Free Project - 245 LED Display

[Luciano]

This is the rest of the LEDs test.

TEST 4

T4/Step 1:

All the ICs must be removed from the sockets, with the exception of
the 5V voltage regulator. The seven 18 ohm resistors must be replaced 
with 180 ohm resistors.

In TEST 4 will will test all the LEDs driven by ROW3.

Connect P1 to the socket IC1/PIN10 (ROW3).

T4/Step  2: Connect P2 to the socket IC7/PIN7 (COL35),verify the LED.
T4/Step  3: Connect P2 to the socket IC7/PIN4 (COL34),verify the LED.
T4/Step  4: Connect P2 to the socket IC7/PIN2 (COL33),verify the LED.

T4/Step  5: Connect P2 to the socket IC6/PIN9 (COL32),verify the LED.
T4/Step  6: Connect P2 to the socket IC6/PIN6 (COL31),verify the LED.
T4/Step  7: Connect P2 to the socket IC6/PIN5 (COL30),verify the LED.
T4/Step  8: Connect P2 to the socket IC6/PIN1 (COL29),verify the LED.
T4/Step  9: Connect P2 to the socket IC6/PIN10 (COL28),verify the LED.
T4/Step 10: Connect P2 to the socket IC6/PIN7 (COL27),verify the LED.
T4/Step 11: Connect P2 to the socket IC6/PIN4 (COL26),verify the LED.
T4/Step 12: Connect P2 to the socket IC6/PIN2 (COL25),verify the LED.

T4/Step 13: Connect P2 to the socket IC5/PIN9 (COL24),verify the LED.
T4/Step 14: Connect P2 to the socket IC5/PIN6 (COL23),verify the LED.
T4/Step 15: Connect P2 to the socket IC5/PIN5 (COL22),verify the LED.
T4/Step 16: Connect P2 to the socket IC5/PIN1 (COL21),verify the LED.
T4/Step 17: Connect P2 to the socket IC5/PIN10 (COL20),verify the LED.
T4/Step 18: Connect P2 to the socket IC5/PIN7 (COL19),verify the LED.
T4/Step 19: Connect P2 to the socket IC5/PIN4 (COL18),verify the LED.
T4/Step 20: Connect P2 to the socket IC5/PIN2 (COL17),verify the LED.

T4/Step 21: Connect P2 to the socket IC4/PIN9 (COL16),verify the LED.
T4/Step 22: Connect P2 to the socket IC4/PIN6 (COL15),verify the LED.
T4/Step 23: Connect P2 to the socket IC4/PIN5 (COL14),verify the LED.
T4/Step 24: Connect P2 to the socket IC4/PIN1 (COL13),verify the LED.
T4/Step 25: Connect P2 to the socket IC4/PIN10 (COL12),verify the LED.
T4/Step 26: Connect P2 to the socket IC4/PIN7 (COL11),verify the LED.
T4/Step 27: Connect P2 to the socket IC4/PIN4 (COL10),verify the LED.
T4/Step 28: Connect P2 to the socket IC4/PIN2 (COL9),verify the LED.

T4/Step 29: Connect P2 to the socket IC3/PIN9 (COL8),verify the LED.
T4/Step 30: Connect P2 to the socket IC3/PIN6 (COL7),verify the LED.
T4/Step 31: Connect P2 to the socket IC3/PIN5 (COL6),verify the LED.
T4/Step 32: Connect P2 to the socket IC3/PIN1 (COL5),verify the LED.
T4/Step 33: Connect P2 to the socket IC3/PIN10 (COL4),verify the LED.
T4/Step 34: Connect P2 to the socket IC3/PIN7 (COL3),verify the LED.
T4/Step 35: Connect P2 to the socket IC3/PIN4 (COL2),verify the LED.
T4/Step 36: Connect P2 to the socket IC3/PIN2 (COL1),verify the LED.

TEST 5

T5/Step 1:

All the ICs must be removed from the sockets, with the exception of
the 5V voltage regulator. The seven 18 ohm resistors must be replaced 
with 180 ohm resistors.

