Dr_Doggy
Well-Known Member
i had another thread, but i cant find it, and lots of changes were made anyway but now i seem to be running in to problems,
It started when I used common cathode leds instead of anodes, so now what im doing is simply using uln2003's controlled by shift registers (25 outputs) to close the ground circuit
but at the source(5v) where i control my layers with three uln2003 's controlled by two 74hc238 mux.
but it didnt seem to work so i pulled the uln2003 and ran the layers direct with the mux, which worked better, but not enough current, espically due to the fact that i need to switch between the rgb so 1/3 but also between 5 layers, so its even worse @ 1/15 cycles, my plan is to pump it up a bit using a 497-3110-ND mosfet to switch each layer, after regulating it at 3 - 5 vlots, (and invert my mux output),..\
is this a good idea? is there a better way to control my sourcing?
It started when I used common cathode leds instead of anodes, so now what im doing is simply using uln2003's controlled by shift registers (25 outputs) to close the ground circuit
but at the source(5v) where i control my layers with three uln2003 's controlled by two 74hc238 mux.
but it didnt seem to work so i pulled the uln2003 and ran the layers direct with the mux, which worked better, but not enough current, espically due to the fact that i need to switch between the rgb so 1/3 but also between 5 layers, so its even worse @ 1/15 cycles, my plan is to pump it up a bit using a 497-3110-ND mosfet to switch each layer, after regulating it at 3 - 5 vlots, (and invert my mux output),..\
is this a good idea? is there a better way to control my sourcing?
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