What they are saying is if you intend to power the board with 5V applied to CN4 pin 4, don't try to draw more than 500mA into or off the board....
And what was the answer?
What did you learn from this episode?
Thanks. So we are repeating what has already been stated.
For 7400 series gates, use 220Ω pull-down resistor to guarantee that the input pin is...
aargh! Don't say that. You will confuse the hell out of newbies.
The datasheet is the place to go and get the required information. It will say...
As the man says, get an oscilloscope.
OK. You've written the code. It compiles and it is downloaded to the MCU.
Now comes the next step. Debug your code.
What is it supposed to do?...
Does your program compile without errors?
Your code is disjointed and missing parts.
Show the complete program as one file.
One thread per topic, please.
Ah! Didn't notice the U1.
Yes, I agree.
It is 0.1μF or 100nF.
That is more typical for AC line filter capacitors for RF suppression.
I don't see current limiting resistors on the LEDs.
You should never take logic signals from outputs that are used to drive LEDs.
I use IAR EWARM because that is what I started using.
ST bought Atollic.
0.65μF ±5% 1600V
0.65 is unusual and hence I could be wrong.
STMicroelectronics has two styles of development boards, Nucleo and Discovery....
A neon lamp can be used as high voltage indicator as well as a voltage regulator.