In TEST 5 will will test all the LEDs driven by ROW4.

Connect P1 to the socket IC1/PIN9 (ROW4).

T5/Step  2: Connect P2 to the socket IC7/PIN7 (COL35),verify the LED.
T5/Step  3: Connect P2 to the socket IC7/PIN4 (COL34),verify the LED.
T5/Step  4: Connect P2 to the socket IC7/PIN2 (COL33),verify the LED.

T5/Step  5: Connect P2 to the socket IC6/PIN9 (COL32),verify the LED.
T5/Step  6: Connect P2 to the socket IC6/PIN6 (COL31),verify the LED.
T5/Step  7: Connect P2 to the socket IC6/PIN5 (COL30),verify the LED.
T5/Step  8: Connect P2 to the socket IC6/PIN1 (COL29),verify the LED.
T5/Step  9: Connect P2 to the socket IC6/PIN10 (COL28),verify the LED.
T5/Step 10: Connect P2 to the socket IC6/PIN7 (COL27),verify the LED.
T5/Step 11: Connect P2 to the socket IC6/PIN4 (COL26),verify the LED.
T5/Step 12: Connect P2 to the socket IC6/PIN2 (COL25),verify the LED.

T5/Step 13: Connect P2 to the socket IC5/PIN9 (COL24),verify the LED.
T5/Step 14: Connect P2 to the socket IC5/PIN6 (COL23),verify the LED.
T5/Step 15: Connect P2 to the socket IC5/PIN5 (COL22),verify the LED.
T5/Step 16: Connect P2 to the socket IC5/PIN1 (COL21),verify the LED.
T5/Step 17: Connect P2 to the socket IC5/PIN10 (COL20),verify the LED.
T5/Step 18: Connect P2 to the socket IC5/PIN7 (COL19),verify the LED.
T5/Step 19: Connect P2 to the socket IC5/PIN4 (COL18),verify the LED.
T5/Step 20: Connect P2 to the socket IC5/PIN2 (COL17),verify the LED.

T5/Step 21: Connect P2 to the socket IC4/PIN9 (COL16),verify the LED.
T5/Step 22: Connect P2 to the socket IC4/PIN6 (COL15),verify the LED.
T5/Step 23: Connect P2 to the socket IC4/PIN5 (COL14),verify the LED.
T5/Step 24: Connect P2 to the socket IC4/PIN1 (COL13),verify the LED.
T5/Step 25: Connect P2 to the socket IC4/PIN10 (COL12),verify the LED.
T5/Step 26: Connect P2 to the socket IC4/PIN7 (COL11),verify the LED.
T5/Step 27: Connect P2 to the socket IC4/PIN4 (COL10),verify the LED.
T5/Step 28: Connect P2 to the socket IC4/PIN2 (COL9),verify the LED.

T5/Step 29: Connect P2 to the socket IC3/PIN9 (COL8),verify the LED.
T5/Step 30: Connect P2 to the socket IC3/PIN6 (COL7),verify the LED.
T5/Step 31: Connect P2 to the socket IC3/PIN5 (COL6),verify the LED.
T5/Step 32: Connect P2 to the socket IC3/PIN1 (COL5),verify the LED.
T5/Step 33: Connect P2 to the socket IC3/PIN10 (COL4),verify the LED.
T5/Step 34: Connect P2 to the socket IC3/PIN7 (COL3),verify the LED.
T5/Step 35: Connect P2 to the socket IC3/PIN4 (COL2),verify the LED.
T5/Step 36: Connect P2 to the socket IC3/PIN2 (COL1),verify the LED.

TEST 6

T6/Step 1:

All the ICs must be removed from the sockets, with the exception of
the 5V voltage regulator. The seven 18 ohm resistors must be replaced 
with 180 ohm resistors.

In TEST 6 will will test all the LEDs driven by ROW5.

Connect P1 to the socket IC1/PIN6 (ROW5).

T6/Step  2: Connect P2 to the socket IC7/PIN7 (COL35),verify the LED.
T6/Step  3: Connect P2 to the socket IC7/PIN4 (COL34),verify the LED.
T6/Step  4: Connect P2 to the socket IC7/PIN2 (COL33),verify the LED.

