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Archive for the ‘RC car’ Category

If you are a lover of all-things remote-conteolled, it’s likely that you know a thing or two about controllers. You’ll have one or two of the things, both the familiar two-joystick type and the pistol-grip variety. But had you ever considered that there m ight be another means to do it? [Andrei] over at ELECTRONOOBS has posted a guide to a tilt-controlled RC car. It is a good example of how simple parts can be linked together to make something novel and entertaining, and a great starter project for an aspiring hacker.

An Arduino Nano reads from an accelerometer over an I2C bus, and sends commands over a wireless link, courtesy of a pair of HC-12 wireless modules.  Another Nano mounted to the car decodes the commands, and uses a pair of H-bridges, which we’ve covered in detail, to control the motors.

The tutorial is well done, and includes details on the hardware and all the code you need to get rolling.  Check out the build and demo video after the break.

We’d love to see this idea turned up to 11 by using a more capable base vehicle, and finer controls on the steering– A Honda Civic perhaps?

[Thanks to Baldpower for the tip!]

Whether we like it or not, eventually the day will come where we have to admit that we outgrew our childhood toys — unless, of course, we tech them up in the name of science. And in some cases we might get away with simply scaling things up to be more fitting for an adult size. [kenmacken] demonstrates how to do both, by building himself a full-size 1:1 RC car. No, we didn’t forget a digit here, he remodeled an actual Honda Civic into a radio controlled car, and documented every step along the way, hoping to inspire and guide others to follow in his footsteps.

To control the Civic with a standard RC transmitter, [kenmacken] equipped it with a high torque servo, some linear actuators, and an electronic power steering module to handle all the mechanical aspects for acceleration, breaking, gear selection, and steering. At the center of it all is a regular, off-the-shelf Arduino Uno. His write-up features plenty of videos demonstrating each single component, and of course, him controlling the car — which you will also find after the break.

[kenmacken]’s ultimate goal is to eventually remove the radio control to build a fully autonomous self-driving car, and you can see some initial experimenting with GPS waypoint driving at the end of his tutorial. We have seen the same concept in a regular RC car before, and we have also seen it taken further using neural networks. Considering his background in computer vision, it will be interesting to find out which path [kenmacken] will go here in the future.

These toy cars are modified for sip-and-puff controls, where one lightly sucks or blows air as an interface.

If you have certain disabilities, use of your hands can be difficult if not impossible. An alternative is an interface known as sip-and-puff, which allows for control of electronics by producing a small air flow with your breath. In the build shown in the videos below, Bob Paradiso integrated this type of command into two types of RC vehicles.

To operate the first vehicle, one simply uses puffs to go forward, while sips make the car go backwards. The second is much more advanced, with a double-puff making the car go forward, a double-sip for backwards, and single puffs and sips to turn left or right.

There are many sip-and-puff controls on the market for various things, but they can be expensive or difficult to customize. What I’m showing here is an extremely affordable, simple to build, and fully customizable sip-and-puff setup used to control two different remote control toys that have very different controls.

You can see Paradiso’s writeup here and check out the code on the project’s GitHub page.

Gen
24

All-Terrain RC Car Has More Torque Than Your Grandpa’s Wheelchair

arduino hacks, musical hacks, RC car, RC robot, toy hacks Commenti disabilitati su All-Terrain RC Car Has More Torque Than Your Grandpa’s Wheelchair 

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[Charles] and his brother have been members of their school’s FIRST robotics team for many years, and using some of the knowledge they acquired during it, they have put together this awesome all-terrain, super over-powered, RC car — and soon to be robot.

It’s built like a tank using 1″ square steel tubing and custom corner brackets made of 1/8″ thick steel. Heavy duty U-bolts hold the over-sized 5/8″ axles, and everything is driven using #35 roller chain. A large 12V sealed lead acid battery powers two CIMs (FIRST Robotics motor) with the AndyMark CIMple gearbox – these give the car tons of torque, and it can even do wheelies!

The really cool part of this project is the method of remote control. He’s using a regular old Xbox controller that an Arduino Uno listens to through a USB host shield and the original Xbox USB receiver. Simple, but totally effective.

The project is not yet complete, and he’s planning on fully equipping it with lights, a larger battery, a roll-cage, a camera system, and some kind of manipulator tool. Check out the test drive video after the break!


Filed under: Arduino Hacks, musical hacks, toy hacks
Gen
15

Android+Arduino – Face Following RC Car

adb, Android, android hacks, arduino, arduino hacks, Face detection, opencv, RC car, toy hacks Commenti disabilitati su Android+Arduino – Face Following RC Car 

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To some of us, hacking an RC Car to simply follow a black line or avoid obstacles is too easy, and we’re sure [Shazin] would agree with that, since he created an RC Car that follows your face!

The first step to this project was to take control of the RC Car, but instead of hijacking the transmitter, [Shazin] decided to control the car directly. This isn’t any high-end RC Car though, so forget about PWM control. Instead, a single IC (RX-2) was found to handle both the RF Receiver and H-Bridges. After a bit of probing, the 4 control lines (forward/back and left/right) were identified and connected to an Arduino.

[Shazin] paired the Arduino with a USB Host Shield and connected it up with his Android phone through the ADB (Android Debug Bridge). He then made some modifications to the OpenCV Android Face Detection app to send commands to the Arduino based on ‘where’ the Face is detected; if the face is in the right half of the screen, turn right, if not, turn left and go forward.

This is a really interesting project with a lot of potential; we’re just hoping [Shazin] doesn’t have any evil plans for this device like strapping it to a Tank Drone that locks on to targets!


Filed under: Android Hacks, Arduino Hacks, toy hacks
Ago
29

DIY toy car Drone Featured at World Maker Faire

arduino, diy drones, General, Maker Faire, RC car, Robotics Commenti disabilitati su DIY toy car Drone Featured at World Maker Faire 

rc-front-hiresThis toy car kit, which the creators call the RoboTech SuperCar, will be demonstrated at World Maker Faire next month. It's Arduino powered with RGB LED headlights and tail lights, an ultrasonic sensor, and a 24-pin RC bus that interfaces with RasPi, Teensy, or any other microcontroller.

Read more on MAKE



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