Communication ECA Phase 1 Class 1: Car Race 20170911

Hello! It was really great meeting you all last week! Last class we built a model car using a battery pack and a motor. We learnt about connecting gears and used our knowledge of gear ratios on our cars! We found out that when the big gear is attached to the motor it spins the small gear faster giving our cars more speed. Everyone really enjoyed the race we had afterwards to test our models. Next week we will keep working on trying to keep our Lego pieces organized and together as we build our next model. I look forward to seeing you all!

Lego EV3 Motor Controller

Welcome to the second class of Lego Challenge Level IV program. Today we are explored the powerful PID motor position controller. This controlling concept is used everyday in our life, such as elevator, CD player, fan, car steering etc.  It is a little bit hard in the beginning. I will keep explain the concept and debug your program for next few classes. The final goal is to have some advanced technology for real world engineering challenges.  

letter balance

Today we built a scale for weighing different small things which are wheels, cup of water, and lego blocks. It is a little bit more challenge than last time but since we got them to start asking helps from their neighbors  It is an important social skill to have.  Stepping out of their comfort zone. Some are brave enough to seat in class without their parents and some are cool enough to make friends. I’m really happy to see them having fun and solving problems together.  

Intro to Lego Mindstorm EV3 and build color reader robot

Welcome to the Lego Mindstorm EV3 robot programming challenge. The first class, we built a two wheel tank drive robot for the future class. We also build a color reader robot that can scan the color, then read out for you forever. Kids are excited about. Everyone tested their robot with rubik’s cube.  The science behind it are loop, switch and color sensor. Next week we will explore the other sensor’s from lego. All students also helped to cleanup the classroom. 


On Friday, we built a powered car to let the kids get a sense of how different gears and wheels will have an impact on how fast the car can go.  We have some kids like Leo that is really young who will have some problem finding the pieces and building it, but it is a good process of learning by asking questions and talking to strangers.  We also have kids like Will that is a vet in building Lego.  They are willing to help those who is in trouble.  They make the class going much smoother than only me and Roy being the helper.  In the end they raced their car and learned how different combinations of gears and tires will affect the speed of a car.  It was a really good first day of class.