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by Ronaldlees
Mon Jul 02, 2018 3:56 pm
Forum: Off topic discussion
Topic: Does VPN really help for Internet Privacy?
Replies: 18
Views: 1220

Re: Does VPN really help for Internet Privacy?

There are three pieces that need to work: - quantum memory (storage of qubits) - quantum communication (transmission of qubits) - quantum computing (manipulation of qubits) Delving into the memory and communication parts of the puzzle gives more insight than just a general look at "quantum computing".
by Ronaldlees
Mon Jul 02, 2018 1:01 pm
Forum: Off topic discussion
Topic: Does VPN really help for Internet Privacy?
Replies: 18
Views: 1220

Re: Does VPN really help for Internet Privacy?

Ronaldlees, I can't make out what you mean to say in the above post. Except, you are not a physicist, you do not know what quantum computing capabilities any companies may have actually is, and you cannot point us to anything that might back your assertion that " privacy is toast" because of the us...
by Ronaldlees
Sun Jul 01, 2018 3:51 pm
Forum: Teaching and learning resources
Topic: Using R with the Pi
Replies: 8
Views: 26816

Re: Using R with the Pi

wardster41 wrote:
Sat Jun 30, 2018 10:04 pm

... I have been able to load a version of R using the Cantor interface, but ...
Thanks for the post. Wish this forum had a "thanks" button. Would save space on the forum database. Anyway, you're right - would be great complement.
by Ronaldlees
Sun Jul 01, 2018 3:41 pm
Forum: Automation, sensing and robotics
Topic: Position Triangulation
Replies: 21
Views: 583

Re: Position Triangulation

Well, GPS itself is pretty inaccurate at this level. When dealing with ranges of a few feet, it's gonna be unpredictable. That's probably why the stores rely on OpenCV style facial recognition, IR photon emitters, and such, rather than something like GPS, which most folks would have in their cell ph...
by Ronaldlees
Sun Jul 01, 2018 3:27 pm
Forum: Off topic discussion
Topic: Does VPN really help for Internet Privacy?
Replies: 18
Views: 1220

Re: Does VPN really help for Internet Privacy?

However; I think quantum computers are now in use by multiple big entities around the world, and (from them anyway) - privacy is toast. What's your source of information for that assertion? Practical quantum computers are still a pipe dream, regardless of IBM's current public demonstration. If Cont...
by Ronaldlees
Sun Jul 01, 2018 3:16 pm
Forum: Automation, sensing and robotics
Topic: Position Triangulation
Replies: 21
Views: 583

Re: Position Triangulation

BTW: Welcome to the forum!
by Ronaldlees
Sun Jul 01, 2018 3:11 pm
Forum: Automation, sensing and robotics
Topic: Position Triangulation
Replies: 21
Views: 583

Re: Position Triangulation

You could do as the department stores do when they zero in on a customer. Use OpenCV, and paint each car a different bright color (the department stores use facial recognition, but that's not needed here). Then program your OpenCV to recognize the bright color and register a position. You might be a...
by Ronaldlees
Sat Jun 30, 2018 6:01 pm
Forum: Beginners
Topic: Reduce SD Card Partition for backup
Replies: 7
Views: 169

Re: Reduce SD Card Partition for backup

I tried to delete the topic but you replied faster than I could get to it. I did a search (something I should have done prior to posting) and found this topic: https://www.raspberrypi.org/forums/viewtopic.php?t=60161 I believe it might be better for me to just start from scratch and move everything...
by Ronaldlees
Sat Jun 30, 2018 5:52 pm
Forum: Beginners
Topic: Reduce SD Card Partition for backup
Replies: 7
Views: 169

Re: Reduce SD Card Partition for backup

I don't think partition shrinking is in the cards. The shrinker would need to move all of your files within the partition, before it could shrink. I think Windows is equipped to do this, but most OSS systems probably not. There are utilities to shrink *file systems* in LInux, but I haven't used them...
by Ronaldlees
Sat Jun 30, 2018 5:45 pm
Forum: Off topic discussion
Topic: Does VPN really help for Internet Privacy?
Replies: 18
Views: 1220

Re: Does VPN really help for Internet Privacy?

