[HELP] 40 KHz Ultrasonic Signal Generator

[JEnny]

Anyone here have knowledge to help me in making of a 40KHz signal generator for my Ultrasonic sensor?? I'm very confused , I tried to make it with the electrical schematic from google.. and it doesnt work.. some one please help me [xx(]

 

[mkmukok]

Mmm, it is ultrasonic, so to detect(and adjust) the signal you need a osciloscope.Maiby it`s working but on different frequency.
Or your signal emiting divise( pieso) is not working.
What is it for this ultrasonic sensor- if for car alarm system-- just replace it!- cheaper...

Ultrasonic Signal Generator Module | Kemo Electronic | M048

 

[JEnny]

I made this for my project.. I'm testing an ultrasonic transmitter and ultrasonic receiver.. so I need to make a 40 KHz signal generator to generate some signal for my ultrasonic transducer to relase a signal