User:Ueli

=DIY Chip=

You will need
1. battery

2. wired battery connection

3. insulatet wire

4. led light

5. speaker

6. ceramic capacitor

7. semiconductor

8. circuit board ( NaOH | FeCl3 )

---> tools: soldering iron | solder | wire cutter | tweezers

How to Create Printed Circuit Boards
Step1: To apply with this method, you will need a photosensitive (positive or negative) laminated PCB card, an UV insulator and a transparent sheet and distilled water. You may find the cards ready to use (they are covered with a black nylon sheet), or photosensitive spray to apply on the copper side of an ordinary blank PCB card. Take care to purchase also a photorevelator compatible with the photo spray or the PCB photosensitive coating. Step2: Draw the PCB layout on the transparent sheet, in positive or negative mode, according to the photosensitive coating of the card. (example see: wiring diagram ) Step3: Cover the copper side of the board with the printed transparent sheet

Step4: Place the board in the UV machine or sunlight. Turn on the UV machine. It will irradiate your board with the UV for the specified amount of time. Most of the UV insulators are equipped with an adjustable timer. (Don`t leave it for to long under the UV light.)

Step5: Once done, remove the board from the UV insulator. Clean the copper side. Then place it in its acid bath. The parts destroyed by the UV irradiation will be etched by the acid. Submerge the board in the acid. Make sure to stir every 3-5 minutes.Take the board out and wash it when all unnecessary copper is etched away from the board. Rise it with water. source: http://www.wikihow.com/Create-Printed-Circuit-Boards



wiring diagram


A simple wiring diagram to show the components of the circuit.

Soldering components into PCB
Sand the chip first. Then start with the IC semiconductor (CD4093BE). It is easier to solder when you bend the little "legs" and shorten them. Watch out for the notch - it shows you the first to be soldered pin.



Add the ceramic capacitor, wired battery connection, the led light and the speaker (Tipp: add a little solder at the ends of the insulated wire)