Hello, first time Arduino user, only started today so please bear with me
I'm following this tutorial Breadboard Layout | Arduino Lesson 4. Eight LEDs and a Shift Register | Adafruit Learning System and from what I can tell my circuit is lined up correctly. I've double-checked this, but am willing to accept I've made a mistake all the same... And yes I've checked my LEDs are the right way round!
I've copied and pasted the code directly so I assume that's ok, even so I've also checked that it looks sensible, and the pin numbers are as described
When I run the code it starts exactly as expected, but only 3 LEDs light up. The timing of each is correct, including that they all switch off at the count of 8
From this I surmise that
(1) the code is correct including timing
(2) at least some of the circuit is correct, because the first 3 work OK
(3) whatever the problem is, affects ALL 5 remaining pins
So my guess is that there is a fault at point 4 within the chip, that somehow blocks data being held at points 4:8
Is this a reasonable guess or might there be something else?
Thanks
