modified 10 years ago

IDK help pls

01:04:34

Help me piger it out

published 11 years ago

lenzrulz

11 years ago

You need to connect the 7 segment display to a power source.

tchkalov

11 years ago

You need to apply 5 V voltage to any of indicator ports to light on the corresponding segment. See: a 150 Ohm resistance is connected in series to diode inside the indicator. 2 V is the nominal voltage not at the port but at the internal node which is the diode cathode. To have 2 V there you need to apply 2 V + 150 Ohm * 20 mA = 5 V to the external port. This way 5 V logic high signals can be applied directly to the indicator. Sorry for misunderstanding!

hicamojones

11 years ago

Your resistor values are to high with a 4v source

tiggerroo

11 years ago

The resistors are to high

tchkalov

11 years ago

Consider my todays "7-segment Indicator" example to see what is inside the indicator :-)

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