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by nachiketh
Thu Jul 20, 2017 11:49 am
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Reading temperature data from a TC513AX
Replies: 0
Views: 190

Reading temperature data from a TC513AX

Hi, I'm working on a project where there is a need for me to read temperature data on a rPi, from a Temperature controller. The specifications of the same are in the link below: http://www.selec.com/Content/DownlodableFiles/Operating%20Manuals/Temperature%20series/Economic%20temperature%20controller...
by nachiketh
Sat Jul 15, 2017 2:51 pm
Forum: Advanced users
Topic: NTP Client Configuration
Replies: 1
Views: 390

NTP Client Configuration

I have setup my rPi to sync time from an NTP server on my network, I have a couple of questions regarding the same. Is there a way to make my rPi sync the timezone information as well along with the time. currently its only syncing the time but the timezone is still the same On boot, how to make sur...
by nachiketh
Wed Jan 27, 2016 8:56 am
Forum: General programming discussion
Topic: Encrypt SD card content
Replies: 41
Views: 33046

Re: Encrypt SD card content

how about this for protecting your intellectual property: sudo apt-get install ecryptfs-utils sudo apt-get install lsof sudo ecryptfs-migrate-home -u pi There will be a bit more to it but thats the main part - it will only cover your home folder. If you want to do more then its something like: http...
by nachiketh
Mon Dec 14, 2015 2:43 pm
Forum: Troubleshooting
Topic: RPi hangs on boot with ACT LED continously on
Replies: 3
Views: 405

Re: RPi hangs on boot with ACT LED continously on

Read the sticky again, because a continously glowing ACT means it's corrupted. Oops I somehow missed that line.. thanks! You may be able to browse the files, but it still could be corrupted. How do you shutdown the Pi? Do you pull the plug? Yes the Pi runs in an environment where the power supply i...
by nachiketh
Mon Dec 14, 2015 2:24 pm
Forum: Troubleshooting
Topic: RPi hangs on boot with ACT LED continously on
Replies: 3
Views: 405

RPi hangs on boot with ACT LED continously on

I have been using the RPi(Raspberry Pi 2 Model B) for the last few months on a regularly without any issues, however it has stopped working since last night where after reboot the Pi wont come up. Both the red and the green LED are glowing fully and the Pi is not booting up. Connecting it to a displ...
by nachiketh
Sat Dec 12, 2015 8:15 am
Forum: Troubleshooting
Topic: WiFi Latency Issues
Replies: 2
Views: 437

Re: WiFi Latency Issues

The real test of signal quality is to use it. Any problems? Yes i'm facing packet drops between my laptop and pi and also delays in TCP communication, this is intermittent as most times the ping response seems ok and sometimes it is high, below is a snapshot, as you can see the min is 10 ms where a...
by nachiketh
Fri Dec 11, 2015 5:35 pm
Forum: Troubleshooting
Topic: WiFi Latency Issues
Replies: 2
Views: 437

WiFi Latency Issues

So i'm running an rPi in an always on mode and connecting to it over the WiFi. I'm using a 0a12:0001 Cambridge Silicon Radio, Ltd Bluetooth Dongle (HCI mode) USB WiFi dongle which is one of the recommended peripherals. I'm seeing that the network latency from my laptop to the rPi is too high whereas...
by nachiketh
Tue Dec 08, 2015 4:12 pm
Forum: Troubleshooting
Topic: WiFi Link goes down
Replies: 3
Views: 1258

Re: WiFi Link goes down

Have you disabled the power saving mode for your WiFi dongle? https://www.raspberrypi.org/forums/viewtopic.php?p=855239#p855239 I'm unable to find the modprobe file for my adapter. The following is USB device details: Bus 001 Device 007: ID 0a12:0001 Cambridge Silicon Radio, Ltd Bluetooth Dongle (H...
by nachiketh
Fri Dec 04, 2015 6:43 am
Forum: Troubleshooting
Topic: WiFi Link goes down
Replies: 3
Views: 1258

WiFi Link goes down

Hi Folks, I'm using a USB WiFi dongle on my RPi, I have observed that after some time (~1Day) the WiFi goes down and requires me to reboot the rPi whenever that happens, upon going through the syslog I found the following error around the time the rPi went offline: Dec 4 10:18:24 raspberrypi ifplugd...
by nachiketh
Wed Jul 15, 2015 6:42 pm
Forum: Advanced users
Topic: RS232 Interfacing on RPi
Replies: 12
Views: 1128

Re: RS232 Interfacing on RPi

ame wrote:By "inject your own characters" I mean just send some extra characters to the serial port which are additional to any characters that the protocol specifies.
Thanks, will try this out and see if I can actually simulate the same behaviour on Linux
by nachiketh
Wed Jul 15, 2015 6:41 pm
Forum: Advanced users
Topic: RS232 Interfacing on RPi
Replies: 12
Views: 1128

Re: RS232 Interfacing on RPi

But you did this on Windows ? I have a feeling that these codes we are talking about only exist on the Windows side. (between hardware and application) (Thats how I interpret "Enables or disables placement of a line and modem status data into the data stream." anyway.) But I can't be sure if it imp...
by nachiketh
Wed Jul 15, 2015 10:05 am
Forum: Advanced users
Topic: RS232 Interfacing on RPi
Replies: 12
Views: 1128

Re: RS232 Interfacing on RPi

The question is, do you really need it ? I tried interfacing with the legacy device using PySerial without setting the controls, I did not receive any response from the device. I then had to move to C++ where I can set these control codes and I was then able to successfully interface with the devic...
by nachiketh
Wed Jul 15, 2015 9:57 am
Forum: Advanced users
Topic: RS232 Interfacing on RPi
Replies: 12
Views: 1128

