INPUT DEVICES
For this assignment the goal is measure something. For that we have to add a sensor to a self-made
microcontroller board. I want tu use ultrasonic sensor HC-SR04 because I want to use two of them for my final project. This
sensor has been designed to measure distances, but it has a lot of aplications. For this task I want to understand how the sensor works taking
distances, it is a very simple way to make the sensor work.
For me progamming is something new. So I have decided star with Arduino UNO that is easy, and then I will try with my own self made Fabduino.
1. ARDUINO
Arduino IDE:
![](images/sesion10_foto1.png)
Arduino hardware:
![](images/sesion10_foto2.png)
You can see a video here:
2. FABDUINO
To fabricate my own Fabduino I have gone to http://fab.cba.mit.edu/content/projects/fabkit/ and from there I have Download Eagle archives: schematic and board.
![](images/sesion10_foto3.png)
![](images/sesion10_foto4.png)
I have worked with Roland Modela running on Ubuntu. If you want to know more about this technique of fabrication you can go to the assignment Electronics Design.
![](images/sesion10_foto5.png)
![](images/sesion10_foto6.png)
![](images/sesion10_foto7.png)
It has been very difficult to do the holes on the board:
![](images/sesion10_foto8.png)
Here is the Fabduino complete:
![](images/sesion10_foto9.png)