T6/Step  5: Connect P2 to the socket IC6/PIN9 (COL32),verify the LED.
T6/Step  6: Connect P2 to the socket IC6/PIN6 (COL31),verify the LED.
T6/Step  7: Connect P2 to the socket IC6/PIN5 (COL30),verify the LED.
T6/Step  8: Connect P2 to the socket IC6/PIN1 (COL29),verify the LED.
T6/Step  9: Connect P2 to the socket IC6/PIN10 (COL28),verify the LED.
T6/Step 10: Connect P2 to the socket IC6/PIN7 (COL27),verify the LED.
T6/Step 11: Connect P2 to the socket IC6/PIN4 (COL26),verify the LED.
T6/Step 12: Connect P2 to the socket IC6/PIN2 (COL25),verify the LED.

T6/Step 13: Connect P2 to the socket IC5/PIN9 (COL24),verify the LED.
T6/Step 14: Connect P2 to the socket IC5/PIN6 (COL23),verify the LED.
T6/Step 15: Connect P2 to the socket IC5/PIN5 (COL22),verify the LED.
T6/Step 16: Connect P2 to the socket IC5/PIN1 (COL21),verify the LED.
T6/Step 17: Connect P2 to the socket IC5/PIN10 (COL20),verify the LED.
T6/Step 18: Connect P2 to the socket IC5/PIN7 (COL19),verify the LED.
T6/Step 19: Connect P2 to the socket IC5/PIN4 (COL18),verify the LED.
T6/Step 20: Connect P2 to the socket IC5/PIN2 (COL17),verify the LED.

T6/Step 21: Connect P2 to the socket IC4/PIN9 (COL16),verify the LED.
T6/Step 22: Connect P2 to the socket IC4/PIN6 (COL15),verify the LED.
T6/Step 23: Connect P2 to the socket IC4/PIN5 (COL14),verify the LED.
T6/Step 24: Connect P2 to the socket IC4/PIN1 (COL13),verify the LED.
T6/Step 25: Connect P2 to the socket IC4/PIN10 (COL12),verify the LED.
T6/Step 26: Connect P2 to the socket IC4/PIN7 (COL11),verify the LED.
T6/Step 27: Connect P2 to the socket IC4/PIN4 (COL10),verify the LED.
T6/Step 28: Connect P2 to the socket IC4/PIN2 (COL9),verify the LED.

T6/Step 29: Connect P2 to the socket IC3/PIN9 (COL8),verify the LED.
T6/Step 30: Connect P2 to the socket IC3/PIN6 (COL7),verify the LED.
T6/Step 31: Connect P2 to the socket IC3/PIN5 (COL6),verify the LED.
T6/Step 32: Connect P2 to the socket IC3/PIN1 (COL5),verify the LED.
T6/Step 33: Connect P2 to the socket IC3/PIN10 (COL4),verify the LED.
T6/Step 34: Connect P2 to the socket IC3/PIN7 (COL3),verify the LED.
T6/Step 35: Connect P2 to the socket IC3/PIN4 (COL2),verify the LED.
T6/Step 36: Connect P2 to the socket IC3/PIN2 (COL1),verify the LED.

[Luciano]

This is the last post about the LEds test.

TEST 7

T7/Step 1:

All the ICs must be removed from the sockets, with the exception of
the 5V voltage regulator. The seven 18 ohm resistors must be replaced 
with 180 ohm resistors.

In TEST 7 will will test all the LEDs driven by ROW6.

Connect P1 to the socket IC1/PIN8 (ROW6).

T7/Step2: Connect P2 to the socket IC7/PIN7 (COL35),verify the LED.
T7/Step3: Connect P2 to the socket IC7/PIN4 (COL34),verify the LED.
T7/Step4: Connect P2 to the socket IC7/PIN2 (COL33),verify the LED.

