Posts with «ultrasonic» label

Fire Fighting Robot

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What does it do?

Navigate a Maze, extinguish a flame, track position

I'm currently a sophomore at Worcester Polytechnic Institute studying Robotics Engineering. The third course in the series, RBE 2002, focusing on sensors. In a group of 4 students, we built a robot that could autonomously navigate a maze, locate a flame, put it out and report its X,Y, and Z position relative to its starting position. The robot was required to use an IMU and a flame sensor provided to us. All other sensors and parts are up to the group to use to complete the challenge.

Cost to build

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Finished project

Complete

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WALTER - The Arduino Photovore Insect Robot

Primary image

What does it do?

Navigate around and seeking light

[Please excuse my English]

Cost to build

Embedded video

Finished project

Complete

Number

Time to build

Type

URL to more information

Weight

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WALTER - The Arduino Photovore Insect Robot

Primary image

What does it do?

Navigate around and seeking light

[Please excuse my English]

Cost to build

Embedded video

Finished project

Complete

Number

Time to build

Type

URL to more information

Weight

read more

WALTER - The Arduino Photovore Insect Robot

Primary image

What does it do?

Navigate around and seeking light

[Please excuse my English]

Cost to build

Embedded video

Finished project

Complete

Number

Time to build

Type

URL to more information

Weight

read more

WALTER - The Arduino Photovore Insect Robot

Primary image

What does it do?

Navigate around and seeking light

[Please excuse my English]

Cost to build

Embedded video

Finished project

Complete

Number

Time to build

Type

URL to more information

Weight

read more

EG First 2nd rev bot

Primary image

What does it do?

Modified RC obstacle avoidance Car

Very new to this site. Been playing with this project on and off for 6 months. Completed once then went back to and it wasn't working. Tried to troubleshoot and burnt out the chip. Pulled out the whole circuit board. Then rewired the battery pack. At that point it is just the frame DC motors on front and back(front geared to turn right and left, back left as dc motor for fowards and back) . I pulled an H bridge chip from a motor drive expansion board and breadboarded it .

Cost to build

Embedded video

Finished project

Number

Time to build

Type

URL to more information

Weight

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Ultrasonic Collision Avoidance Arduino and Raspberry Pi

Hi;

I am building and testing a telepresence wheeled rover bot that has two methods of control:

1. Web Interface (Manual Mode): This consists of a control panel on a web page served using WebIOPi on a Raspberry Pi which, when activated, sends commands to an Arduino Nano AT Mega328P via a two wire i2c interface (Forward, Back etc). 

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This Cereal-Stealing Robot Will Swipe Your Breakfast

One Maker’s experiment in robotics results in an insatiable cereal transport system using Arduino, 3D printing, and Rice Krispies.

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The post This Cereal-Stealing Robot Will Swipe Your Breakfast appeared first on Make: DIY Projects, How-Tos, Electronics, Crafts and Ideas for Makers.

HC-SR04 Isn’t the Same as Parallax PING))) But It Can Pretend to Be!

“It’s only software!” A sentence that strikes terror in the heart of an embedded systems software developer. That sentence is often uttered when the software person finds a bug in the hardware and others assume it’s going to be easier for fix in software rather than spin a new hardware revision. No wonder software is always late.

[Clint Stevenson] is his own hardware and software guy, as are most of us. He wanted to use the less expensive HC-SR04 ultrasonic rangefinder in a prototype. Longer term he wanted to have the choice of either a Parallax PING or MaxBotix ultrasonic sensor for their better performance outdoors. His hardware hack of the SR04 made this a software problem which he also managed to solve!

[Clint] was working with the Arduino library, based on the Parallax PING, which uses a single pin for trigger and echo. The HC-SR04 uses separate pins. Originally he modified the Arduino library to accept the two pin approach. But with his long term goal in mind, he also modified the HC-SR04 sensor by removing the on-board pull-up resistor and adding a new one on the connector side to combine the signals. That gave him an SR04 that worked with the single-pin based library.

We’ve seen Parallax PING projects for sensing water depth and to generate music. These could be hacked to use the HC-SR04 using [Clint’s] techniques.

[Arduino and HC-SR04 photo from http://www.blaxlab.com/%5D


Filed under: Arduino Hacks, Holiday Hacks, software hacks

New Project: Build Your Own Android-Powered Self Driving R/C Car

Learn how a team of students created the first Google Android-based autonomous R/C car, able to detect lanes, avoid obstacles, self-park, and more.

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The post Build Your Own Android-Powered Self Driving R/C Car appeared first on Make: DIY Projects, How-Tos, Electronics, Crafts and Ideas for Makers.