Search found 29 matches
- Sun Nov 12, 2017 2:06 am
- Forum: Advanced users
- Topic: Solutions needed for having a RasPi serve an IP address
- Replies: 3
- Views: 782
Re: Solutions needed for having a RasPi serve an IP address
I'll second the recommendation to do a search on "DHCP server for Raspberry Pi", and toss-in this link to the datasheet for the optoisolator you were inquiring about: http://www.farnell.com/datasheets/20079 ... 1509766665
- Sun Nov 12, 2017 1:31 am
- Forum: Beginners
- Topic: GPIO Pin Numbering
- Replies: 21
- Views: 39607
Re: GPIO Pin Numbering
I favor the Element14 graphic, myself, and have that printed out and in one of my reference notebooks, now. Thanks for that one--I missed seeing it when I was on their site. I did think that this might be worth mentioning: Over at http://rasp.io/portsplus/ they sell a small scrap of PC board that yo...
- Wed Nov 08, 2017 9:53 am
- Forum: General discussion
- Topic: Extending Wireless Range
- Replies: 76
- Views: 13808
Re: Extending Wireless Range
Noted. Accidents *do* occur frequently.Pithagoros wrote: ↑Wed Nov 08, 2017 9:41 amor even necessarily intentional about placing the Pi antenna within 1/4λ of a reflector.
- Wed Nov 08, 2017 9:14 am
- Forum: General discussion
- Topic: A bit of my Pi fell off!
- Replies: 5
- Views: 1128
Re: A bit of my Pi fell off!
Not a problem. I had one pop off at my desk, also, and it was a trivial repair.
- Wed Nov 08, 2017 9:12 am
- Forum: General discussion
- Topic: Extending Wireless Range
- Replies: 76
- Views: 13808
Re: Extending Wireless Range
In short, the more directional your antenna (higher gain) the less power you are allowed to pump into it. Your proposition being that the nodes being discussed exceed 4W power (or even one Watt) at the radiating element? With higher gain directive antennas, the FCC relaxes EIRP limitations. When us...
- Tue Nov 07, 2017 11:00 pm
- Forum: General discussion
- Topic: Stretch for PCs?
- Replies: 5
- Views: 1036
Re: Stretch for PCs?
Ah. I did not realize that the DE was the focus. My apologies.
- Tue Nov 07, 2017 10:54 pm
- Forum: General discussion
- Topic: How to control AC 230V lights
- Replies: 5
- Views: 2447
Re: How to control AC 230V lights
One might simplify the implementation using phase-control SSRs....
https://www.google.com/search?q=phase-c ... ontrol+ssr
https://www.google.com/search?q=phase-c ... ontrol+ssr
- Tue Nov 07, 2017 10:50 pm
- Forum: General discussion
- Topic: A bit of my Pi fell off!
- Replies: 5
- Views: 1128
Re: A bit of my Pi fell off!
If you need the WiFi/BT, you can re-solder the aerial to the board, if you mind that you orient the dotted-end toward the corresponding dot on the PC Board.
- Tue Nov 07, 2017 10:37 pm
- Forum: General discussion
- Topic: Extending Wireless Range
- Replies: 76
- Views: 13808
Re: Extending Wireless Range
Sure...the relevant authorities are very unlikely to come looking for someone who makes the sort of modifications under discussion. They are also unlikely to stumble across it. So the chance of getting caught is very low. Well, since you and I live in California, USA, that's probably the case. It's...
- Tue Nov 07, 2017 2:35 am
- Forum: Gaming
- Topic: ZXBaremulator v2.0
- Replies: 3
- Views: 1436
Re: ZXBaremulator v2.0
Geeze!
I read Spanish well enough, but it has been a while. I read all the way through the top half of the page, and decided that this would be interesting to tinker with a bit, then discovered the lower English half of the page....LOL.
I read Spanish well enough, but it has been a while. I read all the way through the top half of the page, and decided that this would be interesting to tinker with a bit, then discovered the lower English half of the page....LOL.
- Tue Nov 07, 2017 2:03 am
- Forum: General discussion
- Topic: USB Power Supply reading 0 volts
- Replies: 7
- Views: 1423
Re: USB Power Supply reading 0 volts
Ok.....I forget that not everyone lives for flux smoke at their desk.


- Tue Nov 07, 2017 2:01 am
- Forum: General discussion
- Topic: Stretch for PCs?
- Replies: 5
- Views: 1036
- Mon Nov 06, 2017 9:12 pm
- Forum: General discussion
- Topic: Extending Wireless Range
- Replies: 76
- Views: 13808
Re: Extending Wireless Range
For those interested in the certification application documents, please refer to the following link:
https://apps.fcc.gov/oetcf/eas/reports/ ... ABCB-RPI32
https://apps.fcc.gov/oetcf/eas/reports/ ... ABCB-RPI32
- Mon Nov 06, 2017 6:10 am
- Forum: General discussion
- Topic: STICKY: Introduce yourself!
