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If you don’t get the results we got, here are some options to check out: Check that all the batteries are fresh, tightly insert ...

Chapter 13 Chapter 13: Sensitive Sam Walks the Line................................................................... In This C ...

Sports two eyes:These eyes help Sam figure out where to go. Sam’s eyes— phototransistors pointed at the floor — sense infrared ...

Here are the types of activities you’ll do in this project: Put together the electronic circuit for the remote control transmit ...

Pin 14is a transmit enable pin. When you press the normally open (NO) pushbutton switch between Pin 14 and ground, the encoder ...

Helping Sam receive his commands ................................................ The receiver circuit that Sam uses to make sen ...

IC1decodes the signal sent by the transmitter. Pins 10, 11, 12, and 13 are outputs of the decoder that are at 0 volts if the co ...

ahead, you put the toggle switch connected to the encoder Pin 10 in the closed position and push the transmit button. To ask Sam ...

(^215) 1 14 4 3 IC 1 16 6 5 8 7 9 18 10 13 12 R1 8 1 RECEIVE R MODULE VR1 VOUT VIN + 4 5 6 7 2 6V 6V 2 10 7 15 6 14 13 ...

Building Alert: Construction Issues ........................................................... Sam is sensitive, and so are som ...

SPST normally open (NO) momentary push button switch (S4) Holtek HT12E encoder (IC1) 1 megohm resistor (R1) TWS-434 RF trans ...

Running down receiver and container parts .................................. The circuit that takes transmitted signals and expl ...

Three 4 AA battery packs with snap connectors Ten 2-pin terminal blocks Four 8-32 1^1 ⁄ 2 " panhead screws Four 8-32 nuts F ...

Taking Things Step by Step......................................................................... The steps involved in making ...

Solder an antenna wire to Pin 4 of the transmitter module, as shown in Figure 13-8. See the earlier “Building Alert: Constructi ...

Insert wires to connect the IC, voltage regulator, transmitter, and the terminal blocks to the ground bus. Then insert a wire b ...

Insert wires to connect the IC, voltage regulator, and transmitter to +V; then insert a wire between the two +V buses to connec ...

Insert wires to connect the IC, voltage regulator, transmitter, and ter- minal blocks, as shown in Figure 13-12. The next step ...

On the end of the right side of the box, you can see the hole used to feed antenna out of box. Figure 13-14: Use this hole to fe ...

See Chapter 4 for more information about choosing drill bit sizes for par- ticular components. In that chapter, we also offer ad ...