Re: RS232 Interfacing on RPi

And yes, you should be able to inject your own characters trivially into the data stream. What are they? The API is setting the value to 255(ff), so it in the protocol it looks something like this: 34 13/07/2015 14:43:13 IRP_MJ_DEVICE_CONTROL (IOCTL_SERIAL_LSRMST_INSERT) DOWN STATUS_SUCCESS ff ÿ 35...
by nachiketh
Wed Jul 15, 2015 9:37 am
Forum: Advanced users
Topic: RS232 Interfacing on RPi
Replies: 12
Views: 1128

Re: RS232 Interfacing on RPi

Hi Joan, The Pi's UART is TTL (0-3.3V) not RS232 (-12-12V). So does that mean the UART on RPi cannot be used as is for my application? Does Linux support those IOCTLs? Have you googled for Linux and the ioctl? Yes I have googled around quite a bit around this, but there is nothing available on Linux...
by nachiketh
Wed Jul 15, 2015 9:25 am
Forum: Advanced users
Topic: RS232 Interfacing on RPi
Replies: 12
Views: 1128

RS232 Interfacing on RPi

Hi Folks, So I have developed a Win32 C++ program which basically communicates over RS232 interface to receive some data from a legacy hardware. I'm trying to port this application onto a RaspberryPi, so I first wanted to check the feasibility of doing this. I have already checked with PySerial, how...
by nachiketh
Thu Sep 04, 2014 7:37 am
Forum: Beginners
Topic: raspberry PI logo
Replies: 8
Views: 5247

Re: raspberry PI logo

Hi,
Is there a way to change the default raspberry logo on the desktop background, which appears after raspbian boots up? If anyone has been able to do it, please let me know. :)
Thanks & Regards,
Nachiketh
by nachiketh
Thu Jul 31, 2014 4:43 pm
Forum: Raspbian
Topic: On screen keyboard
Replies: 76
Views: 172529

Re: On screen keyboard

Hi Folks, This is a great little tool for a touch keyboard, can we make this keyboard overlay on an application say a browser, right now what is happening is that I can run either the keyboard or the application(browser). So can we run this application in "always in the front" mode. :roll: Thanks & ...
by nachiketh
Thu Jul 31, 2014 2:31 pm
Forum: Raspbian
Topic: Double Click to Single Tap
Replies: 2
Views: 515

Re: Double Click to Single Tap

Awesome! that works... thanks a ton! :)
Regards,
Nachiketh
by nachiketh
Thu Jul 31, 2014 1:39 pm
Forum: Raspbian
Topic: Double Click to Single Tap
Replies: 2
Views: 515

Double Click to Single Tap

Hi,
I have integrated a touch screen with my RPi, I wanted to change the behaviour of Raspbian OS desktop to launch applications when I tap on it without having to do a double-tap. Is there a way to achieve this. Please let me know. :)
Thanks & Regards,
Nachiketh
by nachiketh
Thu Jul 31, 2014 1:01 pm
Forum: Beginners
Topic: Touch Screen - USB controller
Replies: 27
Views: 10663

Re: Touch Screen - USB controller

Which screen did you get working? I've been searching for the last week for a ~7 inch touch display that isn't overly expensive and is known to work well enough. :) oh yes I have atleast 2 touch screens ordered from Ebay which dint work and lost ~200$ . Then I ran into sainsmart.com, http://www.sai...
by nachiketh
Thu Jul 31, 2014 11:17 am
Forum: Beginners
Topic: Touch Screen - USB controller
Replies: 27
Views: 10663

Re: Touch Screen - USB controller

So finally I was able to get a working touch screen integrated with my Rpi(wohoo!) :D I have a query regarding changing the "double click" functionality on Raspbian Desktop to a single click... so what I want to achieve is when I tap on the application icon on the desktop, it should launch the appli...
by nachiketh
Mon Feb 03, 2014 5:22 pm
Forum: Beginners
Topic: Touch Screen - USB controller
Replies: 27
Views: 10663

Re: Touch Screen - USB controller

Alright i'm giving up on this touch screen :oops: , can anyone recommend a touch screen which has actually worked with the pi which I can use? If yes can you point me to the place where I can order it?
thanks!
by nachiketh
Sun Jan 19, 2014 8:25 am
Forum: Beginners
Topic: Touch Screen - USB controller
Replies: 27
Views: 10663

Re: Touch Screen - USB controller

I tried tried the few things suggested: root@raspberrypi:/home/pi# dd if=/dev/sda of=/tmp/sda.dump.file dd: opening `/dev/sda': No medium found root@raspberrypi:/home/pi# ls /dev/sda /dev/sda root@raspberrypi:/home/pi# fdisk -l /dev/sda root@raspberrypi:/home/pi# mount /dev/sda /media mount: no medi...
by nachiketh
Tue Jan 14, 2014 5:59 pm
Forum: Beginners
Topic: Touch Screen - USB controller
Replies: 27
Views: 10663

Re: Touch Screen - USB controller

So I'm finally back with some more testing. I plugged in the USB from the touch screen to the USB on the pi and saw the following output in /var/log/messages: Jan 14 17:47:32 raspberrypi kernel: [ 1189.358249] usb 1-1.3: new high-speed USB device number 12 using dwc_otg Jan 14 17:47:32 raspberrypi k...
by nachiketh
Mon Dec 16, 2013 11:22 am
Forum: Beginners
Topic: Touch Screen - USB controller
Replies: 27
Views: 10663

Re: Touch Screen - USB controller

Strange that they claim it to be "Plug and Play" on their page :D
Thanks for the info, I will check the /var/log/messages when I plug in the touch controller and send the details later today.
Thanks!

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