K8055 and reading an rpm signal?

Thanks again for the advice

Regards

“I think the LM35 is a good choice. The output voltage is 1.5V at 150°C.
To get the best resolution you have to increase the K8055 input amplifier gain to 3. Then you get nearly full scale voltage, 4.5V at 150°C.”

how do you set the input amplification to 3 ?

regards

On page 10 of the manual there are instructions how to change the gain.

If you want a different gain factor you can calculate it quite easily using the following formula :
Gain A1 = 1 + (R10/R8) Gain A2 = 1 + (R11/R9)

R10 = 10k and R11 = 10k are on board.

To get gain 3 you have to install R8 = 5k and R9 = 5k.

(Nearest value in the E24 series is 5k1.)

no problems

i thought it may be possible to do it in the software

Do velleman sell a module i can program so it can carry out its own subroutines when instructed to by the pc?

There is no such module currently within the product line.