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

Youtube channel idea

Pick java/android questions in Stackoverflow that are not complete projects and make videos that are supported by github. Value: When informatin is missing, it is difficult for novice people to use the answer in their projects.