Sound Up! (an Audio Responsive Circuit)

In this project, you will create an audio-responsive security device composed of two main sections: a latching circuit and a light response system. The latching circuit will utilise a microphone or sound sensor to detect audio input, triggering a system that maintains its state until manually reset, this system will activate a light source, such as an LED or lamp, as a visual alert when the audio signal is detected. You will be assembling the two sections of the circuit together in order to create the final product using transistors, lights, breadboards, and various electrical components.

Materials Needed:

1. two 9mm LED lights
2. a 9v battery, or generator
3. one variable resistor
4. one Transistor
5. three resistors (two 1k resistors, and one 470)
6. one thyristor
7. copper wires
8. breadboard prototyping wires
9. a bread board
10. a matrix board
11. simple metal cutting tool (for example: pliers)
12. soldering equipment
13. access to a 3D printer
14. finally, a 3D printing software of choice

Gather your electrical components (transistor, wires, resistors, etc...) to a clear table. Make sure to bring a breadboard with you in order to configure the circuit. The bread board prototyping process will assist you in practicing the creation of the circuit in a layout you prefer. This is essential to avoid short circuits (can damage components), as well as errors throughout the creation process, as mistakes can effect the rest of the project negatively causing unnecessary halts.

1) if you do not understand how breadboards work, click this link "Here" to assist you in learning

2) collect your breadboard

3) using the reference image shown in this step, follow the blueprint/schematic and assemble all the components in their allocated sections

4) make sure to constantly test if your product is in working condition, by turning on the battery/generator before you solder it together

Soldering is one of the most crucial elements of circuit creation. With this being said, it is important to precisely follow every procedure listed below, remember not to touch or make contact with the bottom of the matrix board (the section with all the lines: contains a layout similar to a breadboard) otherwise the circuit will not work due to the acid in fingers oxidising the copper from the matrix board.

If you never soldered before, click this link: "Here" It well re-direct you to a step by step guide i have created to assist you in learning the basics of soldering.

1. collect your breadboard and place it near soldering equipment (this is for connivence while working). If you don't have a soldering set up, make sure to prepare one in a safe an organised area to prevent accidents related to heat.
2. Assuming you have soldering knowledge, collect your breadboard, as well as matrix board and line them up together near your soldering station
3. begin to transfer all the components from your breadboard to your matrix board one by one (remember to bend the components legs/base to prevent them from slipping outside from the board. For example the legs of an LED lamp)
4. using pliers or a cutting tool, remove the legs/base sections that are too long to prevent them from tangling together or causing a short circuit if they make contact with each other
5. After adding all your components begin to solder them to their stationary positions first
6. finally, start adding solder to the positive and negative sides to simulate/replicate the connection in the breadboard
7. when you are finished, switch off the soldering tool in order to stop heating up.

After finishing the the soldering process, and getting the main circuitry ready, it is important to design a case or box that contains the circuit as well as protecting it from any damage and casualties. The box will consist of two holes for the wires (in order to power the circuit), as well as a lid to contain the circuit.

1. first grab a ruler and begin to measure the edges of the circuit board. once this is complete open a CAD (computer aided design) software to assist you in the creation of the case (preferably shaper 3D).
2. make sure to begin to begin to enter the length and width of the circuit board in sketch mode (make sure to enter 0.5 more cm into the parameters to allow the design to fit perfectly)
3. after preparing the size, finalise the sketch and extrude the sides of the box upwards to create walls
4. make sure to slightly extrude the base upwards as well, preventing it from being too thin
5. when you are finished add to small holes with a radius of 0.5, make the wholes on the width of the box, and keep them 1 cm apart from each-other
6. now design a cap/lid, which should be 0.5 cm larger then the regular box. This can be done by placing 2 rectangles inside of each other, one being the same size as the box, and the other, being 0.5cm larger.
7. extrude the lid slightly upwards, and the ceiling of the lid slightly as well.

after finalising your design, upload it to a 3D printer of your choice.

The final step is to finish 3D printing your case, as well as preparing to assemble everything together (the case and the matrix board). After clicking the print button, your selected 3d printer will start creating your product out of plastic filament (make sure you have some loaded in the printer, otherwise it wont work correctly).

1) Collect your case as well as finished matrix board

2) scrape off poorly printed sections of your case with a chosen tool of choice (preferably a sanding paper)

3) assemble your product together by placing the board inside the box

4) make sure to push the power wires through the holes

5) when your done place the lid on top of the box

Finished:

1. Now you can plug in the wires to a battery or generator (make sure the positive wire is connected to the positive section of the battery or generator, visa versa with the negative side) and observe the finished product
2. Thank you for viewing this Intractable!