Hi, this is Wayne again with a topic “Weekend Project: Sample Weird Sounds from Electromagnetic Fields”.
There’S a secret world of electromagnetic fields, all around us screaming at us at all times that we can’t hear until today, in this weekend, project by jonas brusca we’re going to be soldering together what he calls an electro sloosh, it’s a device that lets you listen in On the secret sounds of electronics all around you. This is a relatively simple build and if you’ve worked on electronics projects before you’ll, probably have half the components in your leftovers drawers. You also need a pair of inductors, a 3.5 millimeter audio jack and an op amp. You can easily get these from any online electronic supplier start by soldering. The inductors to the top row of the perf board make sure that there’s some distance between them. These are essentially our microphones and you’ll, get a better stereo effect. If you give them some room. Next add the 2.2 microfarad capacitors to the inductors. These are going to determine the base.
Cutoff frequency then bridge the contacts between the inductors, as shown add the 1 kiloohm and 390 kiloohm resistors to the circuit. As shown in this configuration, they function as an inverting. Amplifier. Note that the 390 kilo ohm resistors are placed in the standing up position now solder, the socket for the op amp.
You can solder the ic directly, but using the socket lets you experiment with other amplifier circuits plus it also protects the somewhat delicate amp from the heat of the soldering iron. Make solder bridges between the socket and the resistors. Like you see here, add the second pair of 2.2 microfarad capacitors. These work with the first pair to define the base sound, then add the 100 microfarad capacitors.
These work as part of the virtual ground circuit. After that add the 100 kiloohm resistors, which act as a voltage divider finally add the headphone, jack and wire. The connectors to the second pair of capacitors you’ll also need to add this short jumper from the ic to the last pair of capacitors. Also, if you haven’t already place the op amp into the ic, socket there’s a few other op amps that work with this circuit so feel free to experiment. Until you find a sound, you really like with the circuit done, connect the battery leads, as shown to the virtual ground circuit and then attach your battery any way you like you can use a bit of hot glue, some double sided tape or a zip tie connect The battery plug in your headphones and start exploring or plug in an audio recorder and start sampling, the world of electromagnetic fields for someone who’s into weird sounds and unusual tools. I really like this project. I think it’s a lot of fun and there’s a great payoff and i guarantee you you’re, going to be the only one on your block with an electro sloosh, all right for the full write-up head over to makezine.com, and you can get all the project details there. You .