Search found 75 matches
- Wed Dec 26, 2018 9:40 am
- Forum: C/C++
- Topic: Share GPIO between multiple programs triggers interrupt
- Replies: 0
- Views: 705
Share GPIO between multiple programs triggers interrupt
Hello All, I'm running a few scripts on the RPI, but suddenly I got an issue. First script creates an interrupt if the doorbell rings and triggers the wireless telephones to ring. (We don't hear the doorbell when outside etc.) Second scripts reads out energy consumption at 21 o'clock, 0 o'clock, and...
- Sat May 14, 2016 7:25 am
- Forum: General discussion
- Topic: Getting selenium python to work on Raspberry Pi Model B
- Replies: 12
- Views: 43252
Re: Getting selenium python to work on Raspberry Pi Model B
This does not work anymore, It works when you change the code, not the timeout value because it is a default value when no argument is given. The real timeout comes from : /usr/local/lib/python2.7/dist-packages/selenium/webdriver/firefox/webdriver.py class WebDriver(RemoteWebDriver): # There is no n...
- Sun Mar 13, 2016 6:06 pm
- Forum: Interfacing (DSI, CSI, I2C, etc.)
- Topic: Reading UART registers
- Replies: 4
- Views: 2889
Re: Reading UART registers
I was not aware of that functio, will try it but i'm not sure it will work.
- Sun Mar 13, 2016 10:14 am
- Forum: Interfacing (DSI, CSI, I2C, etc.)
- Topic: Reading UART registers
- Replies: 4
- Views: 2889
Re: Reading UART registers
Thanks, This is new to me, maybe try this offsets. #define UART0_BASE (piPeriphBase + 0x201000) #define UART1_BASE (piPeriphBase + 0x215000) Not sure if it is using UART0 or UART1. I think we are using PL011. Mini: offset = 0x7E 215000 PL011: 0x7E 20100 , see page 177 Typo in the code or datasheet?
- Sun Mar 13, 2016 8:34 am
- Forum: Interfacing (DSI, CSI, I2C, etc.)
- Topic: Reading UART registers
- Replies: 4
- Views: 2889
Reading UART registers
Hello, I have a RPi2 and want to have access to the UART registers. I've made my own PCB with as an interface board suited for my needs. On this board there is a RS485 IC (MAX3485), but this needs an additional output to switch between RX/TX mode (half duplex communication). So I have to check the T...
- Fri Oct 25, 2013 4:18 pm
- Forum: Networking and servers
- Topic: OpenVpn performance
- Replies: 0
- Views: 4834
OpenVpn performance
Hello, I'm running OpenVPN on a RPi in a datacenter, I got 100 mbit up and 100 mbit down, this speed is verified with a speedtest. I'm running OpenVPN for access my shares, browsing the internet. The configuration works as expected. Now... The speed is very slow. I've tried a lot but I can't improve...
- Sun Oct 20, 2013 5:20 pm
- Forum: General discussion
- Topic: Doing somethin useful in idle time
- Replies: 23
- Views: 7303
Re: Doing somethin useful in idle time
I agree.
But I am responsible for the data that's being received or sent over the internet.
Setting up a VPN and doing very bad "anonymous" things on the internet... that's a big personal risk.
But I am responsible for the data that's being received or sent over the internet.
Setting up a VPN and doing very bad "anonymous" things on the internet... that's a big personal risk.
- Sun Oct 20, 2013 11:01 am
- Forum: General discussion
- Topic: Doing somethin useful in idle time
- Replies: 23
- Views: 7303
Re: Doing somethin useful in idle time
Okay, hosting the images of the raspberry pi seems one thing as long as I have storage enough.
But what's the benefit, I think there are quite a lot seeds of the images.
The pi isn't very fast, I know, the connectivity is the real deal
But what's the benefit, I think there are quite a lot seeds of the images.
The pi isn't very fast, I know, the connectivity is the real deal

- Sat Oct 19, 2013 11:34 am
- Forum: General discussion
- Topic: Doing somethin useful in idle time
- Replies: 23
- Views: 7303
Doing somethin useful in idle time
Hi, I have a raspberry pi in colocation, so it's always on. Very useful to me, but quite a lot idle time, so that could be better. I'm searching for some suggestions, how to get the most out of it. I was thinking on a bitcoin miner, or something like that, but I guess it's not worth it. Maybe there ...
- Sun Sep 29, 2013 10:06 am
- Forum: General discussion
- Topic: Automated form filling
- Replies: 4
- Views: 1252
Re: Automated form filling
reposting "bargains" on website 
So need some data to extract before completing the post request

So need some data to extract before completing the post request

- Sun Sep 29, 2013 9:13 am
- Forum: General discussion
- Topic: Automated form filling
- Replies: 4
- Views: 1252
Automated form filling
Hello,
I want to use automated form filling on a webpage with a Pi.
Something like iMacros addon for firefox.
I'm using Python Curl and Beatiful Soup to do the necessary things, but I'm hoping there is a better way.
Any suggestions, because it's very difficult this way.
Thank you!
I want to use automated form filling on a webpage with a Pi.
Something like iMacros addon for firefox.
I'm using Python Curl and Beatiful Soup to do the necessary things, but I'm hoping there is a better way.
Any suggestions, because it's very difficult this way.
Thank you!
- Sat Sep 07, 2013 12:09 pm
- Forum: Networking and servers
- Topic: pptp very bad performance for browsing
- Replies: 0
- Views: 1793
pptp very bad performance for browsing
Hello, I've tried to set up a VPN-server for someone's business trips. Because too much normal things are blocked now. I did a dual config with PPTP and OpenVPN PPTP works very slow on my own computer and his computer. OpenVPN works great on my computer, but there is still a problem on his computer ...
- Sun Aug 25, 2013 11:55 am
- Forum: Other programming languages
- Topic: Bash, append \n to a string
- Replies: 5
- Views: 4274
Re: Bash, append \n to a string
worksif [ ${#data} -gt 0 ]; then
data="$data\n"
fi
data="$data$sensor,$temp"
done
echo -e $data
data=$(echo -e $data)

