Current Part:
PICKit Programmer
1uF Ceramic Capacitor
0.47uF Tantalum Capacitor
Speaker
CR2032 Battery Holder
CR2032 Battery
Copper Clad PC Board
Ferric Chloride Etchant
LaserJet Printer
Glossy Paper
Solder
Soldering Iron
Clothing Iron Iron
Parts List Details
Luckily this project is more software based than hardware so there's not many components. The more important components are described in more detail below.
PIC 10F202 (SOT23 package)
This is the microcontroller that we're going to use to generate the bzzz or chirp noises through the speaker. It's a super tiny SOT23 6 pin package so it will barely be visible once soldered into the circuit.
PICKit Programmer
To put the program onto the PIC, we're going to need a programmer. To do that job I've chosen to use a microchip PICKit programmer. It will load the .hex file onto the PIC10F202.
Copper Clad PC Board
For this project we're going to be making our own PCB so we'll need some copper clad PC board. We'll use etchant to eat away the extra copper after transferring toner from some glossy paper to get our circuit design onto this board.
Speaker
We don't need a fancy speaker here, just something small that does the job. The smaller the better, but we'll still want it to be loud, so make sure its a decent quality speaker. You could also use a buzzer, but then the sound would always remain the same tone & pitch.