6) After all that you are connected, through a VPN, to the web site of your choice. Say, raspberrypi.org. That's great and all but said website then blows all your cover by immediately shouting to the world, google analytics, facebook, gravatar, etc that you have connected, when and for how long an...
by Ronaldlees
Fri Jun 29, 2018 6:57 pm
Forum: General discussion
Topic: Need help with WiFi Networking
Replies: 1
Views: 74

Re: Need help with WiFi Networking

It looks like your image was set up to use wpa_supplicant. So, you can run wpa_supplicant in manual mode with the "-DD" (or is that -dd?) switch to enable debugging, and maybe see what's wrong. I'd guess your wpa_supplicant.conf is incorrect.
by Ronaldlees
Fri Jun 29, 2018 6:11 pm
Forum: Automation, sensing and robotics
Topic: Cheap USB temperature sensors
Replies: 6
Views: 398

Re: Cheap USB temperature sensors

What a strange curve that left one is! I might trust the smooth curve, but the funky one - no way! I think its firmware needs touch up.
by Ronaldlees
Fri Jun 29, 2018 5:59 pm
Forum: Off topic discussion
Topic: Does VPN really help for Internet Privacy?
Replies: 18
Views: 1220

Re: Does VPN really help for Internet Privacy?

It depends who you are most worried about. IMO, if you are worried about the fellow patrons at a coffee shop, then yes - it probably adds quite a bit of privacy. If you are worried about governmental agencies, then in some situations your privacy could be lower. This is because, while the VPN shield...
by Ronaldlees
Sat Apr 21, 2018 8:05 pm
Forum: Automation, sensing and robotics
Topic: Integrating ID with single-chip radar
Replies: 3
Views: 383

Re: Integrating ID with single-chip radar

I'm not an expert in radar, so this is a hobbyist's opinion, powered by being a boating/marine enthusiasts and ham radio guy. The ideas I'm tossing out here are probably worth what you paid for them ($0) :-) But, here goes anyway ... The earlier automotive range finding chip radars (probably the onl...
by Ronaldlees
Sat Apr 21, 2018 6:58 pm
Forum: General discussion
Topic: finding older model RPi on the used market
Replies: 6
Views: 506

Re: finding older model RPi on the used market

I find it odd that someone would balk at paying $35 for a Pi2B, Pi3B, or Pi3B+, or even $20 for an A+ when the original kickstarter for Raspberry Shake was over $100, and the Raspberry Boom is more like $200. If you can afford the Raspberry Shake, the Pi to go with it shouldn't be an issue. I guess...
by Ronaldlees
Fri Apr 20, 2018 9:53 pm
Forum: Beginners
Topic: Which browser do you use ?
Replies: 20
Views: 741

Re: Which browser do you use ?

My Pi2 boards seem too sluggish when using anything other than Netsurf, so that's what I use. Once in a while, if I need javascript, I use the built in Rasbian browser (can't remember its name). It gets the job done, but not blisteringly quickly. On the faster boards, I use Vivaldi (excellent and sp...
by Ronaldlees
Fri Apr 20, 2018 9:34 pm
Forum: General discussion
Topic: USB Ethernet adapters
Replies: 1
Views: 721

Re: USB Ethernet adapters

Welcome to the RPi forums! It should be the same as with any other ethernet adapter, i.e. something like: Note that the Pi's built-in adapter is usually ue0 (usb ethernet adapter 0). So for a temporary command line setup, maybe you could use: ifconfig ue1 inet 192.168.1.16 netmask 255.255.255.0 broa...
by Ronaldlees
Fri Apr 20, 2018 9:09 pm
Forum: Automation, sensing and robotics
Topic: 4-20mA transducer and Receiver control by IOT based application
Replies: 2
Views: 258

