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by Ronaldlees
Tue Nov 28, 2017 11:34 pm
Forum: General discussion
Topic: Buying More Than One Pi Zero
Replies: 24
Views: 13727

Re: Buying More Than One Pi Zero

I keep seeing ads from people who are selling multiple Pi Zeros in lots. The ads say they are made by Raspberry Pi Trading, Ltd, and they typically are priced at about $13. Are the ads legit?
by Ronaldlees
Tue Nov 28, 2017 10:56 pm
Forum: Advanced users
Topic: What happens to the Pi if I connect a 4.2V voltage source to its power input?
Replies: 5
Views: 700

Re: What happens to the Pi if I connect a 4.2V voltage source to its power input?

When back-feeding power thru the 3v3 GPIO - my keyboard, mouse, and WiFi dongle work at ~3.50 Volts, but stop working when I dial the voltage down to ~3.4V. I actually have one AP (access point) - working this way. I don't know what happens at lower voltages, less than 3v3 (probably just doesn't boo...
by Ronaldlees
Tue Nov 28, 2017 10:38 pm
Forum: Networking and servers
Topic: Pi almost entirely unable to run WordPress site
Replies: 7
Views: 2538

Re: Pi almost entirely unable to run WordPress site

Yeah - as has been pointed out already, you really have to watch the size of those photos. The network speed is one of the lesser abilities of the Pi (at least so far). So to run a WP site on a Pi you want to use pretty small, efficient graphics. My WP is based on a Pi2 with Hiawatha and SQLite3 on ...
by Ronaldlees
Tue Nov 28, 2017 10:27 pm
Forum: Automation, sensing and robotics
Topic: Hall Effect Sensor not Reading Fast Enough
Replies: 2
Views: 606

Re: Hall Effect Sensor not Reading Fast Enough

Perhaps this thread could shed some light:

viewtopic.php?t=26907

It seems the faster sample programs are using finely tuned assembler.
by Ronaldlees
Tue Nov 28, 2017 9:43 pm
Forum: General discussion
Topic: LM1084 power supply
Replies: 36
Views: 2823

Re: LM1084 power supply

Apart from Edison not inventing the light bulb (Swan did that) and in my opinion being a wazzock of the ninth order, I tend to agree with Broe23's sentiments. But I'm not going to admit that. It'd make me look like a wazzock. Never really thought about it. It seems that we tend to believe what we w...
by Ronaldlees
Sun Nov 26, 2017 1:28 pm
Forum: General discussion
Topic: SD cards - the Pi's greatest weakness
Replies: 89
Views: 8102

Re: SD cards - the Pi's greatest weakness

... What happens when the on-board memory dies or gets too old?? how do you replace it? What if you want to pay extra for super fast memory or want a huge amount to store media on? I say: SD cards - (one of) the Pi's greatest strengths An inspired design choice IMO. ... ++ Some of the Pi's competit...
by Ronaldlees
Sat Nov 25, 2017 7:26 pm
Forum: General programming discussion
Topic: Sending a digit via Bluetooth
Replies: 10
Views: 2227

Re: Sending a digit via Bluetooth

Is it really an HC-05? One poster has reported (possibly) getting HC-06 instead of HC-05 since the package is very close to identical, by mistake:

http://www.seeedstudio.com/forum/viewto ... =45&t=5817
by Ronaldlees
Sat Nov 25, 2017 7:07 pm
Forum: Off topic discussion
Topic: Mike OS on Raspberry Pi
Replies: 22
Views: 3372

Re: Mike OS on Raspberry Pi

What does MikeOS do? Internet? Running an old-time OS can be entertaining or challenging or both. I have used Lynx with DOS and an old DOS based TCP stack set up on a floppy disk, in order to surf the internet. It was a little primative, but (for a short time) - entertaining. Things do not need to b...
by Ronaldlees
Sat Nov 25, 2017 6:41 pm
Forum: Off topic discussion
Topic: 3D Printer
Replies: 70
Views: 21083

