Free project PDK

[Nicolas]

Originally Posted by saber

hi Nicolas



i use bc557 substitute for bc556 transistor and i use a buzzer

is it made problem?

No not cause neither problem it's good and work

http://html.alldatasheet.com/html-pd...6/1/BC556.html

Originally Posted by saber

hi Nicolas


when i turn rv1 the red led is lighting (is this true? how can i calibration?)

in your schematic you write %17 for RV1, is it for calibration?

Yes that is true my dear is for chek voltage to your battery

use sample: Led light on if you have 9 V Good
led off if you have 6.5 V Low

This need calibration with VR1 to find the exactly Value

the led Green is for target the RV2 is for Gain ans sensitivity