Robot Building for Beginners, Third Edition

(Marvins-Underground-K-12) #1

CHAPTER 15 ■ COMPARATORS


Connect IC1 to the sensor test points (look ahead at Figure 15-7, if necessary) using reinforced jumper
wire, rather than flat wire. The jumper wire crosses over other parts on the board, reaching the test points
with ease. Additionally, the test-point ends of reinforced jumper wires can be pulled and positioned at other
points for testing purposes.


Figure 15-7. Playing with the brightness sensors; making the LEDs blink


Figure 15-6. Brightness comparator circuit built on a solderless breadboard

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