A4 - Electronic Production

Group Assignment

Individual Assignment

This assignment is about to make a in-circuit programmer. The FabISP is a in-system programmer for AVR micro controllers yo can use this boar to program another boards.

You can jump quickly to the section with the below links.

PCB Fabrication
Assembling the PCB
Improve the USB Connector
Check Your Work
Software Installation
Get and Build the Firmware
Program the ATtiny45
Test the USB Functionality
et and Build the Firmware)

Group assignment -Characterize the design rules for your PCB production process

For the first assignment we have to find out about the settings for the the Roland Modela MDX-20 3D Milling Machine

We stick the PBC stock material to the plate with doubled sided tape, and we calibrated the Z axis using a paper sheet

We use the MODS module for generate the G-Code for the milling

Each board took about half and hour to finish, we make different test with speeds and Z axis heights

At the beginning the board look very rough but after a little sanding you can look at the final result

Each board took about half and hour to finish, we make different test with speeds and Z axis heights

A 4.2 individual Assignment -Make an in-circuit programmer by milling and stuffing the PCB, By milling and stuffing the PCB, test it, then optionally try other PCB processes

Process:

I decided to use the A Tiny 44 from the Fab Academy Repository

I use Mods to trace the G Code

After milling the board I have a weld all the components

It was very hard because I didn´t have any experiences soldering electronic

This is the final result

I have to check if the connection works

Programming

http://fab.cba.mit.edu/classes/863.13/tutorials/EmbeddedProgramming/echo.html

Programming ATtiny with an arduino.

For porgramming the ATtiny with an arduino I need a 10uF Capasitor

http://highlowtech.org/?p=1706

## [PCB Fabrication]

Last year I based my project using a A Tiny 44, but Neil said that they were out of date, so I´m going to follow the steps on this guide for Building the FabTinyISP. http://fab.cba.mit.edu/classes/863.16/doc/projects/ftsmin/index.html This guide is also based on Zaerc's FabTinyStar page

First I downloaded the PNG files for the traces and the board outline: