Rocket Launcher

Rocket Launcher

Hardware

This uses 3 motors and 2 sensors. On the controller it uses the Touch sensor as the trigger button and the color sensor as an indicating light. There is also a motor on the controller that controls the angle of the launcher. It s linked with the motor that moves the launcher up and down. The third motor moves a 5m beam up and down. When the beam is up it holds the rocket back, and when you press the touch sensor, the beam is pulled down and the rocket is released. The rocket is down a ramp by a rubber band and then fly’s of the ramp.

Program

The program is pretty simple. First you pull the rocket back with the rubber band than turn the black knob to move the beam up – as soon as the beam is about halfway up the motor begins to turn to make sure its all the way up then lock. you can then use the motor on the controller to move the launcher up and down. then you press the orange button and the launcher locks its position and waits for you to press the touch sensor – when you press the touch sensor the rocket is released and the program starts over again.

You can download the program here.

Building Instructions

BOM
You can download the Building instructions here(PDF).

You can download the LDraw files here(Zip).

Next project: Rocket launcher

Next project: Rocket launcher

Working on my next robot, rocket launcher – and it is working pretty well.

Beam Shooter

Beam Shooter

A simple robot that shoots beams and other things that are the same thickness like pencils and bushings.

Hardware

There are 2 main motors geared up 32 times it’s speed –  which makes up o 4000 RPM output. shooting the beams very fast and pretty far. At the back there is a gear box (from and OLD BIONICLE set I think) and that adjusts the angle of the shooter up and down. The controller is one motor on the side for controlling the speed and a light sensor for indication the speed range (0-11 is red 12-75 is blue and 75-100 is green) and information is displayed on the screen – read the next section for more info on that.

Program

The program does a simple task of turning 2 motors but displays a lot on the screen. First it resets the motor on the controller and then the program is started. You use the motor to control the power – every degree = 1% of power. This program calculates the RPM and displays it in a bar and the number. it also displays the % power and the Output RPM. The RPM calculation is from NXT Programs: 3-Speed Transmission with Clutch.

You can download the program here.

My next project is probably going to b a rocket launcher.