Week 6 & 7 FYP 2

For this week, im start to soldering the circuit. Constructing the circuit on the breadboard is not good. This is because when you design a circuit on a breadboard. There are possibility that the circuit will not functioning well. The reason are the breadboard are not sure is functioning well.

Second, the component on the breadboard become very sensitive. If you have an experience constructing on the breadboard, im sure enough that you may fell what im having. sometimes when you complete constructing and want to test. the result sometime functioning and sometimes not functioning. it may happen due to pull the cable or accidentally touch the circuit and it become open circuit. its good to test on breadboard. but i suggest that you construct directly on strip board.

 Picture 1: The making of Electronic Stethoscope

 Picture 1: The making of Electronic Stethoscope

Week 5 FYP 2

This week, im having problem with the sensor. The Piezoelectric sensor do receive the input but the input that the sensor detect is to small. When i placed the headphone as the output, the sound of heart which are `lup dup` where heard. But i have to use the amplifier from the speaker to amplify it. The sound produce were to low. It makes the output hard to be heard.

Week 4 FYP 2

For this week, i manage to construct the circuit on breadboard.

Picture 1 : The component used to build the circuit

Picture 1 : The component used to build the circuit

Unfortunately, the connection on the breadboard were unstable. If i touched anything on the circuit, the connection become on  and off.