Re: 4-20mA transducer and Receiver control by IOT based application

I used to work with that kind of stuff a zillion years ago. I'm not (especially 30 years later) an expert in this field, so consult the web or an expert friend for a final opinion. Anyway, here's a hobbyist's opinion: I think you need to know the sum of all the voltage drops in your loop, and have a...
by Ronaldlees
Fri Apr 20, 2018 8:50 pm
Forum: General discussion
Topic: finding older model RPi on the used market
Replies: 6
Views: 506

Re: finding older model RPi on the used market

I think part of it is that a large number of projects (including some commercial) use the Pi2 version 1 with the original SoC, and don't want to upgrade software for the newer boards and SoC (version 2). I'm in that camp myself, because I have a special build for the Cirrus audio board. So, occasion...
by Ronaldlees
Mon Apr 02, 2018 2:34 pm
Forum: Automation, sensing and robotics
Topic: Integrating ID with single-chip radar
Replies: 3
Views: 383

Re: Integrating ID with single-chip radar

How difficult is it to detect radar signals? They're very short pulses, and detection may not be cheap enough. So, I'd think about light wavelengths instead. How many animals? How big are they? If they wore flags in an assortment of colors, you could use an Opencv cam and some software to pick them ...
by Ronaldlees
Mon Apr 02, 2018 1:57 pm
Forum: Other projects
Topic: rtl_fm SDR dongle Scanner
Replies: 3
Views: 423

Re: rtl_fm SDR dongle Scanner

The reason I asked about the squelch level is because in the case of FM - the squelch often breaks open for a short bit when a weaker carrier starts, but then it closes again. So, you'd move the squelch around to see if that helps, i.e. not set to 70, but try 20,30,40,50,60,70,80,90. The break-open ...
by Ronaldlees
Mon Apr 02, 2018 1:35 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: nRF24L01 - GPIO
Replies: 1
Views: 246

Re: nRF24L01 - GPIO

The nRF2401L is not really WiFi. It doesn't do frequency hopping or any spread spectrum. Anyway - the antenna probably cannot be connected with ribbon cable - it would be inefficient. Most of the cables found (for example, on Amazon) for this purpose are fairly high loss (RG174, RG58, etc). There ar...
by Ronaldlees
Thu Mar 22, 2018 11:56 pm
Forum: Networking and servers
Topic: Raspberry pi 3 as AP using strictly wifi
Replies: 4
Views: 481

Re: Raspberry pi 3 as AP using strictly wifi

OK, I understand what you want. The instructions that you followed should be OK. But, for some reason the hostapd software is not running or is not configured correctly. If the "hostapd software + driver/interface + WiFi dongle" is operating properly, you should see the access point when you search ...
by Ronaldlees
Mon Mar 19, 2018 2:49 pm
Forum: Off topic discussion
Topic: What was your 1st game?
Replies: 43
Views: 7713

Re: What was your 1st game?

Heater wrote:
Thu Mar 15, 2018 12:53 am
Oh boy, does the PONG thing count?

If I understand correctly there was no computer in there. Only logic chips.
Yeah - also the first machine I saw and played in early seventies 72? or there abouts. I've never played a game on the Pi. Way too pragmatic these days.
by Ronaldlees
Mon Mar 19, 2018 2:28 pm
Forum: Automation, sensing and robotics
Topic: Linux Development Board which supports two cameras
Replies: 3
Views: 309

Re: Linux Development Board which supports two cameras

I was looking for similar board, and probably the cmio3 + cm3 is best bet (approx $114 + $54 for cm3 ... approx $114 + $28 for cm3 lite). I think the cm3 lite has both camera slots (one 4 lane, one 2 lane), so might be cheaper option (mods can correct me on this). Only other alternative in range tha...

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