I found online two multimeters in very good price that can measure frequency too... i got attracted enough, because i don't have oscilloscope. The problem is that the first one was a simple multimeter capable of measuring frequency up to 10MHz and the other it had almost everything!
auto-ranging and capacitance meter up to 200uF however the frequency meter was hardly 100KHz...
So because i don't own a good multimeter and i can't afford buying a very good and expensive, i should buy this here...
https://www.uni-trend.com/UT10A.html
and i'll try to build a simple frequency meter however with bigger bandwidth around 100MHz or less. When I say simple I mean if it is possible to use components that i already own (like a LCD from an old multimeter..maybe a schmitt trigger 74HC14N) then it would be great! also i'm interested to find something without microcontroler! is that possible?
i find it important the design to have a PCB layout... also i want an opinion for the above multimeter, it would interesting in case it can measure AC voltage in higher frequency than the very simple digital ones...
thank you!