How to PPTPD (PopTop)

Below is a way to connect your clients like smartphone, laptop, etc to the Internets while you are out and about connecting to random WiFi networks etc like Mac Donalds, and to help protect yourself while on them unknown networks with unknown users

Install mppe kernel support

# modprobe ppp-compress-18

Install PPTPD

# apt-get install pptpd

Configure IP Address Range
Edit the file /etc/pptpd.conf for the IP address range

localip 172.16.100.1
remoteip 172.16.100.200-250

restart pptpd to activate changes

# invoke-rc.d pptpd restart

Adding users accounts
Edit the file /etc/ppp/chap-secrets

test_user * lamepassword *

The above will give you a working PPTPD where your able to connect to securely but you’ll most probably can’t connect to the outside network.

To allow you PPTP clients access to the big bad internet

Enable IPv4 forwarding

echo 1 > /proc/sys/net/ipv4/ip_forward

Finally configure your iptables

iptables -A INPUT -i ppp+ -j ACCEPT
iptables -A OUTPUT -o ppp+ -j ACCEPT
iptables -A POSTROUTING -t nat -o eth0 -j MASQUERADE
iptables -A POSTROUTING -t nat -o ppp+ -j MASQUERADE

If you want all traffic to go through the PPTP connection
Edit the file /etc/ppp/pptpd-options and change

# Debian: do not replace the default route
nodefaultroute

to

# Debian: do not replace the default route
#nodefaultroute

and don’t forget to restart pptpd ;-)

Reference
Debian pptpd HOWTO
IP Chicken

Adelaide Mini Maker Faire

WHAT IS A MINI MAKER FAIRE?
A Maker Faire is where makers of all kinds get together and show what they can do. Adelaide Mini Maker Faire will have all kinds of demonstrations from 3D printing to blacksmithing and knitting to digital fabrication and everything in between.

Maker Faires feature innovation and experimentation across the spectrum of science, engineering, art, performance and craft.

Maker Faire is part of a growing DIY local and global movement of people who look at things a little differently and who just might spark the next generation of scientists, engineers and makers.

Date: Saturday 6 April 2013
Venue: Adelaide College of Arts 39 Light Square, Adelaide
Time: 10.00am to 6.00pm

Official website: http://www.makerfaireadelaide.com

Air-Stream hosted Foundation Licence Course

Following the many expressions of interest from our members, we have now arranged the weekend 23rd and 24th of March for another Foundation Licence training and examination course. Thanks again go to Paul Hoffman VK5PH for taking the time to organise and host this event.

Location: Parkside Primary School
Date: 23rd & 24th of March 2013
Time: 0900-1700 hrs

