Electronics_Projects_For_Dummies
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350 Part IV: Good Vibrations
3.Insert wires to connect each component and terminal to the +V bus and insert a wire between the two +V buses to connect them, as shown in Figure 14-6.
In this figure, four wires have been added:
•Three shorter wires connect components to +V bus (marked with a + on this breadboard).
•The long wire on the left connects the two +V buses.
Figure 14-6:
Connect components to the +V bus.
4.Insert wires to connect the voice chip IC to the terminal blocks and to the open regions of the breadboard where discrete components will be inserted, as shown in Figure 14-7.
Chapter 14: Couch Pet-ato 351
open region of breadboard to terminal block for microphone
IC Pin 17 to open region of breadboard
IC pin 27 to terminal block for record switch
IC Pin 21 to open region of breadboard
Figure 14-7:
Connect the IC to the terminal blocks and available locations for discrete components.
IC Pin 20 to open region of breadboard
IC Pin 14 to terminal block for speaker
IC Pin 15 to terminal block for speaker
5.Insert discrete components and the tilt sensor in the breadboard, as shown in Figure 14-8.
Chapter 14: Couch Pet-ato 353
Figure 14-9:
Drill holes for the switches, microphone, and speaker.
7.Attach the speaker, switches, and microphone to the box, as shown in Figure 14-10.
We used 5⁄8" 6-32 screws and nuts to attach the speaker to the box. By creating a very tight hole for the microphone, we could press-fit it into the hole. (Press-fitting means that you don’t need glue or another method to keep something in place.) The record switch was also press-fitted into a hole although we did use just a drop of glue to secure it. The on/off switch was attached with the supplied nut.
354 Part IV: Good Vibrations
On/Off switch
Microphone
Figure 14-10:
Attach the speaker, switches, and microphone to the box.
Speaker |
Record switch |
8.Connect 6" wires (any color will work just fine) to the speaker and the record switch and solder them, as shown in Figure 14-11.
Chapter 14: Couch Pet-ato 355
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Black wire to microphone |
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Wires to speaker |
Wires to on/off switch |
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Figure 14-11:
Couch Pet-ato box with wires soldered to switches, microphone, and the speaker.
Wires to record switch
Red wire to microphone
9.Connect the black wire from the battery pack snap and another 6" black wire to the on/off switch and solder them together, as shown in Figure 14-11.
10.Connect a 12" red wire and a 12" black wire to the microphone and solder them, as shown in Figure 14-11.
Figure 14-12 shows which lead of the microphone you should solder the red and black wires to.
11.After the wires cool, wrap the solder joints with electrical tape to prevent them from touching each other.
356 Part IV: Good Vibrations
Lead that red wire is attached to
Lead that black wire is attached to
Figure 14-12:
Identifying the microphone leads to which you will solder wires.
Don’t get sloppy now! Heed all the safety precautions about soldering that we provide in Chapter 2. For example, don’t leave your soldering iron on if you’re not around. And for heaven sakes, don’t drop it in your lap when it’s hot!
12.Attach Velcro to the battery pack, breadboard, and box. Attach the battery pack and breadboard to the box, as shown in Figure 14-13.
Note that we used three wire ties in the box to secure the wires and keep them out of the way.
Chapter 14: Couch Pet-ato 357
Figure 14-13:
Couch Pet-ato with battery pack, breadboard, and wire ties attached.
13.Attach the wires from the battery pack snap connector, on/off switch, record switch, microphone, and speaker to the terminal blocks, as shown in Figure 14-14.
When attaching the wires to the terminal blocks, cut the wires to the length you need and strip the ends.
358 Part IV: Good Vibrations
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Black wire from microphone |
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Wires from record switch |
Red wire from microphone |
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Figure 14-14:
Attach wires to terminal blocks.
Red wire from battery pack |
Wires from speaker |
Wire from on/off switch |
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14.Close and latch the lid.
That’s it! The completed box is shown in Figure 14-15.
Chapter 14: Couch Pet-ato 359
Figure 14-15:
The Couch Pet-ato, all put together.
Trying It Out
Okay, it’s time for Fluffy or Rover to meet his or her newest adversary in the fight over couch real estate.
Follow these steps to operate your Couch Pet-ato:
1.Slip in the batteries.
2.Flip on the on/off switch.
3.Press the recording button and hold it down while you speak your message or create a pet-annoying noise into the microphone.
4.Place the Couch Pet-ato on your furniture.
5.Drop your animal on the furniture (gently) and watch the fur fly!
Be sure that the Couch Pet-ato box is securely closed and latched. You don’t want Fluffy to get into the works and chew up the wires or a resistor and choke.