Step |
Description of a metal sorting robot arm |
Costs |
1 |
You need a minicomputer called Raspberry Pi – people all over the world use it because it is so cheap. You also get used ones for less than 20 € |
10-20 € |
2 |
You also need an old screen and a keyboard – you can take stuff from the rubbish dump - it just has to work |
0-20 € |
3 |
You need two small servo motors and some small cables to connect your RasPi with the motors |
15-40 € |
4 |
Fix motor one on a wooden plate and fix the second one above it – so you can turn left and right and go up and down |
0 € |
5 |
Now fix an aluminum arm on the top motor – we used glue and two small screws |
0-1 € |
6 |
Install an electromagnet at the end of the arm – you find tutorials how to build it on the internet |
0 € |
7 |
Energize the electro magnet by connecting + and - >> again you find many tutorials on the internet |
0€ |
8 |
Connect the Raspberry Pi with the motor[1] |
|
9 |
Write a program using Scratch to control the motors and the electromagnet – again you find tutorials on the internet – we want to provide an example on our website soon |
0 € |
10 |
Now it should work – you only have to work on the timing |
0 € |
[1] https://www.google.at/search?q=how+to+control+a+servo+motor+with+a+raspi+using+scratch&client=firefox-b&source=lnms&tbm=isch&sa=X&ved=0ahUKEwjq2Lbb6ZjTAhVI1hQKHYy9CsMQ_AUIBygC&biw=1355&bih=869#imgrc=zSHkFWNMS1gAIM:
Polytechnical School Schwaz
Hubert-Danzl-Platz 2
6130 Schwaz
Phone: +43 5242 63344
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