Hi!
It's probably quite trivial for thoose who do electronics everyday but I've serached everywhere without finding a qlear solution to this question :
I have a number of 3 leg bicolor LED's (common cathode) to indicate the status of a pool system.
I want to be able to run the system both manually and from a micro using ON-OFF-ON switche's (2x3 pole's). When in 'auto' mode a low on pin from micro drives a relay via ULN2008 and I want both red and green LED on (yellow) to indicate system in auto mode. Toggle a switch to off state should set relay off and indicate red LED on .When the switch are in the other on position it should indicate manual mode driving the relay, green LED on. Does anyone have a schematic for this or could give me a hint how to.
Any help appreciated
Regards Hucke
It's probably quite trivial for thoose who do electronics everyday but I've serached everywhere without finding a qlear solution to this question :
I have a number of 3 leg bicolor LED's (common cathode) to indicate the status of a pool system.
I want to be able to run the system both manually and from a micro using ON-OFF-ON switche's (2x3 pole's). When in 'auto' mode a low on pin from micro drives a relay via ULN2008 and I want both red and green LED on (yellow) to indicate system in auto mode. Toggle a switch to off state should set relay off and indicate red LED on .When the switch are in the other on position it should indicate manual mode driving the relay, green LED on. Does anyone have a schematic for this or could give me a hint how to.
Any help appreciated
Regards Hucke