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by gatorback
Sat Mar 04, 2017 1:20 am
Forum: Beginners
Topic: Putty network error: connection refused
Replies: 5
Views: 5316

Re: Putty network error: connection refused

raspi-config => advanced options => select ssh: enable ssh server
by gatorback
Thu Apr 07, 2016 1:22 am
Forum: Pidora / Fedora
Topic: Extend root filesystem using CLI parted & resize2fs
Replies: 14
Views: 175721

Re: Extend root filesystem using CLI parted & resize2fs

sudo raspi-config --expand-rootfs then reboot. Verifcation: sudo fdisk /dev/mmcblk0 Welcome to fdisk (util-linux 2.25.2). Changes will remain in memory only, until you decide to write them. Be careful before using the write command. Command (m for help): p Disk /dev/mmcblk0: 7.4 GiB, 7946108928 byt...
by gatorback
Wed Apr 06, 2016 4:33 am
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Interfacing a Pulse oximeter with a RPI
Replies: 27
Views: 9274

Re: Interfacing a Pulse oximeter with a RPI

[quote="Charles Gwellem"] [email protected] ~ $ python puls.py 0x78 0x78 0x78 0x72 0x6a 0x5f 0x53 0x45 0x38 0x31 0x33 0x40 0x56 0x73 0x92 0xb3 0xd2 0xeb 0xf0 0xf0 [email protected] ~ $ python puls.py Observations: 1) There are two serial port communications protocols: one at 4800 baud and the other at 960...
by gatorback
Sun Mar 27, 2016 4:01 am
Forum: Networking and servers
Topic: Sharing Laptop's Wifi (internet) to rPi (ethernet)
Replies: 4
Views: 1682

Re: Sharing Laptop's Wifi (internet) to rPi (ethernet)

I was hoping to find a configuration procedure where I could connect the Win10 laptop's wireless adapter to Starbucks wifi and bridge the wired LAN adapter to the wireless adapter so that when the rPi is plugged in, the Starbucks wifi would assign the rPi a LAN IP address.
by gatorback
Sun Mar 27, 2016 3:29 am
Forum: Advanced users
Topic: Does Matlab support package work with Raspberry Pi 3 Model B
Replies: 10
Views: 5339

Re: Does Matlab support package work with Raspberry Pi 3 Mod

It would be interesting to understand why it is not compatible with MATLAB and yet compatible with SIMULINK. @Sebk911: what troubleshooting have you done to narrow down the issue? I seem to remember the need to put a '.' after the rPi hostname. Did you follow the Mathworks setup procedure and succes...
by gatorback
Thu Mar 10, 2016 12:41 am
Forum: General discussion
Topic: rPi2: Case + Display + Pin Access
Replies: 2
Views: 752

rPi2: Case + Display + Pin Access

Is there a case / display pair for the rPi2 that will allow wiring into the I/O pins? My search (Google / AMZN) was not fruitful. Thanks
by gatorback
Thu Mar 03, 2016 4:22 pm
Forum: Networking and servers
Topic: Sharing Laptop's Wifi (internet) to rPi (ethernet)
Replies: 4
Views: 1682

Sharing Laptop's Wifi (internet) to rPi (ethernet)

BACKGROUND \ CONTEXT ====================== I am frequently in public wifi environments (hotels, coffee shops, etc.): SSH network access to the Pi via Public wifi would be impractical because the SSID has to be known before and added to the configuration file before arriving. Windows 10 and windows ...
by gatorback
Thu Mar 03, 2016 2:52 pm
Forum: General programming discussion
Topic: MATLAB \ Simulink
Replies: 3
Views: 782

Re: MATLAB \ Simulink

And MATLAB/Simulink certainly isn't cheap! I use it every other day at work and we had to pay £20,000 for a license for a single toolbox. Agreed. A professional license is pricey because Mathworks has a significant amount of labor overhead and its revenue model targets professional users. On the ot...
by gatorback
Thu Mar 03, 2016 4:32 am
Forum: Automation, sensing and robotics
Topic: Conditional configuration of Ethernet
Replies: 0
Views: 308

Conditional configuration of Ethernet

I would to configure the Ethernet port to behave as follows: 1) check via DHCP if connected to router and receive LAN IP assignment 2) fallback to IP=192.168.1.20 GATEWAY=192.168.1.88 when directly connected to laptop Ethernet port. QUESTIONS a) Is there an example of where this has already been don...
by gatorback
Thu Mar 03, 2016 4:21 am
Forum: Bare metal, Assembly language
Topic: Piping serial over USB to RXD0
Replies: 1
Views: 610

Piping serial over USB to RXD0

I am wondering if it is possible to ==PIPE==> the sensor data as shown:

/dev/ttyUSB0 ==PIPE==> RXD0

Does TXD0/RXD0 have an address similar to dev/tty*?

The bigger picture is:

Sensor => TTL to USB =>/dev/ttyUSB0 ==PIPE==> RXD0 => Software Package
by gatorback
Thu Mar 03, 2016 12:44 am
Forum: General discussion
Topic: Anyone got any advice on running a Code Club?
Replies: 13
Views: 5250

Re: Anyone got any advice on running a Code Club?

