ELECTRONICS PRODUCTION

THE FABISP

BACKGROUND.
This week will be my first attempt at making my own circuit board. I have some initial knowledge as it is done in the Fab Lab, but it's the first time I have the task of manufacturing my own board from scratch.
The machine we have in the Fab Lab is a Roland Monofab SRM-20. The following image presents its main characteristics.

The FabISP is an in-system programmer for AVR microcontrollers, designed for production within a FabLab. That is, it allows you to program the microcontrollers on other boards you make, using nothing but a USB cable and 6-pin IDC to 6-pin IDC cable.



GROUP ASSIGNMENT

CHARACTERIZE THE SPECIFICATIONS OF YOUR PCB PRODUCTION PROCESS

I missundestood this part of the assignment. I though that the first part of the production of the pcb was in a grou to undestand the process and then the soldering and programming individually. Now I undestand we need to test the machine and the possibilities and limitations of it. Like we did with the laser cutter machine.


1. On the FabAcademy page. Open this links in blue on another window. http://academy.cba.mit.edu/classes/electronics_production/index.html
2. Traces is the png file for to trace the board. Download file
3.Interior is for the outline of the PCB, is the one that cuts the shape. Download file
4. 1/64” is the aproximation of the result I am going to get with that diameter of mill.
View image

5. 0.0010” is the aproximation of the result I am going to get with that diameter of mill
6. With modules we will generate the G code wich is a .rml open Fab Modules
7. In Input format select image PNG. In the browser I selected the png I downloaded before, named linetest.png
8. On output I selected Roland Milling (.rml)



9. On Process / for the traces png file / 1/64
10. Output selected srm-20
11. The values x, y, z on 0


12. Press calculate and wait
13. I saved the file
14. I did the whole process again with the linetest.interior.png file, but with a little different configuration in the millin. It is 1/32
16. I Saved the files on a USB.
17. The machine we have in the Fab Lab is a Roland Monofab SRM-20
18. We cut the tests with two different mills
19. 1/32 above and 1/64 below




INDIVIDUAL ASSIGNMENT

MAKE AN IN-CIRCUIT PROGRAMMER BY MILLING THE PCB

In the process of writing





coming soon