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'****************************************************************
'* Name : RPM.BAS *
'* Author : Christian Lerche *...

Hey All.

I've finally finished my tachometer, with full 4 7 segments displays. It updates very fast, with the calculation, and showing the new RPM's.
- Later I will post the full code, and...

Hey again guys. Long time, no code.

Finally, I got the idea.

- This rountine uses an external freq-to-voltage chip, and reads it using ADCIN, multiplies it, and show the result a lot of...

Hey Aratti.

I'm from Denmark, Europe.

Here we only use 8 digits. of course theres is the country-code +45, but normally, we don't use it, because our phones are programmed to in-country...

As it is, I am only using a simulator. I do not have a programmer.

Actually, it's supposed to measure the RPM of a computer-fan. 50% duty-cycle. :-)

- As Skimask says: I am making sure it is not starting from the middle of a period :D

I really think somethings wrong with the math. I just can't figure it out :/

Now an example:

MAIN:
W1 = W1 * 2 ' To get whole period
W1 = W1 * 4 ...

I'll go along and try to use the CCP on Pic16F628A :-)
I'll be back with updates.


Thanks for the fast replies!

Sorry for letting the problem out (I was kinda tired).

The attached image views the first digit of 4. As if the algorithm doesn't calculate the RPM correct.

1) - I have not yet build the...

I'm writing a routine to a tachometer. I just doesn't work! I've searched the forum, but i haven't found anything that looks like this.



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