Is there any problem with this ckt????
When the 1st led is on , the 3rd led is also on with low brightness why is that????????
pls help
What is connected on the left? Are the diodes all LEDs? What is the gate device? How is it powered?
yes the diodes are LEDs. The AND gate is 7408 which is powered from the 5v from arduino board
The output LED needs a series resistor.. Maybe 4700 ohms or more..
BUT TTL gates do not SOURCE very much current/
And what is connected on the left side? nothing?
the left side pins are connected to arduino output pins
Oh.
The leftside LEDs also need series resistors.. 220 to 1000 ohms or so.
I guess you expect the output LED to light when both Arduino outputs are High??
ya i need it to glow when only 11 comes at output