T7/Step 5: Connect P2 to the socket IC6/PIN9 (COL32),verify the LED.
T7/Step 6: Connect P2 to the socket IC6/PIN6 (COL31),verify the LED.
T7/Step 7: Connect P2 to the socket IC6/PIN5 (COL30),verify the LED.
T7/Step 8: Connect P2 to the socket IC6/PIN1 (COL29),verify the LED.
T7/Step 9: Connect P2 to the socket IC6/PIN10 (COL28),verify the LED.
T7/Step 10: Connect P2 to the socket IC6/PIN7 (COL27),verify the LED.
T7/Step 11: Connect P2 to the socket IC6/PIN4 (COL26),verify the LED.
T7/Step 12: Connect P2 to the socket IC6/PIN2 (COL25),verify the LED.

T7/Step 13: Connect P2 to the socket IC5/PIN9 (COL24),verify the LED.
T7/Step 14: Connect P2 to the socket IC5/PIN6 (COL23),verify the LED.
T7/Step 15: Connect P2 to the socket IC5/PIN5 (COL22),verify the LED.
T7/Step 16: Connect P2 to the socket IC5/PIN1 (COL21),verify the LED.
T7/Step 17: Connect P2 to the socket IC5/PIN10 (COL20),verify the LED.
T7/Step 18: Connect P2 to the socket IC5/PIN7 (COL19),verify the LED.
T7/Step 19: Connect P2 to the socket IC5/PIN4 (COL18),verify the LED.
T7/Step 20: Connect P2 to the socket IC5/PIN2 (COL17),verify the LED.

T7/Step 21: Connect P2 to the socket IC4/PIN9 (COL16),verify the LED.
T7/Step 22: Connect P2 to the socket IC4/PIN6 (COL15),verify the LED.
T7/Step 23: Connect P2 to the socket IC4/PIN5 (COL14),verify the LED.
T7/Step 24: Connect P2 to the socket IC4/PIN1 (COL13),verify the LED.
T7/Step 25: Connect P2 to the socket IC4/PIN10 (COL12),verify the LED.
T7/Step 26: Connect P2 to the socket IC4/PIN7 (COL11),verify the LED.
T7/Step 27: Connect P2 to the socket IC4/PIN4 (COL10),verify the LED.
T7/Step 28: Connect P2 to the socket IC4/PIN2 (COL9),verify the LED.

T7/Step 29: Connect P2 to the socket IC3/PIN9 (COL8),verify the LED.
T7/Step 30: Connect P2 to the socket IC3/PIN6 (COL7),verify the LED.
T7/Step 31: Connect P2 to the socket IC3/PIN5 (COL6),verify the LED.
T7/Step 32: Connect P2 to the socket IC3/PIN1 (COL5),verify the LED.
T7/Step 33: Connect P2 to the socket IC3/PIN10 (COL4),verify the LED.
T7/Step 34: Connect P2 to the socket IC3/PIN7 (COL3),verify the LED.
T7/Step 35: Connect P2 to the socket IC3/PIN4 (COL2),verify the LED.
T7/Step 36: Connect P2 to the socket IC3/PIN2 (COL1),verify the LED.

TEST 8

T8/Step 1:

All the ICs must be removed from the sockets, with the exception of
the 5V voltage regulator. The seven 18 ohm resistors must be replaced 
with 180 ohm resistors.

In TEST 8 will will test all the LEDs driven by ROW7.

Connect P1 to the socket IC1/PIN7 (ROW7).

T8/Step2: Connect P2 to the socket IC7/PIN7 (COL35),verify the LED.
T8/Step3: Connect P2 to the socket IC7/PIN4 (COL34),verify the LED.
T8/Step4: Connect P2 to the socket IC7/PIN2 (COL33),verify the LED.

