Re: Feeler: full colour driver extension for the White Fusion kit
None of your schematics makes sense, sorry. :angel:
LOL !
I don't have your schematics, so i have to try to imagine how you hooked the PIC to the LM through the photocouplers, and there's only 2 ways for do this (well, only 2 ways for NORMAL users
) ..... and ofcourse, i drawed only one of the 3 lines, cause the other 2 are identical
Two diodes and a resistor are, practically, nothing other than OR gates, with the only advantage that are smaller than an IC and can be "dispersed" here and there, where you have space ..... and about the 2 schematics, are just for drive the optocoupler with the same positive TTL, regardless the fact that you used the output of the PIC in sink or source mode (source = led with negative common and PIC output ON when level "1" > scheme 1 ..... sink mode = led with positive common and PIC output ON when level "0" > scheme 2)
You may also modify it with a 4PDT switch, if you used source output, like this (so you don't need diodes, NOR gates, and also can not care about turn the PIC on or off
) :
Ofcourse also here i drawed just one of the 3 lines, the other 2 are identical ..... and you can always use the 4th line of the switch for drive a pair of leds, or a bicolor led, as visual status indication .....
(ok, next modification will be the mind reading ability, so the driver can anticipate the whishes of the owner, and turn itself its state ..... )