For further details and making a booking

udev rules for ADB

# nano /etc/udev/rules.d/51-android.rules

SUBSYSTEM=="usb", ATTR{idVendor}=="0502", MODE="0666", GROUP="plugdev"
SUBSYSTEM=="usb", ATTR{idVendor}=="0B05", MODE="0666", GROUP="plugdev"
SUBSYSTEM=="usb", ATTR{idVendor}=="413C", MODE="0666", GROUP="plugdev"
SUBSYSTEM=="usb", ATTR{idVendor}=="0489", MODE="0666", GROUP="plugdev"
SUBSYSTEM=="usb", ATTR{idVendor}=="091E", MODE="0666", GROUP="plugdev"
SUBSYSTEM=="usb", ATTR{idVendor}=="18D1", MODE="0666", GROUP="plugdev"
SUBSYSTEM=="usb", ATTR{idVendor}=="109B", MODE="0666", GROUP="plugdev"
SUBSYSTEM=="usb", ATTR{idVendor}=="0BB4", MODE="0666", GROUP="plugdev"
SUBSYSTEM=="usb", ATTR{idVendor}=="12D1", MODE="0666", GROUP="plugdev"
SUBSYSTEM=="usb", ATTR{idVendor}=="24E3", MODE="0666", GROUP="plugdev"
SUBSYSTEM=="usb", ATTR{idVendor}=="2116", MODE="0666", GROUP="plugdev"
SUBSYSTEM=="usb", ATTR{idVendor}=="0482", MODE="0666", GROUP="plugdev"
SUBSYSTEM=="usb", ATTR{idVendor}=="17EF", MODE="0666", GROUP="plugdev"
SUBSYSTEM=="usb", ATTR{idVendor}=="1004", MODE="0666", GROUP="plugdev"
SUBSYSTEM=="usb", ATTR{idVendor}=="22B8", MODE="0666", GROUP="plugdev"
SUBSYSTEM=="usb", ATTR{idVendor}=="0409", MODE="0666", GROUP="plugdev"
SUBSYSTEM=="usb", ATTR{idVendor}=="2080", MODE="0666", GROUP="plugdev"
SUBSYSTEM=="usb", ATTR{idVendor}=="0955", MODE="0666", GROUP="plugdev"
SUBSYSTEM=="usb", ATTR{idVendor}=="2257", MODE="0666", GROUP="plugdev"
SUBSYSTEM=="usb", ATTR{idVendor}=="10A9", MODE="0666", GROUP="plugdev"
SUBSYSTEM=="usb", ATTR{idVendor}=="1D4D", MODE="0666", GROUP="plugdev"
SUBSYSTEM=="usb", ATTR{idVendor}=="0471", MODE="0666", GROUP="plugdev"
SUBSYSTEM=="usb", ATTR{idVendor}=="04DA", MODE="0666", GROUP="plugdev"
SUBSYSTEM=="usb", ATTR{idVendor}=="05C6", MODE="0666", GROUP="plugdev"
SUBSYSTEM=="usb", ATTR{idVendor}=="1F53", MODE="0666", GROUP="plugdev"
SUBSYSTEM=="usb", ATTR{idVendor}=="04E8", MODE="0666", GROUP="plugdev"
SUBSYSTEM=="usb", ATTR{idVendor}=="04DD", MODE="0666", GROUP="plugdev"
SUBSYSTEM=="usb", ATTR{idVendor}=="0FCE", MODE="0666", GROUP="plugdev"
SUBSYSTEM=="usb", ATTR{idVendor}=="2340", MODE="0666", GROUP="plugdev"
SUBSYSTEM=="usb", ATTR{idVendor}=="0930", MODE="0666", GROUP="plugdev"
SUBSYSTEM=="usb", ATTR{idVendor}=="19D2", MODE="0666", GROUP="plugdev"

# chmod +x /etc/udev/rules.d/51-android.rules

Reference:
Using Hardware Devices

Festival of History

About:
The Old Reynella Festival of History includes re-enactors in uniforms and historic clothing, the firing of old cannon and mock battles and huge model soldier re-enactment of the Battle of Leipzig. There will be a major street parade featuring vintage cars, old military vehicles and bands

When:
Saturday 9th Sunday 10th March 2013

Where:
Old Reynella South Australia

Attached is a pdf explaining the whole event, the groups participating, and some the history of Old Reynella.
2013 Festival of History

Acceleration of an object

AIM:
Estimate the acceleration of an object due to gravitational force.

Equipment:

  1. mass (weights)
  2. ticker tape
  3. ticker machine
  4. PSU
  5. tape measure
  6. sticky tape

Method:

  1. Connect sticky tape to one end the ticker taper and thread the other end through the ticker tape machine.
  2. Connect the ticker tape machine to the AC connectors on the PSU and set the PSU to ~6VAC.
  3. Connect weight (mass) to the end of the ticker tape with the sticky tape on and turn on PSU and drop mass from min. of one meter.
  4. Check for dots made by the ticker machine and pic a section of ~500mm of ticker tape and measure between the first and last dots in the section, then count up the intervals between the dots.
  5. Work out the acceleration now by doubling the intervals and divide by 100 to get a decimal value (t)

using the formula a={\frac{2s}{t^2}}

S = length of tape section

EARC Crystal set compitition

Last night the 19th Dec. the EARC had its tech night at The National Military Vehicle Museum at Edinburgh Parks and here are some the images from the night Crystal Receiver judging. The prize was donated by Aztronics which was a solder fume extractor that was won by Chris VK5ZST.

I also like to give a big thanks for Paul VK5VCO who arrange the crystal receiver comp, the prize, and the doing the judging. Also a big thanks to the Military Vehicle Preservation Society (MVPS) for the Museum tour and venue for the crystal set judging. And also big thanks to all that entered comp and turned up for the night.

Enjoy the pics I took from the night

I reject your reality and substitute my own

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