Amazing world of opensource Remote Vehicles

Amazing world of opensource Remote Vehicles

Fishpi
This project is powered by solar panels,gps recevier,magnetic compass.It is a boat project and is able to navigate autonomously on water surface.This machine achieved an incredible feat by crossing the atlantic ocean fully autonomously using just its sensor data.Raspberry Pi board is used as CPU for this project.

Aeroquad
Its a quadrotor based on arduino board.This project use many sensors such as gyroscope,barometer,ultrasonic ranger and gps receiever.Complete design is open source and its being actively developed.


OpenROV
Innovators have not left any possiblitiies yet to be explored - air,land,water all have been traversed by remote controlled rovers and its now turn for UNDER-WATER exploration.Openrov is a submarine and is based on beaglebone board.Its amazing underwater videos could be viewed on it Youtube Channel.

ArdupilotOne
ArdupilotOne is an arduino based autopilot system that can pilot airplanes, quad rotors, boats, and ground vehicles.

ArduPilot-Mega
Its based on custom board APM 1/2 dedicated for autopilot mode.It has many unique advantages like- waypoints could be marked in advance or modified on journey,the entire trip route can be planned.
This project is supported by desktop application,APM Planner for monitiring and controlling the remote drone .It also supports failsafe return when the drone goes out communication coverage.

Projects under it are -

1.Arducopter

2.ArduPlane

3.Ardurover




Forum for ardupilotoe and ardupilot-mega is located at diyplanes.com.

Dilemma of knowledge

Graphical representation of knowledge in forms of alphabet is too hard to visualize. Knowledge or previous experience was first gained orally when human beings learned to speak. Then arose a need to preserve knowledge in exact form,which was not possible through verbal mode. So, gradually words were given shapes/symbols to represent knowledge. In the industrial age machines were invented for mass production of knowledge in forms of text.
        Its a great sense of hypocrisy that we still use the same means of knowledge transmission that was used by our forefathers, even after achieving many technological breakthroughs like television, digital media and currently we have 3D (the tag-line – Experience it in 3D). ..( to be continued) - tbc
( 24-07-2011)

Controlling Reality/Nature

At Quantum level, 53x10^(-12m),
poition and velocity cannot be
measured simultaneously, with
precison.If somehow, someone can
ucontrol uncertainity/luck, she/he
 can become God.Luck emerges from
Quantum level (10-(53)m).In future,
with a powerful computer, we can
 run a simulation eactly as reality
.This program will goto quark level
 and also to cluster of galaxies.

Bitcoin - An Intro

Bitcoin is a cryptocurrency. It is decentraliseed and started in 2009.

Never Forget passwords, without storing them

The Problem

Everyone of us have an online account with so many services, like social networking, e-commerce, and email. This list is increasing day by day. Keeping minimum 8 character password with (symbols+alphanumeric code) has become a norm.

How do we remember all the passwords, for different service ?

A quick but very risky solution is to keep the same password for all services. Keeping the same password is like using the same key for all the locks. If one service is hacked, then the hacker might try the same password for other services too. This has happened before --

eBay Inc. To Ask eBay Users To Change Passwords

Sony Got Hacked Hard: What We Know and Don’t Know So Far

Ars Technica was hacked. Readers advised to change passwords

Another easy but cumbersome solution is to use password managers like KeePass. But again you need to manually enter password for every service, and take the encrypted password database file to where ever you need it. 

 

The Solution

 

There is  now an elegant, open source and very secure way to have different and difficult passwords for every website, without the need to store them.

Android

Hash it - Android  app        Play store Link      GitHub Source  

Official Page

Mozilla Firefox Addon 

Password Hasher                 GitHub Source 

 

How it works

 

One way hash functions like MD5, SHA are used to hash domain name with your master key to generate unique password.  Thus using single master key, unique password can be generated for different websites.

 

 

 

Mosquito Repellant Plant in India

Here comes a plant which has 10 times more mosquito repellent property than a popular mosquito repellent DEET. Mosquitoes are repelled by the scent of this plant.This plant has strange effect on cats.If not controlled this plant is quick to spread and can be invasive.It has attractive blue/purple flowers.

Scientific Name: Nepeta Cataria

Requirements: Grows well in poor soil

Time to Bloom : July to November

Native Place : Europe,Central Asia

Buy it for just (Rs 129) from National Seeds (ebay.in)


Buy it (Rs 99 + Rs 30) directly from Florafields.

Bird of Paradise seeds available in India

The magnificent top selling flower is out for sale in India

for just Rs 69 + Rs 39 (shipping ).This plant is fairly easy to grow.

Scientific Name: Strelitzia Reginae

Requirements: Rich loamy soil,ample water throughout the year

Time to Bloom : 3-5 years after germination

Native Place : South Africa

This is a slower grower so you may have to wait 5 years after

planting to see its beautiful flowers.Currently they ship 2 seeds.

Buy it from Evergreen Gardens (ebay.in)