I have a Mini DSO DS203 portable oscilloscope. It can generate sine, triangle, and square waveforms with a peak to peak voltage difference of 2.8V. Desired frequency range is 0-200Hz. Duty cycle is not important.
I wish to boost the square wave output of this function generator to a voltage level that can be interpreted by an Arduino as a HIGH on a digital input pin. Can I use a simple JFET op amp to boost the signal?
I also have access to a reference 5V signal on my breadboard. Is it instead possible to use an NPN transistor to switch the 5V signal using the 2.8V input signal?
What is the best route?