week 12 and 13 - final project part 3

I combined 2 weeks' blog together because the final on other courses.


As I indicated in week 11, we did not provide enough effective research, so our project became "developing on the go".


The concept now is basically developed, but applying into real practice, we need more research and test. we have to experience the hardcore feeling, and then come the real development.

First, we only have the stepper motor, but we need a chip called ULN2003 to drive it! So, Lee's again. 

After we got the ULN2003 chip, we assembled the first prototype circuit that only drives the stepper motor.

Now we come to the Second problem, the mini Arduino board does not have a voltage regulator, so if we only use the 9v battery, then the accelerometer will be burned...

So, we need the the alternative, which is the original sized Arduino board, and a bigger container...

After this, is the crazy time consuming coding part, personally, I am dead on this process.