bynes Posted January 6, 2007 Report Share Posted January 6, 2007 hi there! im a graduating student and we Quote Link to comment Share on other sites More sharing options...
AN920 Posted January 6, 2007 Report Share Posted January 6, 2007 Souns like a easy task for a PIC micro. Look on the microchip website for typical counting applications and code to drive the displays. You will also find a lot on Google. Quote Link to comment Share on other sites More sharing options...
audioguru Posted January 6, 2007 Report Share Posted January 6, 2007 Our Electronic Stethoscope-2 project fixes errors in the original project.The errors are in the schematic and in the parts list. Quote Link to comment Share on other sites More sharing options...
MP Posted January 7, 2007 Report Share Posted January 7, 2007 I doubt this graduating student is having a problem building the simple amplifier circuit for the stethoscope. As AN920 has mentioned, the tasks needed can easily be performed by a micro. Bynes needs to decide which one and which language, for further assistance.MP Quote Link to comment Share on other sites More sharing options...
bynes Posted January 13, 2007 Author Report Share Posted January 13, 2007 hi to all,i guess it wasn't that easy at all. building the amplifier circuit was not the main problem. we build it already and found out that the output sound was not that loud and clear. still there are some noise. the amplifier stage is the first out of three. we still need to connect it to ISD2560 to record and can playback the output sound. next to it is to display the counted heartrate sing LCD or 7segment. hope you have time answering my questions...thanks alot and Godbless... :) Quote Link to comment Share on other sites More sharing options...
audioguru Posted January 13, 2007 Report Share Posted January 13, 2007 the output sound was not that loud and clear. still there are some noise.Did you make the Electronic Stethoscope-2 circuit?Please describe the sound. Is it distorted? Goes it have hiss? Does it have background sounds? Does the microphone or its cable make loud crackling noises when they are moved? Did you use the TL072 low noise opamp?Did you use new 9V alkaline batteries? Quote Link to comment Share on other sites More sharing options...
login
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.