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Step 4Step 1: parts layout
Lay out parts on perf board to get an idea for how they will all fit together (and stay out of each other's way). I used a perf board with small copper pads at each of the holes because they can be helpful for anchoring parts. Thread the leads through the holes so that the parts are arranged something like in Figure 1.
You may want to bend the part's leads slightly so that they do not fall out of the perf board too easily. You may also want to eventually anchor the speaker's magnet side to the perf board by means of a small patch of double-stick tape or it will flop around in an annoying way. Warning: do not place the CMOS IC on the board yet! Place only the 14 pin DIP socket and keep the IC in its protective packaging until you are finished with building the circuit board.
Figure 2 shows a front photo of my parts layout.
Figure 3 shows a rear view of the same parts on the circuit board.
Note that I used a 47pF capacitor in parallel with a 22pF capacitor for C3 because I did not have a 68pF handy. It makes no real electrical difference.
You may want to bend the part's leads slightly so that they do not fall out of the perf board too easily. You may also want to eventually anchor the speaker's magnet side to the perf board by means of a small patch of double-stick tape or it will flop around in an annoying way. Warning: do not place the CMOS IC on the board yet! Place only the 14 pin DIP socket and keep the IC in its protective packaging until you are finished with building the circuit board.
Figure 2 shows a front photo of my parts layout.
Figure 3 shows a rear view of the same parts on the circuit board.
Note that I used a 47pF capacitor in parallel with a 22pF capacitor for C3 because I did not have a 68pF handy. It makes no real electrical difference.
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