I've tried searching for an answer on this topic but I must be phrasing it wrong because I can't find anything.
I have a voltage range of about a 1 volt. I want to pass it through an Op Amp (or something else) to convert it to a 0 V - 3.3 V signal to trip a digital interrupt pin. My friend told me about Rail to Rail op amps but I have a 741 I can use that I have in my kit right now.
Is there an easy way to use a 741 op amp to do this conversion? My VCC is 3V3 & my GND is 0 V and I would really like to avoid using a negative voltage in this circuit.
I know it must be possible because I have a light sensor breakout board that takes a 0 V - 3.3 V supply and outputs a digital 1 or 0. http://www.dx.com/p/photoactivity-diode-light-sensor-detection-sensor-module-152611#.Vbet_6GlvVM
Is there a better way to do this? It must feed an interrupt pin so please don't suggest sending it to an ADC.
Thanks in advance!