Raspberry Pi Forums

lilzz

I try

import socket
myip=socket.gethostbyname(socket.gethostname())

myip returns 127.0.0.1 which is loopback of L0.

how do I get the IP adds of wlan0?

lilzz

Pi IP address is valid and can ping others in the internet. I try to SSH into the Pi. Normally it should work but recently it doesn't .In the FileZilla, the directory of the Pi has a question mark in front . I don't know what that means. It using pi as username and raspberry as password and port 22 ...

lilzz

I am trying out with Bathman-adv, http://www.open-mesh.org/projects/batman-adv/wiki/Quick-start-guide Now its time to run batman-adv on both units: sudo modprobe batman-adv To setup a simple mesh between two raspberry pis, copy and paste the following lines on the first unit: sudo ifconfig wlan0 mtu...

lilzz

Due to my corrupted SD card I have to install RPi again

this time it gives an error.

sudo python setup.py install

the error says. python.h is missing.

what? I check /usr/bin/python exists the python library exists, why python.h missing?

lilzz

My pi just went hay wired during boot.

It wouldn't boot normally.
It ends with Permission denied
INIT : ld "1" responding too fast: disabled for 5 minutes

and keep repeating this loop.

Keyboard doesn't respond.

I don't know what I did to cause this issue.

lilzz

simplesi wrote:Is this related to your other issues or is that now fixed?

Simon

new issue. RPi library is successfully installed and old one purged.

lilzz

it complains of a pin "the channel is already in use" I reboot the system but still has this message. Why? Doesn't power reboot would make the GPIO reset to default?

lilzz

I've got 0.5.3a installed using apt-get install python-rpi.gpio Try to see what multitude of versions are installed on your system with find /usr | grep -i gpio Richard's test worked on that. It worked again after I apt-get purged that version and used PIP to install 0.5.5. Oh, I see both GPIO-0.2....

lilzz

DougieLawson wrote:You have an ancient version of RPi.GPIO installed. Purge it and install the current version.

i think its 0.5.4 is that old?

to unistall python setup.py uninstall?

lilzz

sudo python
import RPi.GPIO as GPIO
GPIO.VERSION (error) module has no attribute 'VERSION'

looks like the RPi library has some issue.

lilzz

1)how to disable wifi on boot?

2)and then bring it up manually ifup wlan0?

3)configure the network iwconfig wlan0 mode ad-hoc channel 11 essid "my network"
is channel 11 a good channel or other one is better?

4) how to disable dhcp and manually assign a ip address ip adds add 192.168.10.1

lilzz

The rotary encoder described in the video you linked to is just two switches; one side of each is A and B, the others are connected together as C All the other complications are just there to get the switches to open and close in the right order - you could do the same with any two switches, as lon...

lilzz

These encoders are switches. There is a common connection and A and B switch outputs. They don't need power. Typically you would connect common to GND and A and B to inputs with pullups. . I thought you said A and B are outputs and then you said they are inputs with pull-ups. Pullups to high. where...

lilzz

rpdom wrote:
lilzz wrote:1)If I turn the knob, then the wave form would be output on Pin A and B? but where does the power come from?
Pin C.

I thought Pin C is tied to ground. where does Pin A and B high come from?

lilzz

https://www.sparkfun.com/products/9117

1)If I turn the knob, then the wave form would be output on Pin A and B? but where does the power come from?

2)12 steps mean 12 sectors in one full revolution?

3)old A ,old B, A, B 4 bit word would give 16 values right?

lilzz

I did aptitude install babeld_1.3.1-1_armel.deb

it complains "couldn't find any package name or description matched babeld_1.3.1-1_armel.deb"

lilzz

This helps to explain about the rotary encoder. http://www.youtube.com/watch?v=CpwGXZX-5Ug it has 2 circular rings and a needle moving. but what if I have the wheel moving like a wheel of fortune, people actually spinning the wheel how would that work then ? how would the rings and terminals be diff...

lilzz

jamesh wrote:How important can it really be - this is the first post I've seen referencing it....

That said, you could put a comment in the Raspbian forum - plugwash should see it there.

If I have to use that daemon, do I need to download additionally from Debian or I just have to switch to arch Linux?

lilzz

Joe Schmoe wrote:You're talking about the one where you spin the wheel, then guess letters, buy vowels, and then solve the puzzle, right?

Or anything that spins a wheel, I just want to see how the wires from the wheel hook up with a rotary encoder and hook up to a pi.

lilzz

babeld - ad-hoc network routing daemon

Debian wheezy raspberry pi missing this important daemon

lilzz

blamarpa wrote:Mayor be you are thinking un something similar to a mesh.
http://en.wikipedia.org/wiki/Wireless_mesh_network

OK, so is it doable with wifi dongle?

lilzz

arg='ip route list'
proc=subprocess.Popen(arg, shell=True, stdout=subprocess.PIPE)
data=proc.communicate()

what I can expect from the data?

lilzz

for Pi.
Has anyone runs into that type of project?

lilzz

Not all wifi dongle can support AP mode. But those capable of, can they support self discovery?
self discovery means the wifi dongle with AP mode ping nearby nodes. The AP wifi would self discover their location within network topology.

lilzz

Hi, The far best approach (in terms of throughput) is to connect RasPi to Ethernet and configure AP with its WiFi card. (Additionally, PoE can simplify everything...) I'm wondering what is latest project you have completed with RasPi lately ? ;) Best wishes, Ivan Zilic. I am doing feasibility study...

Search found 411 matches

Trying to get my IP address from wlan0 in Python

SSH issue

Batman-adv of Debian, anyone knows?

RPi install failure

Howto to recover a haywired pi system.

Re: RPi GPIO.setup issue

RPi GPIO.setup issue

Re: RPi library issue

Re: RPi library issue

RPi library issue

A few questions regarding to Wifi management

Re: rotary encoder.

Re: rotary encoder.

Re: rotary encoder.

Re: rotary encoder.

Re: arch linux, ubuntu has babeld, debian wheezy doesn't

rotary encoder.

Re: arch linux, ubuntu has babeld, debian wheezy doesn't

Re: Looking for a wheel of fortune or wheel based game

arch linux, ubuntu has babeld, debian wheezy doesn't

Re: Can Wifi dongle with AP enabled capable of self discover

What does this subprocess do?

Looking for a wheel of fortune or wheel based game

Can Wifi dongle with AP enabled capable of self discovery?

Re: Can you use the Pi as network repeater in a big building