Minecraft scratch server

Minecraft scratch server hosted on the cloud for collaborative coding. See Using Scratch with Minecraft & Scriptcraft

Auto plant waterer

Waters plants when we are away from home for more than a few days.

Foosball robot

Foosball robot

Competition ideas

• Best video explanation of caucasian folklore. See a good example.
• Best caucasian music with explanation. See a good example.

Convert chandeliers to LED (AC to DC)

Add AC to DC converter to base of chandedlier, change the lamps with high power LEDs.

For DC conversion you can use power adaptors, but they usually have 5V, so might need one with more V output.

Car IoT

Scenario: A toy car with a light sensor should drive through a dark tunnel. The car should transmit position and light intensity information to server. A second toy car should drive the same route and when it arrives at the tunnel, it should light up its LED.
What I need:

• A remote controlled toy car with LED, light sensor, computer and WiFi. Use Lego Mindstorms (LM) EV3.
• A server that listens to and broadcasts light intensity data.

Version plan:

• Version 1: Save data on LM.
• Save data on LM. Use number of wheel turns to approximate distance travelled. How do you persist data on LM?
• How to light up an LED with LM.
• Version 2: Use (local IP), host server on your laptop.
• How to transmit data from LM to server via WiFi.
• How to get data from server via WiFi to LM.
• Version 3: Use VPS and static IP.
• Version 4: Access data from an Android smartphone.
• Version 5: Use IMU to calculate distance.

Solar system model with magnetic levitation

See Story the levitating timepiece