Re: 3D Printer

Can't find the MakerGear PLA online in the UK but lots of PLA is listed with MakerBot as one of the printers that can use it (dubious advertising maybe). Anyway I bought this stuff. https://www.amazon.co.uk/Filament-SUNLU-Dimensional-Accuracy-Printing/dp/B073PB9XWY/ref=sr_1_1?ie=UTF8&qid=1511627444...
by Ronaldlees
Sat Nov 25, 2017 4:09 pm
Forum: Off topic discussion
Topic: 3D Printer
Replies: 70
Views: 21083

Re: 3D Printer

PLA and ABS are the main filaments, and (as mentioned) - ABS (and Nylon) could have a heated bed for printing. I think that a heated bed should be on the "need to have" list. For decorative things, you'll likely use PLA, and for robotic things you'll likely use ABS, and for very fine/tough robotic t...
by Ronaldlees
Sat Nov 25, 2017 3:51 pm
Forum: Advanced users
Topic: Disable power management in Stretch
Replies: 12
Views: 33533

Re: Disable power management in Stretch

added to /etc/rc.local: iwconfig wlan0 power off resulted in my Stretch Pi3 onboard wifi power management being permanently off. For my robot, this reduces the tx excessive retries by a factor of 10, and incoming ping Request timeouts by a factor of 2. Linux RWPi 4.9.41-v7+ #1023 SMP Tue Aug 8 16:0...
by Ronaldlees
Sat Nov 25, 2017 3:42 pm
Forum: Beginners
Topic: Wifi query
Replies: 4
Views: 677

Re: Wifi query

Yeah - Wheezy is a bit long in the tooth. I no longer run it even on x86 platforms. Perhaps there have been improvements to the driver since then, or to the power saving code. Some other people have reported the same problem as you, and have indicated that the "fix" didn't work for them. Some of the...
by Ronaldlees
Fri Nov 24, 2017 3:52 pm
Forum: Networking and servers
Topic: Configuring multiple ip cameras
Replies: 2
Views: 1225

Re: Configuring multiple ip cameras

There are some applications that do this sort of thing. Zoneminder comes to mind. I think the problem is that the Raspberry's USB is not fast, so if you're connecting four USB cameras it could get bogged down. AFAIK, the Raspberry's ethernet is USB affiliated, so the same issue could affect IP camer...
by Ronaldlees
Fri Nov 24, 2017 3:38 pm
Forum: General discussion
Topic: How to communicate with Raspberry Pi without the Internet?
Replies: 16
Views: 1592

Re: How to communicate with Raspberry Pi without the Internet?

So, how to extend WiFi range without illegal enhancement?

- Use repeaters/mesh etc.
by Ronaldlees
Fri Nov 24, 2017 3:34 pm
Forum: General discussion
Topic: How to communicate with Raspberry Pi without the Internet?
Replies: 16
Views: 1592

Re: How to communicate with Raspberry Pi without the Internet?

broe23, Heeter loves to throw out there the fear that everything is illegal,... I presume you mean me. Well, Heater does not love to do any such thing. Please don't misrepresent what I say. I do from time to time point out that there are laws restricting what we can do with electro-magnetic radiati...
by Ronaldlees
Fri Nov 24, 2017 3:08 pm
Forum: General discussion
Topic: Most accurate gps chipset
Replies: 13
Views: 6314

Re: Most accurate gps chipset

I wonder if Galileo is possible yet with the Pi:

viewtopic.php?f=46&t=168473

viewtopic.php?f=46&t=177228

It was said to be pretty accurate.
by Ronaldlees
Thu Nov 23, 2017 3:18 pm
Forum: General discussion
Topic: TL-WN722N v2 - monitor mode + mfruba kernel problem
Replies: 8
Views: 6208

