funkyguy4000:
You sorta need SIN for the tlc5940, otherwise it will have no idea what to do
I know about that, i'ts connected but not buffered
Grumpy_Mike:
I used something like that:
Like is not good enough.
That is just a PCB footprint it is not telling anything about how you wired it up.
Anyway it looks totally wrong from what little I can glean from it.When using a MM74HC04M you need the signal to pass through two buffers to get the signal the right way up.
I used exactly that PCB and 2x SMD MM74HC04M
Gate no. 1 is connected to gate no. 6, gate no. 2 to gate no. 5 and gate no. 3 to gate no. 4, in other words it's connected exactly as You say or am i missing something?
Unfortunately i don't have oscilloscope so I don't know if signal outgoing from buffer is correct or not.