74HC595 problem
Peto
Posts: 11
Hi all,
i got problem with my serial to parallel shift register 595,
while i've been testing it with separated LEDs (not 7segmentLED) on proto board everything was
working, but when i moved and soldered it, there started be a problem.
circuit is just driver for 7segment display and it can be
extended ... i did it for 3 segments
the problem is 595 works and sometimes not,
when not i have to touch 595 case with finger sometimes to get an output
for LCD segments, and sometimes it works itself ... i'm not satisfied
with this performance , if someone could have any idea how to fix it
please let me know...
A.
Post Edited (Peto) : 8/6/2007 7:21:19 PM GMT
i got problem with my serial to parallel shift register 595,
while i've been testing it with separated LEDs (not 7segmentLED) on proto board everything was
working, but when i moved and soldered it, there started be a problem.
circuit is just driver for 7segment display and it can be
extended ... i did it for 3 segments
the problem is 595 works and sometimes not,
when not i have to touch 595 case with finger sometimes to get an output
for LCD segments, and sometimes it works itself ... i'm not satisfied
with this performance , if someone could have any idea how to fix it
please let me know...
A.
Post Edited (Peto) : 8/6/2007 7:21:19 PM GMT
479 x 365 - 8K
Comments
▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
Paul Baker
Propeller Applications Engineer
Parallax, Inc.