Smart IC Tester

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Introduction: Smart IC Tester

We all know what IC Testers do... but for those who don't - IC Testers are devices which are used to test Integrated Circuits by sending in Pulses as per their Truth Table. Generally, IC number is fed into IC Tester and a comparison test is made against that particular IC's Logic Table.

A smart IC tester is far more capable and better than a generic IC Tester, it has an ability to detect and check the connected IC along with a manual mode. Our IC Tester features a Touch LCD which gives a better user experience and easy to understand UI.

IC Testers maybe costly instrumentation devices but this one is just under ₹1600( ~$25), pretty cheap right ?

Step 1: Let's Shop Some Stuff !!

Electronics

  • 1x Arduino Mega 2560
  • 1x 20 Pin ZIF Socket
  • 1x 2.4 inch TFT touch Screen LCD with inbuilt SD Card Slot
  • 1x 4GB MicroSDHC
  • 1x 6-pin Extra Length Female Header
  • 3x 8-pin Extra Length Female Header
  • 1x Male Header Strip
  • 2x WS2812B (Optional)
  • 2x 100 nF 0805 Capacitor (Optional)
  • 1x 180Ω 0805 Resistor (Optional)

Tools and Additional Supplies

  • Soldering Iron
  • Solder
  • A Laptop
  • USB Cable to connect Arduino Mega 2560
  • MicroSDHC Adapter

Step 2: Designing the PCB

I designed a shield for all components to fit-in and chose the Arduino Mega as my micro-controller board since both the ZIF Socket and LCD can be put side by side giving the build a compact and portable look and feel. I used Autodesk Eagle for the PCB Designing part (I've attached the eagle files below).

A big shoutout to guys at JLC PCB for sponsoring PCBs for the project. Do check them out they offer $2 PCB Prototyping and Free Shipping on First Order.

Step 3: Shut Up and Solder

Once you have all the components along with the PCB, just solder them in place as shown and you are ready to go !!

Once you're done with soldering put-on the LCD Shield and Female Headers and this completes your assembly for IC Tester.

Remember - "If it smells like chicken, you're doing it wrong" ;)

Step 4: Code? Yes..!!

Open up your Arduino IDEs and Open up the code... You can replace my name with your own so it boots up with your name. You're free to play around with colour schemes as per your choice.

All code files are available on GITHUB

Step 5: Preparing Database... a Time Consuming Task

I've compiled up a basic database for Component Tester that includes basic ICs. The database is in database.txt file on GitHub. Copy this txt file on SD Card and insert it in the Touch LCD Shield.

Thanks to instructable user JorBi for his Instructable - Arduino IC Tester from where I got inspiration to build one.

Pattern -

$[IC Number]

[IC Name]

[Pins]

[Test Case 1]

[Test Case 2]

...

[Test Case N]

Sample Test Case-

Say I have IC-7426, a sample test case would be

0000HHG000000V

Here 0/1 would be used to specify Input and H/L (High/Low) to specify output and V is used to denote VCC and G is used to denote Ground. Follow order from Pin 1, 2, 3, ..... 7, 8, 9, .... 14 for above IC

Step 6: Fingers Crossed !! Testing It All Together

Let's Upload the code and boot the IC Tester.

FINGERS CROSSED !!


And it worked great !!

Step 7: Happy Testing !!

You are welcome to contribute to the project and database on GitHub.

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    user

    We have a be nice policy.
    Please be positive and constructive.

    Tips

    10 Questions

    0

    can u give me solution for

    lcd screen can't display the image and it only turns red

    Hi

    how to insert library into arduino?

    The caps and resistor are for the leds, could you indicate what goes where

    Jim

    0

    Look close I marked the single R spot Black and two Blue caps for you..

    The way to figure it out, is the caps touch pin_1 which is the LED cut corner..

    R2C.jpg

    0

    How do you solve conflicts of arduino sending 0 to IC output pin, where is 1 and vice versa?

    Say I am actually (automatically) testing 4001 Quad 2-input NOR gate (2. entry in database), so the first 2 pins are inputs and for 00 3. pin is set by IC to 1 (first patter starts with 00H...)

    But the database starts with 4000 Dual 3-input NOR gate and inverter with first pattern 00000HG1LH000V so Arduino sets first 3 pins to output 000.

    And then on 3. pin Arduino is actively driving 0, while IC is actively driving 1.

    According to datasheets the IC Absolute Maximum rating for outpout pin is 10mA, while Arduino have Absolute max of 40mA and 20mA are listed under normal working conditions.

    So it is able sink 2x-4x more, than Absolute Maximum the tested chip can offer without risc of damaging - without any limiters on the way, if I understand the schema ... so possibly destroying the tested chip (mainly if it is somwhere much lower in the table, so there will be much more such conflicts foprced by testing before the right pin assignment is matched.)

    do you have the source with part numbers for the materials used?

    I would like to build this, but

    the zip file not acept in the web jlc ;(

    how do you format the text for new chips

    $4000
    Dual 3-input NOR gate and inverter
    14
    00000HG1LH000V
    00000HG0HH000V
    00001LG0HL100V
    00010LG0HL010V
    00011LG0HL110V
    00100LG0HL001V
    00101LG0HL101V
    00110LG0HL011V
    00111LG0HL111V
    how do you make this code for each chip?

    I've updated Step 5. Kindly Refer for answer.

    15 Comments

    I have ordered five pcb and only need one, email me if you are interested.they will be at my cost plus postage to you ( I am in Australia)

    I couldn’t pm you but if you have a pcb left I would take it off your hands? Cheers Kester

    I have a couple of boards left, where are you located so I can work out the postage

    Jim

    Nth Rockhampton Qld 4701 cheers Kester

    All up board and postage $15.00.

    My PayPal is barrow4491@gmail.com if you are interested (and your delivery address please)

    Thanks

    nice proyect congrats¡¡

    Great instructable thanks!

    Great project could you please upload the gerber files