jonnybgood
Full Member level 4
I designed a chain of comparators that switch on LED's according to temperature with LM35. The output from the LM35 is amplified by a factor of 10. I managed to get quite close regarding the lighting of each LED with the correct temperature. I now need create a DOT display instead of a BAR display. I know that this is very easily implemented with an LM3914 but my job here is to design it myself. Any ideas or hints? The only thing I thought of is to activating and deactivating tri-state devices that controls the output or each previous comparator by the switching of the present comparator, thereby only leaving one LED lit corresponding to the present temperature. Is there any other method?