Here is the first schematic that I created : .
The Vcc is at 5.1V and I a self made using the LM317, Works Fine.
When I checked the Output with the Multi-meter I use., I was getting a high state of around 3.9V(Which I guess was fair enough.), but the Low was was giving an out of 2.5 ~ 2.6V, which to me seems a concern because the NE555 datasheet shows low state going to 0V in one of the .
I even tried simulating the circuit afterwards and this is what it looks like in simulation and even in the hardware set up :
.
And what am I supposed to make out of this?
So now I am getting a High state of 3.6V(seems fine), but the low state is still around 2.6V.
How do I find out the root of the Issue and how should I debug it?
Best Answer
With that particular circuit yes the output should go close to ground.
If it is not, either
Using a scope would help a lot.
You could try lifting the output pin and see if it still does it and measure what the voltage is at the top of the LED to eliminate item 2.