Week Four: Electronics Production.

Overview

For this week's assignment, It was required to make an in-circuit programmer. It was required to mill the board, stuff it with components and program it.

What is the FabISP?

The FabISP is an in-system programmer for AVR microcontrollers, designed for production within a FabLab. It allows you to program the microcontrollers on other boards you make.

Downloading the traces and milling the board:

1st: Setting up the Modela:

This is an important step before begining to mill. You can check the steps in details in the tutorials here on Fab Academy website, detailed and useful.

2nd: Milling the traces:

This is how the traces look.

Using Fab Modules, the rml is created and begin milling.

3rd: Cutting the board:

This is how the outer looks.

Using Fab Modules, the rml is created and begin milling. This is how it looks.

This is how it ends. PS: For integrity, This picture is taken from the tutorial page as I forgot to take shots of mine before soldering the components.

Soldering the Components:

1st: The Required components:
  • 1 ATTiny 44 microcontroller
  • 1 Capacitor 1uF
  • 2 Capacitor 10 pF
  • 2 Resistor 100 ohm
  • 1 Resistor 499 ohm
  • 1 Resistor 1K ohm
  • 1 Resistor 10K
  • one 6 pin header
  • 1 USB connector
  • 2 jumpers - 0 ohm resistors
  • 1 Cystal 20MHz
  • two Zener Diode 3.3 V
  • one usb mini cable
  • one ribbon cable
  • two 6 pin connectors

    • 2nd: Soldering components and final product:

    Programming the Board

    Getting the board to program for the 1st time on windows requires few steps to be done.

  • Download and Install WinAVR.
  • Download the drivers.
  • Download the FabISP Firmware.
  • Plug in another FabISP or USBtiny programmer.
  • Install the drivers

    • And here, we go.