooting
Topic: Does cloning an SD clone the Pi's MAC address?
Replies: 20
Views: 973

Re: Does cloning an SD clone the Pi's MAC address?

So I answered: Well, yes, if I cloned an SD with dd I might expect that to happen. But since Piclone has the option of generating new DUIDs (or UUIDs, or whatever else you want to call them, I think they're silly), I was hoping you might add that option for this. It becomes a political problem of wh...
by ab1jx
Thu Apr 18, 2019 1:45 pm
Forum: Troubleshooting
Topic: Does cloning an SD clone the Pi's MAC address?
Replies: 20
Views: 973

Re: Does cloning an SD clone the Pi's MAC address?

Well, that's a drag The purpose of the SD card cloner, as the name suggests, is to completely copy the original card; to create a clone for backup purposes. This may well lead to problems if you try and run 2 Pis with identical cards on the same network, but equally it may well lead to problems if w...
by ab1jx
Thu Apr 18, 2019 1:15 pm
Forum: Graphics programming
Topic: SPi Display Questions?
Replies: 22
Views: 3164

Re: SPi Display Questions?

I would suggest looking at the link Paeryn posted above https://www.raspberrypi.org/documentation/hardware/raspberrypi/dpi/README.md I almost never re-read documentation so I didn't know there was such a thing, You shouldn't need to bit bang except as a test. I have an old Adafruit PiTFT https://www...
by ab1jx
Thu Apr 18, 2019 8:11 am
Forum: Graphics programming
Topic: SPi Display Questions?
Replies: 22
Views: 3164

Re: SPi Display Questions?

Two 40 pin headers and short length of 40 pin ribbon ... problem solved :-) Any old IDE cable is 40 pin and correct but may be too long to drive. You can cut that stuff with scissors or tin snips and put the connector back on using a vise to keep everything parallel. You can't turn it around though...
by ab1jx
Thu Apr 18, 2019 5:47 am
Forum: Graphics programming
Topic: SPi Display Questions?
Replies: 22
Views: 3164

Re: SPi Display Questions?

You can get a pretty wide variety (this is from DigiKey) but I thought somebody had a double (back to back) socket. That would plug this display right onto a Pi.
sqconnectors.jpg
sqconnectors.jpg (143.24 KiB) Viewed 2493 times
https://www.digikey.com/en/resources/co ... connectors
by ab1jx
Thu Apr 18, 2019 5:03 am
Forum: Graphics programming
Topic: SPi Display Questions?
Replies: 22
Views: 3164

Re: SPi Display Questions?

It finally came yesterday, and if they'd been clearer what they meant about the pins not being directly compatible with a Pi i might be ready for it. Instead, after a long wait (weeks), now I have to order something else and wait again. The display board has 40 pins sticking out, like a Pi has 40 pi...
by ab1jx
Wed Apr 17, 2019 11:21 am
Forum: C/C++
Topic: Making sense of ADS-B checksums & bitfields
Replies: 52
Views: 5601

Re: Making sense of ADS-B checksums & bitfields

Hi ab1jx, I've just had a look back at my installation notes and I'm NOT using the internal webserver but am using lighttpd on the pi. Sorry for leading you down the garden path! Dave Oh, OK, I'm using a different fork. git clone https://github.com/mutability/dump1090.git I mostly wanted to get awa...
by ab1jx
Wed Apr 17, 2019 3:23 am
Forum: Troubleshooting
Topic: Does cloning an SD clone the Pi's MAC address?
Replies: 20
Views: 973

Re: Does cloning an SD clone the Pi's MAC address?

Im sure i have come across a Pi 'How to' that details a method of specifying the mac addy to use, of course i have failed in my google-fu to find it to link .. I can only assume that if my recall is correct and such a 'fix' is Pi applicable, Then in such a case where a user specified Mac addy is ap...
by ab1jx
Wed Apr 17, 2019 3:17 am
Forum: C/C++
Topic: Making sense of ADS-B checksums & bitfields
Replies: 52
Views: 5601

Re: Making sense of ADS-B checksums & bitfields

Sounds like https://github.com/mutability/dump1090/issues/196 the developer doesn't want people to use that (internal webserver) option. What version are you using? I've got v1.15-dev-334-g0ec2dd8
by ab1jx
Wed Apr 17, 2019 2:27 am
Forum: Troubleshooting
Topic: Does cloning an SD clone the Pi's MAC address?
Replies: 20
Views: 973

Re: Does cloning an SD clone the Pi's MAC address?

Well, I didn't tell piclone what to copy or not, it just did everything. I wonder if the people who maintain piclone (in the Raspbian debs) should adjust it. It lives at https://github.com/raspberrypi-ui/piclone/archive/master.zip maybe I should file an issue there. I don't really like ipv6, try not...
by ab1jx
Wed Apr 17, 2019 2:16 am
Forum: C/C++
Topic: Making sense of ADS-B checksums & bitfields
Replies: 52
Views: 5601

Re: Making sense of ADS-B checksums & bitfields

Hi ab1jx, If you ever do find a way of getting a system to cache the map tiles at the viewing end I would be most interested - a truly portable/isolated visual ADSB receiving station :-) Dave I haven't a clue really. There's a MapProxy which I think is in the debs. Mostly a bunch of Python stuff, I...

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