How to Make a Solar Top Robot (2)

Now we start to make the mechanical part.

First we cut the board as an equilateral triangle. It should put three 2200uf capacitors and mini motor in the triangle circumcircle. See the below photo.


Pull the three clips straight, connect head and tail curved into a circle frame. Put the capacitors and mini motor in the circle. The solar panel install on the board.

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How to Make a Solar Top Robot (1)

Make a Robot is not easy, but also not very difficult. Here we start from an easy example – Solar Top. It has below function:

1. Rotator under sunshine

2. Come back if meet Obstacle

3. Keep stay in no sunshine place.

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Water Powered Barrel to Supply Energy

A new design for a hydroelectric generator could cheaply light up off-grid areas. The Hydro-Electric Barrel is a spinning water wheel that floats on the water surface and turns in the current. The spinning motion drives permanent magnet generators inside. It could generate enough power to light banks of LEDs and light up bridges, buoys, or even charge mobile devices in off-grid areas and developing countries. And, because it sits on the surface, it doesn’t disrupt the environment as much as other hydro-power technologies.

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How to set up mini motor speed measurement device

The speed measurement device include: electric motor, permanent magnets, magnets holder, Hall speed test board, Dupont Line.


1. Put the magnets in the holder.

2. The magnets have two poles, the Hall device is only effective for one pole, so first, we should check if the magnets are installed correctly.

Use oscilloscope to connected one output of the hall speed test board, connect the 5V power supply to the board, then move the magnets close.

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How to Choose Mini Motor for RC Model Hobby

If make RC model project, we will use the mini motor. So how to choose the correct mini motor is very important.

The three kinds mini motors are often used for the RC model: DC Motor, Stepper Motor, and Servo Motor.

DC motor: It's used for drive the the robots movements. If connect power, the motor will continue working. If change the "+/-", the motor rotator direction will be changed. The DC motor price is low, very suitable for the most application.

          
    Mini DC Motor                      Mini DC Gear Motor

Stepper Motor: It's a kind of DC motor, that can divide a full rotation into a large number of steps. The motor's position can be controlled precisely without any feedback mechanism (an open-loop controller), as long as the motor is carefully sized to the application.

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