Hello!!
I' ve build a digital clock with 4 7-seg digits wich are driven by a pic 16F84.
What i wanted to do was to replace each segment of the digits with led strips using the ULN2003A chip.But i have problems with the signals of the segments.
I read that i have to use some pull up or pull down resistors but i dont know how.
In the schematic i have removed the resistors R1-R7
Any help?
Thank you in advance!
I' ve build a digital clock with 4 7-seg digits wich are driven by a pic 16F84.
What i wanted to do was to replace each segment of the digits with led strips using the ULN2003A chip.But i have problems with the signals of the segments.
I read that i have to use some pull up or pull down resistors but i dont know how.
In the schematic i have removed the resistors R1-R7
Any help?
Thank you in advance!
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