This page i made, explains the problem i have, in much detail :
https://www.deviantart.com/q12a/art/dBenzin100-ziud-18-circuit-3914-and-LDR-852390002
In the Right side, you see my custom LDR input to pin 5 of LM3914 IC.
It works, but with very limited range. I understand why is doing it like that, and is not my concern.
All I wish is to transform that black heap of sensibility into a more liniar (green) transition. Pretty much as the POT is doing in the Left side.
And I understand that Pot is in fact a voltage divider. But mine is not really, is a thing of a voltage divider, but not quite.
One solution I can think of, is using a PIC 16F84 MCU. But I left it to be as plan B, since I have to remember all that stuff and assemble everything and is a lot of trouble.
I wish it can be done from discrete components in a classic circuit mode.
I also know my custom "voltage divider" is not really one, but is the best thing i could think of. I have no other ideas.
How will you transform it's ass into a liniar output?
Thank you.
Oh.. my image, view it zoom in mode, its important. It have a lot of tiny details in it that only zoomed in are possible to be seen. When you look it from afar, its just too little. I suggest to download it and open with your image viewer, and zoom in it as much as you please and easy pan it.
Thank you !
https://www.deviantart.com/q12a/art/dBenzin100-ziud-18-circuit-3914-and-LDR-852390002
In the Right side, you see my custom LDR input to pin 5 of LM3914 IC.
It works, but with very limited range. I understand why is doing it like that, and is not my concern.
All I wish is to transform that black heap of sensibility into a more liniar (green) transition. Pretty much as the POT is doing in the Left side.
And I understand that Pot is in fact a voltage divider. But mine is not really, is a thing of a voltage divider, but not quite.
One solution I can think of, is using a PIC 16F84 MCU. But I left it to be as plan B, since I have to remember all that stuff and assemble everything and is a lot of trouble.
I wish it can be done from discrete components in a classic circuit mode.
I also know my custom "voltage divider" is not really one, but is the best thing i could think of. I have no other ideas.
How will you transform it's ass into a liniar output?
Thank you.
Oh.. my image, view it zoom in mode, its important. It have a lot of tiny details in it that only zoomed in are possible to be seen. When you look it from afar, its just too little. I suggest to download it and open with your image viewer, and zoom in it as much as you please and easy pan it.
Thank you !