General

We will continue of course with our machine. Now to insert the electronic parts that will make it move. For now it will be Arduino. This will be part of my final project, so in the near future I will remake it with a PCB board.

$Descripción: C:\Users\Rafael\Documents\Fab_Lab\Fab_Academy\Documentation\Week17_MachineDesign\IMG_20180510_164952.jpg$

What I need

hardware

· Screwdrivers

· Arduino board

· Cables

· Motor driver Nema A4988

Software

· Arduino program

group assignment

So far I was designing the general Machine and Ileana, my partner is in charge of the sensor and the little details of the machine like bearings (that we fabricated by ourselves). Now I will attach the arduino and cables to the machine, she will do the web page of the assignment and both will program the Arduino with the help of our friend Jesus

actuate and automate your machine

We are checking references. Last year in Barcelona a group did also a solar tracker . The difference is that they have one axis rotating at the bottom. Ours is more like the rotocasting machine another student did before (rotational casting machine by Saverio). So it is a combination of both.

Descripción: http://archive.fabacademy.org/archives/2017/fablabbcn/students/2/Pictures/11_Machine_Design/IMG_1861.jpg Descripción: http://fabacademy.org/archives/2015/eu/students/silli.saverio/image/15/image01.jpg

Document the group project and your individual contribution

First try

1. Collect the components. Arduino Pro-Mini and Nema driver.

2. Download the Arduino code that the Solar tracker team did in Barcelona last year, as reference.

3. Try to connect everything like this, but mounted on the structure

Descripción: http://archive.fabacademy.org/archives/2017/fablabbcn/students/2/Pictures/11_Machine_Design/two%20STEPPER%20with%20four%20LDR_bb.jpg

4. Put the 4 photo-resistances in the base. We put some tape in the back so the sensor keeps in place. Otherwise they are kind of loose.

$Descripción: C:\Users\Rafael\Documents\Fab_Lab\Fab_Academy\Documentation\Week17_MachineDesign\IMG_20180512_153504.jpg$

5. The resistance for the sensor

6. Checking the sensors. Put all the sensor in a bread board and test the arduino code

$Descripción: C:\Users\Rafael\Documents\Fab_Lab\Fab_Academy\Documentation\Week17_MachineDesign\IMG_20180513_111124.jpg$

Close to 1023 under shadow, lower when the light comes

7. Video Solar tracker arduino test

Embeber

8. Fixed the components to the frame. Arduino and breadboard

$Descripción: C:\Users\Rafael\Documents\Fab_Lab\Fab_Academy\Documentation\Week17_MachineDesign\IMG_20180512_172634.jpg$

9. Connect the power source. 12v

$Descripción: C:\Users\Rafael\Documents\Fab_Lab\Fab_Academy\Documentation\Week17_MachineDesign\IMG_20180512_184713.jpg$

10. Connected the sensors to the arduino and bread board mounted into the frame

$Descripción: C:\Users\Rafael\Documents\Fab_Lab\Fab_Academy\Documentation\Week17_MachineDesign\IMG_20180513_111131.jpg$ $Descripción: C:\Users\Rafael\Documents\Fab_Lab\Fab_Academy\Documentation\Week17_MachineDesign\IMG-20180513-WA0041.jpeg$