Okay..... Let me tell you in detail about my project, I am trying to design and develop Fetal monitoring device for monitoring the fetus during in the labor time. I would like to use the low-cost sensors and materials like FSR sensor for measuring uterine contraction and condenser Microphone for measuring the fetal heart rate during labor and currently I am trying to design the fetal heart rate measuring mechanism by using microphone sensor, amplifier, filter, Arduino and LCD display. could you help me as much as you can ... I need your support on designing the schematic diagram of fetal heart rate monitoring by using electret condonsor microphone ...I planned to use sense fetal heart rate by using Condenaor microphone sensor and since the signal we captured from mothers abdomen is too small, i need to use NE5532 Op-amp to amplifier the signal, use LM458 or LM741 to filter out unwanted signal...and finaly to use comparator to feed in to microcontroller(Arduino UNO) to quantify the BPM of the fetues....could you show me the numberand value of resistance and capacitor used for designing schematic diagram...for getting and easily measuring fetal heart rate. And also I would like to use FSR sensor for measuring uterine contartion strength, frequency and duration during in labor time.. Thanks a lot for giving your time... Best regards Mulusew