If you have access to Simulink ($100), I suggest that try running the youtube demos for students to inspire them. The future is bright for the next generation if they choose to make it so.
by gatorback
Wed Mar 02, 2016 7:11 pm
Forum: General programming discussion
Topic: MATLAB \ Simulink
Replies: 3
Views: 782

MATLAB \ Simulink

Given that Wolfram has a programming discussion group, what is the correct way of requesting a SIMULINK \ MATLAB discussion group? I am looking forward to having a playground to interact with the other kids.
by gatorback
Wed Mar 02, 2016 5:19 pm
Forum: Compute Module
Topic: Compute module 3 details?
Replies: 40
Views: 17194

Re: Compute module 3 details?

I am pleased to see a CM3 is en route because the current 4GB is not enough for my application (8 needed), unless serious amount so man hours were used to strip and compact the distro. That being said, I would NOT ask for confirmation from those 'in the know' what the size of the NAND flash memory w...
by gatorback
Wed Mar 02, 2016 4:46 pm
Forum: Automation, sensing and robotics
Topic: rPi Drone using Turnigy SK450 + KK2 + sensors
Replies: 9
Views: 3906

Re: rPi Drone using Turnigy SK450 + KK2 + sensors

For those following this thread, Simulink is $100 for Student / non-commercial.

Simulink is not difficult, but I suspect that it lends itself to those with a strong engineering chops and is not for the average.
by gatorback
Sun Sep 20, 2015 11:16 pm
Forum: General discussion
Topic: Shield Compatibility between models
Replies: 4
Views: 1495

Re: Shield Compatibility between models

Nice work. This community is truly special :)
by gatorback
Sat Sep 19, 2015 2:27 pm
Forum: General discussion
Topic: Shield Compatibility between models
Replies: 4
Views: 1495

Shield Compatibility between models

I thought it might be useful to community members if a line item were added to the Wikipedia specs to document details so that one can determine if a shield from another model will work on another (perhaps this is not possible). https://en.wikipedia.org/wiki/Raspberry_Pi#Specifications I started by ...
by gatorback
Sun May 31, 2015 11:16 pm
Forum: General discussion
Topic: VideoTroubleshooting Starting Point
Replies: 4
Views: 821

Re: VideoTroubleshooting Starting Point

The power supply is known to be good: http://www.amazon.com/Charger-Adapter-PowerIQ-Technology-Motorola/dp/B00EI8SS4U/ref=sr_1_5?m=A294P4X9EWVXLJ&s=pc&ie=UTF8&qid=1433114000&sr=1-5&keywords=Anker+USB Replacing the HDMI seemed to solve the problem. I should have known better to try changing out the s...
by gatorback
Sat May 09, 2015 9:13 pm
Forum: Automation, sensing and robotics
Topic: rPi Drone using Turnigy SK450 + KK2 + sensors
Replies: 9
Views: 3906

Re: rPi Drone using Turnigy SK450 + KK2 + sensors

Have you considered using Simulink to simulate your system? They have a rPi hardware support package.

Whether you use Simulink or any other software package: simulation testing can bypass many iterations of expensive crashes.
by gatorback
Sat May 09, 2015 9:07 pm
Forum: General discussion
Topic: Physical form factor to support plug-in
Replies: 4
Views: 620

Physical form factor to support plug-in

I can envision a future revision of the rPi as a device that plugs-into a monitor or a TV. I am not sure there is a spec exists yet, but if one was published through conventional channels, I believe that the Samsungs of the world would embrace the spec. A simple start would be to place the HDMI and ...
by gatorback
Sat May 09, 2015 8:40 pm
Forum: Wanted
Topic: Hiring Developer
Replies: 6
Views: 2479

Re: Hiring Developer

Airplay can be installed / configured for IOS / OSX devices. Maybe start there and see if you can live without access controls. More often than not access controls are unnecessary obstacles. In this case the stakes are projector access, not sensitive data or a dangerous machines.
by gatorback
Mon Apr 06, 2015 4:01 am
Forum: General discussion
Topic: VideoTroubleshooting Starting Point
Replies: 4
Views: 821

Re: VideoTroubleshooting Starting Point

Thank you: good suggestions. Although I do not have a DVM because I'm on vacation, I tried two different 1.5A sources and realized I have a PowerAdd USB sourcing 2.0A, It seems that this device can play music (.mp3), whereas the other two power supplies experience dropout of video and sound. Video h...
by gatorback
Mon Apr 06, 2015 2:56 am
Forum: General discussion
Topic: VideoTroubleshooting Starting Point
Replies: 4
Views: 821

VideoTroubleshooting Starting Point

I believe I have a model B (Ethernet, Standard size SD-Card, 2 USB ports + RCA NTSC jack), that has it's HDMI video fading in and out. The device has over a year of stable performance and was playing a video perfectly when the video started cutting out. Flashes of white 'static' precede the video dr...
by gatorback
Wed Jan 16, 2013 3:00 pm
Forum: General discussion
Topic: CAD
Replies: 5
Views: 2891

CAD

I am a FIRST robotics volunteer. We have a problem where students are unwilling \ unable to bring laptops because they are stolen during the school day. If they could bring a raspberry pi, that would be harder to steal and they are an order of magnitude less in cost. We would like to run CAD program...

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