Fab Academy 2019
Learn how to make ALMOST anything!

Electronics Design

 

For this week's assignment, It was required to:
Individual Redraw the echo hello-world board-3D scan an object
Add (at least) a button and LED (with a current-limiting resistor)
Check the design rules, make it, and test it
Group
Use the test equipment in your lab to observe the operation of a microcontroller circuit board

Eagle
EAGLE is a scriptable electronic design automation (EDA) application with schematic capture, printed circuit board (PCB) layout, auto-router and computer-aided manufacturing (CAM) features. EAGLE stands for Easily Applicable Graphical Layout Editor and is developed by CadSoft Computer GmbH. The company was acquired by Autodesk Inc. in 2016.
Eagle is the most preferable because a lot of open source projects are available in eagle .It is easy to use easily understandable and have a well back of active users. Starting with eagle
First thing to do is install Eagle, after that, set it up. Once Eagle is installed, download the Fab library that provides you with all the components you need for this board.

To implement your board on Eagle, you need few steps:
1. Sketch your board in Schematic view and connect the components.
2. Switch to board view and arrange your components.
3. Route your components.
4. Check your board by ERC (Electical Rules check) and DRC (Design Rules Check).
5. Prepare your board for machining as previouly done in Electronics Production week.

Fire up the eagle software and a new project can be created from the file menu

Right-clicking on the project menu provides more options on to create a new scheme, board library etc.

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After adding the components, connect them using the "wire" option. Sometimes, connections get messy; so as optimization, name your connections you want to connect together using same names and you'll find eagle asking you if you want to connect themm; click "Yes". For that, use "Name" command. This is will make your schematic look a little bit neat, and it will be more organized. Finally, to avoid confusion, add "label" to connections.

Now we have to set the design rules for modella MDX200. For that I open "Design rules" under "Edit"

First open design rules

Then we need to set the Clearnce , we are using 1/64 bit for milling so here the trace will come around 16 mill.

Next we need to set the Distance ,it default value is 40 mil so we need to set the value corresponding to our bit that is 16 mil.

Next we need to set the Size of the Copper Trace , in defult 6mil, and we need to give 16 mil.

Now press OK

Setting up PCB

Now it is completely routed. I added an optimized border to it after that.

To export the mill trace and cut trace in .png format, we have to hide some layers.
Go to layers and click "Hide all layers".Also select "Top layer" to export.
tick Monochrome while exporting and set resolution to 1500.
Now repeat the same with cut line also

Now go to "File" and click "Export"

After that export the file into .png

Milling and Soldering

I explaind about the PCB milling procedure in the Week5 Electronics Production. same way i am using Modela MDX for milling the PCB.

Now we need to solder it. For that first I collected the components from inventory and solder it

HERO SHOT

Now I need to program it. For that I opened "Arduino IDE" and entered the code

You can download the whole project from here.

Group Assignment

This week's assignment was to use the test equipment in your lab to observe the operation. So let's meet with the electronics equipment’s
Multimeter
A multimeter is a tool for testing different parameters of an electronic circuit board. In our lab, we use UNI-T UT61A multimeter. You can download the user's manual from Here Tests can be done using Multimeter
  • VoltageCurrent
  • continuity
  • Resistance
  • Frequency
  • Capacitance

    • I used multimeter for testing continuity in my PCB

    DC Power Supply

    In falab kochi we use Gw instek GPD-3303D. You can download the user's manual Here
    Features

    • 2/3/4 Independent Isolated Output
    • 4 LED Display Sets: 3 digits after decimal point
    • Minimum Resolution:
    • 1mV/1mA (GPD-2303D/GPD-3303S/GPD-4303S)
    • 100mV/10mA (GPD-3303D)
    • Digital panel control (rotary encoder Switch, rubber key with indicator)
    • User-friendly operation, coarse/fine volume control
    • 4 Sets Save/Recall
    • Key-Lock
    • Output on/off
    • Tracking Series and Parallel mod
    • Smart cooling fan achieving low noise
    • USB Standard Interface
    • PC Software & USB Driver
    • Lab view driver

    Digital Oscilloscope

    In falab kochi we use UNI DSO-1100. You can download the datasheet Here
    Features

  • 100 MHz bandwidth, 1 M Memory
  • High resolution color LCD display
  • USB storage, RS232C & J45 interface
  • 4000 point record length for each channel
  • Multi-waveforms math, FFT Function
  • Built-in delay sweep function
  • Automatic Multi-waveform Measurement
  • Cursor & Track measurement
  • Waveform Record & Recall, Trigger Mode for Edge, Video, Pulse Width, Slope & Alternate
  • Display of date, clock and help information
    •

    Function Generator

    In falab kochi we use GW Instek AFG-2125 . You can download the datasheet Here
    Features

  • 0.1Hz to 25MHz with in 0.1Hz Resolution
  • Sine, Square, Triangular, Noise and Arbitrary Waveform
  • 20MSa/s Sampling Rate, 10 bit Vertical Resolution and 4k Point Memory for Arbitrary Waveform
  • 1% ~ 99% adjustable duty cycle for Square Waveform
  • Waveform Parameter Setting Through Numeric Keypad Entry & Knob Selection
  • Amplitude, DC Offset and Other Key Setting Information Shown on the 3.5" LCD Screen Simultaneously
  • AM/FM/FSK Modulation, Sweep, and Frequency Counter Functions (AFG-2100 only)
  • USB Device Interface for Remote Control and Waveform Editing
  • PC Arbitrary Waveform Editing Software
    •