williamchia
Newbie level 6
Hi all,
Sorry but i am still not sure what is it?
I am doing a circuit to flash 2 LEDs, and i use only one 9V battery. "+" of the battery is possitive and "-" is negative (obviously...), then what is gound? Does the "negative" means ground in this case?
The circuit is attached (taken from: **broken link removed**)
I use 7805 to control the output to be +5V.
Initially i connected pin 12 and 31 to negative, but the LEDs do not light up. When i disconnect them from the negative, the LEDs light up but do not flash (they should).
Where should i connect the pin12 and 31 to? Ground? But what is "gound"?
Thank you very much! Any comments or helps are appreciated!
Regards,
William
Sorry but i am still not sure what is it?
I am doing a circuit to flash 2 LEDs, and i use only one 9V battery. "+" of the battery is possitive and "-" is negative (obviously...), then what is gound? Does the "negative" means ground in this case?
The circuit is attached (taken from: **broken link removed**)
I use 7805 to control the output to be +5V.
Initially i connected pin 12 and 31 to negative, but the LEDs do not light up. When i disconnect them from the negative, the LEDs light up but do not flash (they should).
Where should i connect the pin12 and 31 to? Ground? But what is "gound"?
Thank you very much! Any comments or helps are appreciated!
Regards,
William