Re: TL-WN722N v2 - monitor mode + mfruba kernel problem

I think the OP meant the driver was the reason he can't run monitor mode. But once he gets an appropriate driver built, running monitor mode is easy, assuming it's legal in his country. AFAIK, it's always legal if used only with the user's own packets. IIRC correctly, something like this is needed: ...
by Ronaldlees
Mon Nov 06, 2017 7:19 pm
Forum: General discussion
Topic: Extending Wireless Range
Replies: 72
Views: 9178

Re: Extending Wireless Range

How is the house network laid out? Could you move the access point closer to the gargage, perhaps eliminating some interior walls in the process. Walls reduce range somewhat. Perhaps move the access point closer to a window, etc.
by Ronaldlees
Mon Nov 06, 2017 2:24 pm
Forum: General discussion
Topic: Some uSD failures could be caused by this ...
Replies: 3
Views: 471

Re: Some uSD failures could be caused by this ...

Broe23: Agreed that tweezers could be OK. Heater: I suppose that what I had could have been that rare flukey disk. On a sample of one, I can't say much. I'd applied only normal pressure with the pliers. The hairline crack was so thin that at first I thought it was just a scratch, but a second pliers...
by Ronaldlees
Sun Nov 05, 2017 11:19 pm
Forum: General discussion
Topic: Some uSD failures could be caused by this ...
Replies: 3
Views: 471

Some uSD failures could be caused by this ...

I mentioned recently, on one of the threads in this section, that I'd had only one uSD disk go bad out of around twenty or so that I'd been using over the past couple years. I should have knocked on wood, because I had one of them die today. It was after I tried to insert the uSD into the slot, near...
by Ronaldlees
Wed Oct 11, 2017 12:33 pm
Forum: General discussion
Topic: Most narrow keyboard available of any kind? My ideas so far.
Replies: 3
Views: 1276

Re: Most narrow keyboard available of any kind? My ideas so far.

I'm glad you found what you were looking for. The Pazzport size is already a little smaller than my old fingers can operate, so I'm not looking to go even smaller :-) But, I could envision a DIY keyboard that would be really small. It'd be just two pieces of tinned-hole prototype PCB board with litt...
by Ronaldlees
Wed Oct 11, 2017 12:16 pm
Forum: General discussion
Topic: Arduino or raspberry
Replies: 6
Views: 943

Re: Arduino or raspberry

I'm sure he's saying to just use the Node MCU (ESP8266) in combination with the Raspberry Pi. The ESP8266 is much closer to the Arduino world than the Pi world. Relative to the Arduino, it's a hopped up, faster, MCU board with more memory and built-in WiFi. I like the Particle Photon which is a slig...
by Ronaldlees
Tue Oct 10, 2017 9:01 pm
Forum: Off topic discussion
Topic: Adafruit buys Radio Shack! 8-o
Replies: 22
Views: 6070

Re: Adafruit buys Radio Shack! 8-o

Maybe Adafruit wants to test the waters for physical locations. Do they have any brick and mortar now? Anyway, according to the Wiki, RadioShack has only about 30 company stores that could be in the deal (I'd imagine). The other remaining 400+ stores were licensees and independently operated AFAIK. ...
by Ronaldlees
Tue Oct 10, 2017 1:31 pm
Forum: General discussion
Topic: Most narrow keyboard available of any kind? My ideas so far.
Replies: 3
Views: 1276

Re: Most narrow keyboard available of any kind? My ideas so far.

input you can give LOL. Well, I have a "pazzport sized" keyboard that is without bluetooth. I don't recommend non-bluetooth in a crowded area, or in an area with neighbors. Using a non-bt keyboard one day, my terminal was taken over and somebody (unknown) - was probing my subnet with the ping utili...
by Ronaldlees
Mon Oct 09, 2017 10:23 pm
Forum: General discussion
Topic: SD card permanently write protected???
Replies: 18
Views: 5364

Re: SD card permanently write protected???

There's not been much documented testing of this issue. It's likely that the reason - at least partly - is that these card's manufacturers are very tight lipped about the protocols and firmware. I guess that's due to the "S" in SD. If they gave away the game, they'd just have to sell "D" cards. Ther...

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