**broken link removed**
what im trying to do is make a wall of rgb leds and have them change colour and pulse from side to side (top to bottom in the picture above)
so i made this circuit.
the plan is to have 3 decade counters each having a clock at different frequencies this would give the effect of changing colour
each output of the decade counter is connected to the two transistor with a capacitor and resistor this adds a fade to the led as it turns off
this is then connected to one segment of 7 rgb leds
the circuit only shows 2 rows of leds but the real one will have 7 leds by 7 leds
what i want to know is
---what decade counter to use the one i have used on this site Circuit Simulator Applet uses a decade counter with 10 outputs and the one in the diagram above has 7 but i think it converts it into 7 segment type display
the circuit import code is :
-- i also want to know the effeciency of the circuit especially the transistor bit of it
can you reduce the transistor section but still have 7 leds powered off it and have it still fade?
-- in the circuit simulation app it says as the leds turn on the current drawn is 14A but this is a spike would this work fine with a ac adapter whos output is 12V at 1.5A max
thanks
any other constructive advice is welcome
what im trying to do is make a wall of rgb leds and have them change colour and pulse from side to side (top to bottom in the picture above)
so i made this circuit.
the plan is to have 3 decade counters each having a clock at different frequencies this would give the effect of changing colour
each output of the decade counter is connected to the two transistor with a capacitor and resistor this adds a fade to the led as it turns off
this is then connected to one segment of 7 rgb leds
the circuit only shows 2 rows of leds but the real one will have 7 leds by 7 leds
what i want to know is
---what decade counter to use the one i have used on this site Circuit Simulator Applet uses a decade counter with 10 outputs and the one in the diagram above has 7 but i think it converts it into 7 segment type display
the circuit import code is :
-- i also want to know the effeciency of the circuit especially the transistor bit of it
can you reduce the transistor section but still have 7 leds powered off it and have it still fade?
-- in the circuit simulation app it says as the leds turn on the current drawn is 14A but this is a spike would this work fine with a ac adapter whos output is 12V at 1.5A max
thanks
any other constructive advice is welcome