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Leaving about 8 inches of wire loose, start winding the enamel-coated wire around the rod, starting about 1^1 ⁄ 4 " from one en ...
Attach Velcro to the battery packs and the box and then secure the battery packs in the box. Insert the wires from the speaker, ...
As you insert the wires, cut each of them to the length needed to reach the assigned terminal block and strip the insulation fr ...
Trying It Out.................................................................................................. At this point, t ...
184 Part II: Sounding Off! ...
Part III Let There Be Light 14_009683 pt03.qxp 6/22/06 9:36 PM Page 185 ...
In this part... T homas Edison discovered what fun light can be in electronics projects when he invented the light bulb. In the ...
Chapter 9 Scary Pumpkins In This Chapter Eyeing the schematic Checking off the parts list Breadboarding the pumpkin circuits ...
You can see the finished pumpkin in Figure 9-1. Here’s the big picture of this pumpkin project: Put together two electronic cir ...
Should you be lucky enough to have an oscilloscope perched on your workbench, you can see that a 38 kHz square wave looks someth ...
IC1is the other key component of this circuit. This is an LM555 timer chip that you use to generate a square wave at its output ...
The IR detectoris the key component of this circuit. It contains a photo- diode that detects infrared light and an integrated c ...
For a brighter light, try using an LED with a clear glass shell instead of a translucent shell. LED2provides a steady light. We ...
S1is a normally open (NO) pushbutton switch that when depressed, connects Pin 27 of IC1 to ground. This is how you record sound ...
Perusing the parts list........................................................................ In addition to buying the two pl ...
Talking pumpkin parts list Here’s your shopping list for building your talking pumpkin. This project involves the following part ...
4.7 microfarad electrolytic capacitor (C2) Four^5 ⁄ 8 " 6-32 screws Four 6-32 nuts 5.1 kohm resistor (R1) 470 kohm resistor ...
SPST toggle switch, also referred to as on/off switch(S2) Four AA battery pack with snap connector Six 2-pin terminal blocks ...
The three terminal blocks shown in this figure will be used to connect two wires each to various components in the circuit. The ...
Solder the black wire from a battery snap to one lug of the on/off switch and solder a 5" black wire to the other lug of the on ...
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