- Replies: 3887
- Views: 301593
Re: STICKY: Introduce yourself!
Greetings. I'm Allan, living in Southern California, USA. I'm a 1980's-era UNIX user, who migrated to CP/M, then to Digital Research DOS on the 8088/86 platform; and have been a happy Linux user since Mother's Day of 1995. Moving away from RH at release 8.0, I've been using Debian as my main DTOS, w...
- Mon Nov 06, 2017 3:52 am
- Forum: General discussion
- Topic: USB Power Supply reading 0 volts
- Replies: 7
- Views: 1423
Re: USB Power Supply reading 0 volts
Between the 5v rail that feeds the GPIO header pins among other stuff and the USB socket 5v there's a AP2553 current-limited switch. If it bears out that this is the problem component, obtaining a replacement isn't prohibitively expensive (£0.37 according to my search): https://www.mouser.com/Produ...
- Mon Nov 06, 2017 2:53 am
- Forum: General discussion
- Topic: Extending Wireless Range
- Replies: 76
- Views: 13808
Re: Extending Wireless Range
Also worthy of consideration: https://www.dxzone.com/catalog/Antennas/WiFi/
- Sun Nov 05, 2017 10:02 pm
- Forum: Other projects
- Topic: Isolating a Pi 3 for Security / Malware Research
- Replies: 7
- Views: 2217
Re: Isolating a Pi 3 for Security / Malware Research
Fastest way to disable both WiFi and BT is to remove the 0Ω resistor on the bottom side of the RPi3B circuit board, near pin 1 of the GPIO header. https://drive.google.com/file/d/0B4ucx1mQB04AWUJLZVQ3dHFJMjA/view?usp=sharing https://drive.google.com/file/d/0B4ucx1mQB04AWUJLZVQ3dHFJMjA/view?usp=shari...
- Sat Nov 04, 2017 9:07 pm
- Forum: Advanced users
- Topic: How do i disable micro-usb ports
- Replies: 7
- Views: 2057
Re: How do i disable micro-usb ports
This is why I pointed out that I was working with the Pi3. I was framing the context of the proposed hardware modification, in that it works quite well on the 3, yet further investigation would be required to see if the relevant +5VDC trace is accessible for cutting and shunting-off to the output co...
- Sat Nov 04, 2017 6:33 pm
- Forum: General discussion
- Topic: Raspbian with Read-only Root
- Replies: 195
- Views: 112488
Re: Raspbian with Read-only Root
Interesting. I'll definitely look at this in depth to see if it is appropriate for my some of my use cases.
Thank you for letting us know about this.
Thank you for letting us know about this.
- Sat Nov 04, 2017 10:20 am
- Forum: Troubleshooting
- Topic: vcgencmd options list
- Replies: 8
- Views: 23405
Re: vcgencmd options list
(grin) I have to dig mine out...did find all my Wirth books and a copy of The Cathedral and the Bazaar, though. Funny how things like that get put away and "lost" after a few moves.SteveSpencer wrote: ↑Fri Jul 19, 2013 2:54 pmI still have my copy of Kernighan and Ritchie, first version, none of your namby-pamby ANSI rubbish...
- Fri Nov 03, 2017 10:24 pm
- Forum: Advanced users
- Topic: How do i disable micro-usb ports
- Replies: 7
- Views: 2057
Re: How do i disable micro-usb ports
This appears not to be the case with the Pi3, which is what I'm working with in the RPi pecking order, as the 5VDC at the GPIO header is supplying 5VDC any time the Pi3 is connected to the power supply, whereas the 5VDC at the USB ports goes dead when the board is halted at the console session, or s...
- Fri Nov 03, 2017 1:56 am
- Forum: Advanced users
- Topic: How do i disable micro-usb ports
- Replies: 7
- Views: 2057
Re: How do i disable micro-usb ports
In theory, and I say that because I don't have a Zero in hand, one could cut the +5V trace to the MicroUSB port and bridge the gap with a very small SSR, and control said SSR via a GPIO pin; however, though I have done similarly with other development boards, and it's not a big deal, you may not wan...
- Fri Nov 03, 2017 1:49 am
- Forum: Advanced users
- Topic: Who to contact about ordering boards with codecs unlocked?
- Replies: 15
- Views: 2461
Re: Who to contact about ordering boards with codecs unlocked?
There is a time limit on patents....normally 17 years in the US.
- Thu Nov 02, 2017 8:37 am
- Forum: Raspberry Pi OS
- Topic: [FIXED] Stretch lacks proper GPU support
- Replies: 7
- Views: 2105
- Sat Oct 28, 2017 8:30 pm
- Forum: General discussion
- Topic: Raspbian with Read-only Root
- Replies: 195
- Views: 112488
Re: Raspbian with Read-only Root
Thanks for the reply, Heater. I'm one of those guys who has never used windows or Mac, sticking with Red Hat and Debian, for the most part; but have only just now started looking at the Pi for projects that PIC or Atmel can't handle. It seems that--exclusive of it being an ARM architecture--I can ap...