- Sun Aug 25, 2013 11:40 am
- Forum: Other programming languages
- Topic: Bash, append \n to a string
- Replies: 5
- Views: 4274
Re: Bash, append \n to a string
This is where it happens, echo is OK Echo to the data variable is the solution? if [ ${#data} -gt 0 ]; then data="$data\n" fi data="$data$sensor,$temp" done echo -e $data When looking at the data received at xively: 28-000004eef0d4,28.062\n28-000004eec74b,31.062 Maybe it's better...
- Sun Aug 25, 2013 9:02 am
- Forum: General discussion
- Topic: Read/Write cycles of a SD card
- Replies: 30
- Views: 77703
Re: Read/Write cycles of a SD card
Think that isn't an issue.
40.000 and counting... very good card I suppose
40.000 and counting... very good card I suppose

- Sun Aug 25, 2013 8:32 am
- Forum: Other programming languages
- Topic: Bash, append \n to a string
- Replies: 5
- Views: 4274
Bash, append \n to a string
Hello, I can't figure out how to add a \n to the end of a string. The purpose is to build a very simple csv string. I did some research on the net but it isn't clear. I've read some things with 'echo -e' but bash isn't that simple as python etc. If the variable > 0 (has data), add a \n before adding...
- Fri Aug 23, 2013 5:57 pm
- Forum: Python
- Topic: Nokia Pi LCD
- Replies: 253
- Views: 122196
Re: Nokia Pi LCD
I've used this tutorial as a starting point: http://binerry.de/post/25787954149/pcd8544-library-for-raspberry-pi#disqus_thread It works, after some try and error, but I have a strange reset issue. When the reset is connected, the display works very short as is should be, and is blank afterwards. Whe...
- Sat Aug 10, 2013 9:55 am
- Forum: Other projects
- Topic: ST7920 serial mode not working
- Replies: 0
- Views: 1675
ST7920 serial mode not working
Hello. I'm trying to get a ST7920 display (12864ZW) working in serial mode. This is a 128x64 display, so quite a lot of information can be displayed. I'm using serial mode, so number of GPIO's are limited to the minimum. A fist try was with SPI, but that didn't work, so I'm trying to bitbang the ser...
- Wed Aug 07, 2013 7:04 pm
- Forum: Interfacing (DSI, CSI, I2C, etc.)
- Topic: Best all round IO library for C
- Replies: 0
- Views: 553
Best all round IO library for C
Hello, I was wondering what's the best all round GPIO library for C. The basic idea is writing one "background" handler to handle a 128x64 display. with some general information about te pi, and some various program inputs. It's a ST7920 display, not the most easy job to interface, but tha...
- Wed Jul 24, 2013 6:16 pm
- Forum: C/C++
- Topic: Sending data between seperate programs
- Replies: 3
- Views: 1324
Sending data between seperate programs
Hello, I'm planning to using a 128x64 LCD display, I want to show some data from other programs. I was thinking to run this task in the background with some different screens. For example: Screen 1: CPU load, memory usage, disk usage, network usage. Since this is general information, this is polled ...
- Mon May 27, 2013 9:15 pm
- Forum: General discussion
- Topic: Read/Write cycles of a SD card
- Replies: 30
- Views: 77703
Re: Read/Write cycles of a SD card
I'm trying (1500 cycles atm)
https://xively.com/feeds/127941/
https://xively.com/feeds/127941/
- Fri May 17, 2013 9:20 pm
- Forum: General discussion
- Topic: RaspBerry Pi(e) Model C (imaginations & wants)
- Replies: 431
- Views: 165470
Re: RaspBerry Pi(e) Model C (imaginations & wants)
The suppliers aren't paying your power bill, so that is of no benefit to the Foundation (at least, not for that reason). This is a small thing you can to to help "saving" the environment just a little bit more without personal drawbacks. Run command: sudo ifdown eth0 Chip is still a bit h...
- Fri May 17, 2013 9:09 pm
- Forum: General discussion
- Topic: My story about Farnell warranty
- Replies: 0
- Views: 896
My story about Farnell warranty
My Pi was broken, not the whole pi but the ethernet part. It was one of the first pi's, ordered in the UK, shipped to Belgium. I contacted the Belgium distributor, but they said I should contact the UK distributor. Very kind people and quick responses. They sent UPS to pick up my raspberry pi for fr...
- Wed May 15, 2013 8:17 pm
- Forum: General discussion
- Topic: RaspBerry Pi(e) Model C (imaginations & wants)
- Replies: 431
- Views: 165470
Re: RaspBerry Pi(e) Model C (imaginations & wants)
Cheap improvements:
- More efficient power regulators, when always on the cost is earned back quite fast.
- Possibility to shut off ethernet.
- RTC
More expensive improvements.
- Wifi / Bluetooth chip
- More efficient power regulators, when always on the cost is earned back quite fast.
- Possibility to shut off ethernet.
- RTC
More expensive improvements.
- Wifi / Bluetooth chip
- Sun Apr 28, 2013 11:57 am
- Forum: Other projects
- Topic: Just for fun: trying to reach the write limit of old SD card
- Replies: 0
- Views: 545
Just for fun: trying to reach the write limit of old SD card
Hello everyone, I'm trying just for fun to reach the write limit of an old SD card (256MB) since it has no longer any use. I can't find a brand on the card, and it's an old card that was used in an old GPS. I hope this wil show that write limit of SD cards aren't the issue. I've made a batch script ...