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
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