Sound Card Oscilloscope - How To Make A PC Scope

If you have a PC then you can turn it into an oscilloscope with very little effort. Build this very simple sound card scope probe, download some free software and you can have a full featured 20kHz oscilloscope of your very own in next to no time. You can use this little project to help you understand what an oscilloscope is and how to use one. You can also use it to help you design, build and test your electronic gadgets. If you have any interest at all in building, designing or testing electronic circuits then you can&afford to not have one of these unless you already have access to a proper oscilloscope. Even if you do have professional test gear this sound card oscilloscope simulator can still come in useful. It&just handy to have around. Transcript: -------------- If you build, design or test anything electronic and you don&have an oscilloscope then I have a treat for you. You can see the sound card oscilloscope displaying two signals from an astable multivibrator circuit running at 1kHz. The waveforms are from the collector and base of one of the transistors. Start with a copperless perforated board about 60 millimeters by 50 millimeters. The circuit has two identical channels. There is an input resistor, a potentiometer and two protection diodes. Place the components including the wire posts that I show you how to make on the web site. I used some large trimmers from my junk box but you can use smaller ones like this or panel mounted potentiometers like...