T8/Step 5: Connect P2 to the socket IC6/PIN9 (COL32),verify the LED.
T8/Step 6: Connect P2 to the socket IC6/PIN6 (COL31),verify the LED.
T8/Step 7: Connect P2 to the socket IC6/PIN5 (COL30),verify the LED.
T8/Step 8: Connect P2 to the socket IC6/PIN1 (COL29),verify the LED.
T8/Step 9: Connect P2 to the socket IC6/PIN10 (COL28),verify the LED.
T8/Step 10: Connect P2 to the socket IC6/PIN7 (COL27),verify the LED.
T8/Step 11: Connect P2 to the socket IC6/PIN4 (COL26),verify the LED.
T8/Step 12: Connect P2 to the socket IC6/PIN2 (COL25),verify the LED.

T8/Step 13: Connect P2 to the socket IC5/PIN9 (COL24),verify the LED.
T8/Step 14: Connect P2 to the socket IC5/PIN6 (COL23),verify the LED.
T8/Step 15: Connect P2 to the socket IC5/PIN5 (COL22),verify the LED.
T8/Step 16: Connect P2 to the socket IC5/PIN1 (COL21),verify the LED.
T8/Step 17: Connect P2 to the socket IC5/PIN10 (COL20),verify the LED.
T8/Step 18: Connect P2 to the socket IC5/PIN7 (COL19),verify the LED.
T8/Step 19: Connect P2 to the socket IC5/PIN4 (COL18),verify the LED.
T8/Step 20: Connect P2 to the socket IC5/PIN2 (COL17),verify the LED.

T8/Step 21: Connect P2 to the socket IC4/PIN9 (COL16),verify the LED.
T8/Step 22: Connect P2 to the socket IC4/PIN6 (COL15),verify the LED.
T8/Step 23: Connect P2 to the socket IC4/PIN5 (COL14),verify the LED.
T8/Step 24: Connect P2 to the socket IC4/PIN1 (COL13),verify the LED.
T8/Step 25: Connect P2 to the socket IC4/PIN10 (COL12),verify the LED.
T8/Step 26: Connect P2 to the socket IC4/PIN7 (COL11),verify the LED.
T8/Step 27: Connect P2 to the socket IC4/PIN4 (COL10),verify the LED.
T8/Step 28: Connect P2 to the socket IC4/PIN2 (COL9),verify the LED.

T8/Step 29: Connect P2 to the socket IC3/PIN9 (COL8),verify the LED.
T8/Step 30: Connect P2 to the socket IC3/PIN6 (COL7),verify the LED.
T8/Step 31: Connect P2 to the socket IC3/PIN5 (COL6),verify the LED.
T8/Step 32: Connect P2 to the socket IC3/PIN1 (COL5),verify the LED.
T8/Step 33: Connect P2 to the socket IC3/PIN10 (COL4),verify the LED.
T8/Step 34: Connect P2 to the socket IC3/PIN7 (COL3),verify the LED.
T8/Step 35: Connect P2 to the socket IC3/PIN4 (COL2),verify the LED.
T8/Step 36: Connect P2 to the socket IC3/PIN2 (COL1),verify the LED.

Once you have tested the 245 LEDs, post the results.

Best regards,

Luciano

[Pic_User]

Have you noticed that the “one project”, posters.
Whether or not they are students like eng444, AlaskanEE or Magu, or the multiple personalities building a DMX512.
Want specifically their project. Not general answers, not how to proceed, but precisely what is exactly wrong with this single project.

As Skimask has said (many times):

You would think:
Anyone who has sat in classes hour upon hour, day after day, year upon year. A student that has spent hours learning in labs. A student that has spent night after night studying for exams, passing those exams. Learning “state of the art” for years.
Paying many years of income, to professional instructors, that are not only specialists in the industry, but at a pinnacle of expertise to profess knowledge exactly on the subject.

A student, that will be stepping out of the door into a world of professionals. Ready in every way to become a highly paid professional.

You would think:
Those students, doing their final project, would know how to conceive, design, build and “trouble shoot” a simple project.

However:
There are a certain few, that have sat in class rooms for years. Spoon fed everything they need for the exams. Told what chapter, what material will be on the exam, so they could study from this paragraph to that paragraph. Led by the hand to lab. Told where to place the test leads, how much to turn the controls, what the instrument’s indications meant. Mostly their questions were, “is this going to be on the exam?” or “can I copy your home work?” or “what did you get for number 4”.

