Liquid Flower

This article is about the liquid flower sculpture. The water is enclosed in a circular loop between the clear rubber tube and the water pump.

You can see how my moving sculpture works in this video:

This is zoomed in view:

You can see that the air bubbles inside the tube that creates a unique image of this sculpture.

Step 1: Make the Rectifier

Most pumps will break if you connect them in reverse polarity. Thus I made this diode rectifier to protect my pump:

I used a general-purpose diode.

Step 2: Make the sculpture

I used a green insulated metal wire to attach the pump to the basket.

Step 3: Testing

I connected the pump to 12 V battery. You have to be careful when you use such a high power source. Also, some pumps have a 9 V maximum limit. Thus connecting those pumps to a 12 V battery will result in the failure of the pump.

Conclusion

I should try using tubes of different colours. However, some coloured tubes are not as clear. You will not be able to see the bubbles.

Button Cell Car

This article is about my Button Cell Car project that moves the DC motor with a few button cells connected in series.

This is one of those Do Not Do This At Home projects because of high costs of button cells.

You can see my toy working in this video:

Step 1: Make the Car

When making the car each milligram is important. Initially I used blue tack. Then I started replacing blue tack with masking tape. I realised that the motor is not pulling the weight of the car.

Step 2: Testing

I tried adding connecting additional batteries in series. I found that my project went over well over budget with each button cell costing about $3 and quickly discharging when the turn ON the motor.

Conclusion

The article was accepted by Crazy Mechanics because it is a weird idea of making direct drive car without PWM (Pulse Width Modulation) controller. An alternative is the use of mechanical gears to obtain the required force needed to move the car.