http://www.circuitdiagramlinks.com/469-obstacle-detection-sensor-circuit/
I have made an ultrasonic sensor on a breadboard using the circuit diagram on the above website.
to improve my sensor i am connecting a comparator and 4 LED that will show the range as the LED will illuminate based on the object distance from the sensor. I am using LM339 as a comparator
NOTE: using a multimeter, i check that as i move my hand closer or far from the sensor, the voltage values changes. so, very close to the transducer, the voltage is in mV. but as i move my hand far, the voltage value starts increasing until 5 V. i connected the multimeter +ve between the LED and R6 and the -ve on the ground part.
For power supply i am using 6V battery.
the real problem is that how do I connect 4 LED to LM339 and then this stuff with the sensor.
http://www.facstaff.bucknell.edu/mastascu/elessonshtml/Miscellaneous/PinoutLM339.html
The above website is the schematic of LM339.
can anyone tell me what to put on V-in and V+in and also how to connect the IC in the sensor circuit????????
I dd some searching about the comparator and the LED and found these circuit but these circuit need to be changed.
http://www.vmi.edu/uploadedFiles/Faculty_Webs/ELEN/SquireJC/EE223/Lab-4-Comparators.pdf
http://www.eleccircuit.com/wp-content/uploads/2009/08/bargraph-voltage-indicator-by-lm339.jpg
I have made an ultrasonic sensor on a breadboard using the circuit diagram on the above website.
to improve my sensor i am connecting a comparator and 4 LED that will show the range as the LED will illuminate based on the object distance from the sensor. I am using LM339 as a comparator
NOTE: using a multimeter, i check that as i move my hand closer or far from the sensor, the voltage values changes. so, very close to the transducer, the voltage is in mV. but as i move my hand far, the voltage value starts increasing until 5 V. i connected the multimeter +ve between the LED and R6 and the -ve on the ground part.
For power supply i am using 6V battery.
the real problem is that how do I connect 4 LED to LM339 and then this stuff with the sensor.
http://www.facstaff.bucknell.edu/mastascu/elessonshtml/Miscellaneous/PinoutLM339.html
The above website is the schematic of LM339.
can anyone tell me what to put on V-in and V+in and also how to connect the IC in the sensor circuit????????
I dd some searching about the comparator and the LED and found these circuit but these circuit need to be changed.
http://www.vmi.edu/uploadedFiles/Faculty_Webs/ELEN/SquireJC/EE223/Lab-4-Comparators.pdf
http://www.eleccircuit.com/wp-content/uploads/2009/08/bargraph-voltage-indicator-by-lm339.jpg