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I'm an absolute beginner to making robots.

I'm looking to make a robot using the Rover 5 (4 motor with 4 encoders), and an arduino as the brains.

Based on what I've read, to drive all 4 motors as well as read all the encoders, the arduino UNO doesn't have enough pins, so an Arduino MEGA or Red Back Spider is needed.   as well as the Dagu 4 Channel 5-12V, 2A Brushed DC Motor Controller, or something similar which provides enough power to the motors, and communicates with the arduino (or spider).

First question is, is the above correct?

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[Florian Amrhein] made use of some old hardware to build his own internet radio in a 1930′s radio case.

The original hardware is a tube-amplified radio which he picked up on eBay. There’s tons of room in there once he removed the original electronics and that’s a good thing because he crammed a lot of new parts into the build. The main one being an old laptop he had on hand. It’s got a 10″ screen which is too large for the opening, but that ended up being okay. He coded an interface with C and SDL which give him a visual representation of his favorite online streams. The knob to the right moves the red line when turned and causes the Debian box to change to the new stream using the Music Player Daemon. Two potentiometers control the tuning and volume, and there is also a rotary encoder which is not yet in use. All three are connected to the laptop via an Arduino.

Check out the finished product in the video after the break. It sounds quite good thanks to the small automotive speaker and amplifier also crammed into the old case.

If you don’t have a laptop lying around to use in a project like this consider a microcontroller and character LCD based system.

This unique electronic instrument combines a chopped up guitar and a hacked apart glockenspiel with an Arduino. [Aaron]‘s Glockentar consists of guitar hardware and glockenspiel keys mounted to a wood body. Solenoids placed above the keys actuate metal rods to play a note.

Under the hood, an Arduino connects the pieces. The conductive pick closes a circuit, which is a digital input into the Arduino. This actuates the corresponding solenoid to play the glockenspiel key, and sends a character to a computer over serial.

On the computer, an openFrameworks based program creates lighting that is projected onto each string. MadMapper is used for projection mapping, which maps the openFrameworks output to each string. Video is passed between applications using the Syphon framework.

[Aaron] has provided a write up that goes into details, including the Arduino and openFrameworks source for the project. There’s also a video overview and demo of the Glockentar after the break.

I have an arduino rbbb for my robot and i want to upload sketches wirelesly via wixel and wixel shield.. I am asking because at the description of wixel-shield says that it will not work with arduino Leonardo.. and i am wondering if that also happens with rbbb. It's not an official arduino so that's maybe the reason why it is not mentioned if they are not compatible. Any suggestions would be very helpfull.. thank you!

[Massimo], one of the creators of the Arduino, is a little perturbed over what passes for the truth over on Kickstarter.

While [Massimo] does recognize that Kickstarter can be a force of good launching garage-designed projects into the hands of willing consumers, he noticed something was a little fishy with the recent smARtDUINO kickstarter (notice the capital letters, by the way). Right near the top of the smARtDUINO’s kickstarter page is the phrase, “For years we manufactured the ARDUINO in Italy. Now we created a new Open System: modular, scalable, the world’s cheapest and smallest!”

Being at the top of the Arduino organization, you’d think [Massimo] would have heard of these former Arduino manufacturers. The name didn’t ring a bell to him, so he called up the factory. No one at the factory had heard of them, and after a long search it was finally revealed the head of the smARtDUINO project hired two factory workers who worked for a supplier the official Arduino manufacturer uses.

[Massimo] makes the comparison of, “if he hires two factory workers from Ford he can claim he used to manufacture Ford cars.” We’re thinking that’s a little generous. It’s more like hiring two people who used to restock the vending machines in a Foxconn plant and claiming you used to build Apple computers.

With a simple trademark infringement on his hands, [Massimo] contacted Kickstarter to see what could be done. Kickstarter replied:

Thanks for writing in and bringing this to our attention. This is a matter that must be taken up directly with the project creator. You can contact them by clicking “Contact me” on the project page.
Best,
Kickstarter

For [Massimo], and us, that’s just not a sufficient answer. We’re thinking Kickstarter has an obligation to vet their projects and make sure the creators of these projects are who they say they are.

But enough about what we think. What do you, the Hackaday reader, think about this situation?

We've seen attempts at recreating video game racing in real life. For Artica and The Arcade Man, there's no desire to preserve the illusion -- they've jury-rigged two Sega Rally cabinets to control the strictly real-world racing experiences of RC cars. Their two-machine setup from the recent Codebits VI event in Portugal yanks the original arcade computing power in favor of an Arduino-powered system that maps the steering wheel and pedals to the tiny vehicles through a wireless Xbee link. The setup does make a nod to traditional video games through the cameras, however: drivers can pick either an arcade-style overhead camera or jump to a cabin-level view. The only true challenge during the build process was to find viable displays for the rigs, as the original CRTs proved too problematic for the retrofit. Some might consider it sacrilege to gut a classic cabinet for the sake of some RC action, but the end result is a racing experience that's at once very familiar and yet surprisingly fresh. Spectators had better watch their feet, though -- the competition might get fierce out there.

Continue reading Arduino project has Sega Rally cabinets steer RC cars: like the game with more bruised ankles (video)

Filed under: Gaming, Transportation

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Source: The Arcade Man

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Concept:

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End-of-year engineering school projects often pique our interest for their creativity. It's not every day that they can carry a bassline, however. James McVay's robot project for his honors year at the Victoria University of Wellington, the supremely well-named MechBass, wouldn't have much trouble keeping up with a favorite band. It centers on a custom, Arduino-compatible board that controls the plucking, fretting and damping of four strings to faithfully recreate bass guitar sounds from MIDI input. The design even accounts for the unwanted noises of actuators and motors, while virtually everything was either 3D-printed or laser-cut just for the task at hand. Sounds good? There's more in the pipeline: an upcoming Swivel robot will experiment with different playing techniques, and McVay ultimately sees his work teaching us about robotic music's interaction with human performers. For now, we'll be happy with the video after the break and hope that MechBass takes requests.

Continue reading MechBass robot nails bass guitar sounds with Arduino and a stone cold groove (video)

Filed under: Robots, Alt

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Source: Hack A Day