Hello,
I have successfully made a Volt meter using a 16F88 and a 16x2 LCD display. Now I am thinking about extending the capability to measuring currrent and possibly resistance.
The voltmeter was easy, you simply measure the voltage input to the PIC plus your equation for your attenuation. Very straight forward. But how would I measure resistance or amperage?
I feel like this is a dumb question, but my google searches came up with nothing.
Thanks!
BTW, in the end assuming I did a good job coding and used good high quality components, how accurate will my DMM be compared to say a Fluke...or compared to a 5 dollar one. What I am really asking is how good is the quality of the PIC ADC.
Also, for my voltmeter I need a 5V power source that will produce exactly 5V (ref voltage). My current one is around 5.07V (7805). Any suggestions?
I have successfully made a Volt meter using a 16F88 and a 16x2 LCD display. Now I am thinking about extending the capability to measuring currrent and possibly resistance.
The voltmeter was easy, you simply measure the voltage input to the PIC plus your equation for your attenuation. Very straight forward. But how would I measure resistance or amperage?
I feel like this is a dumb question, but my google searches came up with nothing.
Thanks!
BTW, in the end assuming I did a good job coding and used good high quality components, how accurate will my DMM be compared to say a Fluke...or compared to a 5 dollar one. What I am really asking is how good is the quality of the PIC ADC.
Also, for my voltmeter I need a 5V power source that will produce exactly 5V (ref voltage). My current one is around 5.07V (7805). Any suggestions?