Redesigning The RC Tank

July 21, 2012 by 6 Comments

[youtube=http://www.youtube.com/watch?v=–YZHMqHzPw]

[Vincent] started building this tank (translation) with a regular hobby model: the Heng Long Tiger 1. However, after considering some goals for the project, he decided to nearly gut the tank and redesign it, basing it on the Arduino and a standard Motor Shield. The possibilities with this setup are nearly endless. In its current form, the ArduTiger detects obstacles in front of it by way of three servo-mounted infrared rangefinders. The tank’s trajectory can be adjusted automatically based on feedback from the servo positions. Two additional short-range rangefinders detect if there is ground for the tank to roll over, keeping it safe from cliffs and black holes.  [Vincent] plans on updating this beast by adding a Raspberry Pi for live video and advanced control… and maybe even adding a Geiger counter!

ArduSat Puts Arduino Experiments In Space

June 15, 2012 by 30 Comments

CubeSats are nothing new – hundreds have been launched into Earth orbit by schools and universities over the past decade. Like anything cool, an Arduino eventually gets thrown into the mix. That’s what the folks behind ArduSat are doing: they’re launching an Arduino-laden satellite into orbit with a bunch of sensors to enable anyone to become a citizen space scientist.

On board the ArduSat is a suite of sensors including a spectrometer, Geiger counter, IR light sensor, electromagnetic wave sensor, a temperature sensor, gyroscope, accelerometer, magnetometer, GPS unit, CO2 sensor, and of course a few cameras. The rewards for this Kickstarter are fairly interesting: backers who pledge $500 are able to buy a week’s worth of time using the ArduSat sensors for your own personal experiment.

As for how this Arduino-powered satellite is getting a ride up to Low Earth Orbit, the team plans to send an application into NASA for the CubeSat Launch Initiative ride-along program. If NASA selects the ArduSat, it’ll get a ride into space along with other CubeSats on a larger commercial launch. If the ArduSat isn’t selected by NASA, the team behind this satellite has secured funding to piggyback on a commercial launch.

Tip ‘o the hat to [HackTheGibson] for sending this in.

Making Music With Radiation

May 25, 2012 by 11 Comments

[Jeff Keyser] from mightyohm.com got a chance to show off this interesting take on ambient music. He’s using his geiger counter kit to detect beta and gamma radiation. This then sends a pulse down the line to an Arduino to turn it into a musical note. The geiger counters put out a 1.ms 3v pulse though, so he first has to run this through a 74Ls04, which spits out the 5V the arduino wants. He’s admittedly no musician, but you can hear in the video it sounds fine. Especially considering they are all just C in different octaves. Those of us that are musicians probably would have gone with a B#.

The ambient noise is interesting, but when you realize it is due to radioactive decay, it becomes somehow more attention getting. We often forget about the invisible world around us. He even drops a few Uranium marbles onto the geiger counters to spice things up.

Continue reading “Making Music With Radiation” →

Sell Your Projects With Club Jameco

May 16, 2012 by 17 Comments

Everyone’s favorite electronic component distributor, Jameco, rolled out a new way for you to make a few bucks off of your projects. It’s called Club Jameco and looks like a great place to design, sell, and learn about new projects from around the Internet.

The premise behind Club Jameco is simple. You send Jameco a short description of one of your projects. If the folks at Jameco think your project will sell, they’ll post it on Club Jameco for some feedback while you write up the instructions and the BOM. Once your project is done, Jameco will build it, sell it, and send you a nice royalty check in the mail.

Already there are some pretty neat projects up on Club Jameco like a build your own transformer kit and a photodiode geiger counter. We’re sure Hackaday readers have a few interesting projects up their sleeves, so we’ll wait patiently until we see them on Club Jameco.

Tip ‘o the hat to [War_Spigot] and [PUNiSH3R] for sending this one in.

Measure Radiation With Military Surplus

February 2, 2012 by 13 Comments

It’s really amazing what you can find at military surplus shops. [David] just built a radiation detector out of a DT-590A scintillation probe originally made to test if Air Force bases were contaminated with Plutonium. Who says nothing good came out of massive nuclear arsenals?

DT-590A / PDR-56 Gamma ray probes were made obsolete by the US Air Force a few years ago and they’re trickling into military surplus stores around the country and the Internet. [David] found the manual for this probe and put together a little circuit to drive this x-ray sensor. The build uses an ammeter as a simple dial, and includes a piezo speaker for the prerequisite Geiger counter ‘clicks.’

[David] also threw up a post on converting this x-ray probe into a general purpose Gamma probe, effectively making it a Geiger counter for the really dangerous radiation. You could always use your smart phone for the same task, but recycling military hardware imparts a good bit of geek cred.

Weekly Roundup 1/28/12

January 28, 2012 by 1 Comment


Another week has passed and it is time to review the best of what hit our blog in the past week.

In first place is a repeat from last week showing how you can turn an Android device with a CMOS camera into a radiation detector.

In first place if we ignore repeats is a post about how the Raspberry Pi board can decode 1080p video! We’re just itching to get our grubbly little hands on some of these guys when they are finally released.

Up next is a project from one of our own. This week [Brian Benchoff] put up a post about how he built a manifold clock after seeing a similar project on Kickstarter.

Following that is a post showing how you can overlay video onto an encrypted HDMI signal. The MPAA would probably like to crack [bunnie] over the knuckles with a ruler for this one but he actually isn’t decrypting anything. Instead, he is encrypting the overlay and just replacing the normal video with it.

We like this next one a lot because it not only is a nice hack but it allows you to subtly control what can and cannot happen around you. Specifically, you can jam remote control helicopters with this device. It probably wouldn’t be too hard to pair this up with a TV B Gone to keep people from turning the TV back on once you have wrought your mischief.

Finally, another really neat one for you. In this post, we show [Sprite_tm’s] radio transmitter that is composed out of two button cell batteries, two lengths of wire and an ATtiny processor. It is amazing that this even works but with the right tools, a good hacker can do just about anything.

Weekly Roundup 1/21/12

January 21, 2012 by 2 Comments


In case you were asleep at the wheel, here are our top stories of the week.

Our most popular post was one that shows you how to make your own ‘personal assistant’ using Wolfram Alpha, text to speech software, and the phone network. It still won’t get your coffee though. You’ll just have to do that yourself.

Coming in at second place was a post about how to use your Android camera phone as a Geiger counter. Of course, this hack will work with any device that uses a CMOS sensor to do its imaging but they have gone and wrapped it up into a nice app.

Do you have access to a laser cutter and a burning desire (pun intended) to make gears? In this post Alex makes some acrylic gears using an Epilog laser cutter.

When is our government going to get it through their heads that we don’t want the internet to be controlled by a small group of corporations? Probably when the lobbyists stop giving them money by the boat load to do just that… It seems like several times a year a bill comes through that would severely restrict the internet or would at least allow someone to shut down a website without any sort of due process. Luckily, groups like the EFF are paying attention and are well organized for getting the word out there. This post was our stand against the current bills that threaten our internet freedom.

Finally, on a lighter note, we have a post about how to do ultrasonic welding on the cheap using a ‘heat staker’ and a small drill press.