When they get to the forum, they expect specific instructions, precisely when they want / need it. They expect a “lesson plan”. When they sense a “dragging of the feet”, they get belligerent, rude, and demand that the “instructors” give them the information. The forum seems filled with the worst instructors they have ever paid for.

I don’t know how they could do all the school work, without a love of learning, a love of technology. They have my admiration for their tenacity. That is a huge pile of work that they “toughed out” and “plowed through”, so they can work in a field they don’t care about.

To use a project directly, “as is”, without significant improvement, modifications, is the height of dishonesty. Without proper credit given to the “seed idea” fully revealed, and disclosed is stealing. Intellectual property is property. Any student that would do such a thing, didn’t learn in the “professional ethics” class either.

These projects are so far over the ability of the this type student, they do not have the ability to know how any part of it works. This makes it impossible to figure out what is wrong. The same is true of their conduct in the forum, and in life. I feel sorry for the company that makes the mistake of hiring them.

Shame
-Adam-

[keithdoxey]

Led by the hand to lab. Told where to place the test leads, how much to turn the controls, what the instrument’s indications meant.

Perhaps this is an attempt to avoid being sued under Health and Safety legislation. They tell them exactly where to place the leads so they dont blow themselves up.

Some of us had to learn that the hard way but we survived

[magu]

ok. i`ve check it. i have dificulties with 6 led, but i resolve the problem. It`s work excelent. Next step?

[Luciano]

Hi Magu,

For the next test you will need a signal generator.
(5V square wave of about 1.5 Hz).

If you don't have a signal generator, build this circuit:

(Click to enlarge the picture).

Let me know when you have the square wave signal ready.

Best regards,

Luciano

[magu]

Hi Magu,

For the next test you will need a signal generator.
(5V square wave of about 1.5 Hz).

If you don't have a signal generator, build this circuit:

(Click to enlarge the picture).

Let me know when you have the square wave signal ready.

Best regards,

Luciano

ok Luciano, i build the circuit. The led Blinks. NEXT? (What do i have to test with this circuit?)

[Luciano]

Hi Magu,

In my opinion in the schematic posted by Trent there is a mistake.
(Controller Schematic.pdf attached to the first post of this thread).
See my comments in the picture below.


(Click to enlarge the picture).

* * *

In this test we are going to use your new pulse generator.
Make sure you are still using the seven 180 ohm resistors for this test.

Plug into their sockets these chips:

IC3 (CD4017)
IC4 (CD4017)
IC5 (CD4017)
IC6 (CD4017)
IC9 (74HC08)


These chips are not present during this test:

IC1 (The PIC)
IC7 (The last CD4017)
IC8 (The EEPROM)

**********************

TEST

Step 1: Connect our wire "P1" to the socket IC1 PIN 1. (ROW1)
Step 2: Permanently connect to GND via a 1k series resistor PIN 3 of the socket IC7.
Step 3: Connect the 1.5 Hz clock from the 555 to to the socket IC1 PIN 12 via a 1k series resistor.
Step 4: Power-on the circuit.
Step 5: Briefly connect our wire "P2" to the socket IC1 PIN 11. This will reset the CD4017 chips.
Now you should see ONE LED moving across the display ONCE.

Step 6: Power down the circuit.

Do the same test for ROW2, ROW3, ROW4, ROW5, ROW6 and ROW7. (Move our wire "P1").

* * *

Now power down the circuit and plug into the socket the IC7. (CD4017).
Remove from socket IC7 PIN 3 the 1k resistor to GND. (The above step 2).
Repeat the test again. What do you see?

Best regards,

Luciano

[magu]

nothing happens. i don`t see anything. when the ic7 is unpluged and the pin3 is connected to the ground LED moving across the display ONCE except the last 3 leds that are connected to the ic7. But when the ic7 in pluged nothing appears even when i thouch the p2 to ic1 pin11

[keithdoxey]

ok. i`ve check it. i have dificulties with 6 led, but i resolve the problem. It`s work excelent. Next step?

Get the other 239 LEDs to work LOL