Robots

My backyard was filled with clotheslines, so I decided to create an aerial ropeway that could measure the length of a rope. The ropeway has two ultra-sonic sensors - one for each direction. This allows the ropeway to stop before it hits an object. The ropway is controlled from a PC with the Bluetooth...

A brick sorter is a classic mindstorms project. I've seen a lot of great brick sorters on the web. On the ones I've seen the bricks are manually placed on a belt or a slide and afterwards sorted by color. I decided to make a bricksorter where you just place all the bricks in a tray and let the machine...

With the candy machine you can draw three different types of candy and insert three different types of coins. Therefore the machine consist of two sections a "coin-section" handling the coins and a "spiral-section" that handles the candy. This combined with the fact that the machine uses 4 light sensors,...

I took an old fan from a CPU-cooler and created a cooler that is very simple but at the same time very practical. The program is made in LeJos  and uses the view button to choose between the three following modes The fan is off The fan is on The cooler moves backwards and forwards ...

The NXT image scanner is a "stand alone" scanner that can scan and save images as a BMP-file in the NXT's flash memory. Images can be saved in either 24-bit true color, 8-bit color or gray scale. Gray scale images are scanned using the light sensor whereas color images are scanned using the HiTechnic ...

My pinball machine is built on a rectangular ”plate”, where there is made room to mount the ”feet” on the sides. I got the inspiration for this from Mario Ferraris homepage . After that it was only a question of making appropriate obstacles on top of the ”plate”. The program itself is written in LeJos  a...

The plotter can draw on a piece of paper. The pen is moved up and down using pneumatic which means that it can be placed tightly onto the paper without applying too much pressure. This solution however slows downs the writing process, as raising and lowering the pen is quit slow. The paper is firmly ...

In order to get the scanner working I had to make a program that could convert light sensor readings into an image. This was done using Visual Basic andspirit.ocx. The program called ScanControl allows you to chose between two different resolution of about 25 dpi and 50 dpi - this means that the scanner...

The RFID Rover can find its way around a predefined track using my RFID-reader , a light sensor and the Hitechnic compass sensor. A track consists of a number of waypoints/RFID-tag. Along with the layout of the track the direction/angle between the waypoints are descried in the Rovers program. When...

Inspired by  Philo’s Spy Camera Rover  the spybot is a compact rover equipped with a wireless camera two ultrasonic sensors, a compass sensor and a third motor to tilt the camera up and down. It was originally design to test my remote  but as it turned out the robot was so much fun to control via Blue...