HOW TO USE A BREADBOARD HOW TO
HOW TO USE A BREADBOARD SERIES

In this booklet you won't be handed all the answers. The glossary provides definitions and illustrations for terms that may be unfamiliar.There's no better way to learn than by making things yourself.

HOW TO USE A BREADBOARD HOW TO

Learn how to build the following circuits:ДЄs you gain experience building the circuits, you'll also learn how to read schematics - the shorthand language of electronics. With the projects in this handbook, you will learn how to use a light sensor, a potentiometer, a diode, a 555 timer, capacitors, transistors, and more! You'll also be challenged to actively figure out what else you can do with the circuits you have built. Bonus features include an X-Ray drawing of the inside of the breadboard and a guide to understanding resistor color codes.ДЄ solderless breadboard is the perfect platform for learning electronics, whether at home or in the classroom, because it can be used over and over again for different circuits. You'll learn-by-doing as you study the circuit diagrams and colorful drawings, working your way through each project. Bonus features include an X-Ray drawing of the inside of the breadboard and a guide t This full-color, illustrated handbook uses comic book-style panels to explain the basics of using a breadboard then it walks you through ten fun and educational projects. So the voltage at the base of transistor increases when the brightness of light decreases, and once it gets past the minimum threshold voltage required at the base of transistor, it turns on the LED.This full-color, illustrated handbook uses comic book-style panels to explain the basics of using a breadboard then it walks you through ten fun and educational projects. In the Dark Sensor Circuit (second diagram) when the LDR's resistance decreases when the intensity of light increases. You can now visualize what happens when you reduce the brightness of ambient light. Once this voltage increases above the required threshold voltageВ at the base, the LED turns on. In the Light Sensor Circuit (first diagram) when the brightness of light increases, the LDR's resistance reduces and so the voltage at the base of transistor increases (because if LDR resistance reduces, the voltage drop(gap) across the LDR, towards positive side decreases). This change in voltage at the common point between LDR and resistor is used the trigger the transistor by connecting it toВ base of the transistor.

HOW TO USE A BREADBOARD SERIES

We used a resistor in series with the LDR (basically a voltage divider) to convert the change in resistance of the LDR to change in voltage. For the transistor to turn on or to allow current to flow from collector to emitter, the voltage at the base should be above a certain threshold voltage. Some transistor basics: For an npn-transistor, the emitter,В collector are of n-junction and the base is of p-junction. So for these reasons, we move on to more functional circuit using transistor. The maximum load that the circuit can drive is also limited. Also, practically we would want the LED to turn on when it is dark and turn off when there's enough light. Some of them are: you can't control the brightness at which the LED exactly turns onВ or off. Exactly the opposite happens when you increase the brightness of ambient light.ДЄlthough this LDR andВ LED in series circuitВ is the easiest to make, it has some limitations. Now if you reduce the brightness of ambient light, the LDR's resistance increases, resulting in lesser current flowing through the circuit (remember: more the resistance, less the current) and so you will observe that the LED's brightness reduces. You can visually observe this effect by connecting the LDR in series with an LED and power up the circuit. Which means that when the intensity of light increases, the LDR's resistance reduces and vice versa. The resistance of LDR depends on the intensity or brightness of light incident on it and the relation is of inverse proportionality. The sensing component in this circuit is LDR (short form for Light Dependent Resistor or Photo-Resistor). Potentiometer (Only if you need adjustable sensitivity): 10K (For Light Sensor), 100K (For Dark Sensor).Resistors: 470R, 1K (For Light Sensor), 47K (For Dark Sensor).1 LDR (Light Dependent Resistor or Photo-resistor).Explanation ofВ how the circuit works is also included in the video. Watch the video above for detailed step by step instructions on how to build this circuit. The sensitivity a.k.a the brightness at which the circuit switches on the load can also be controlled by using a potentiometer. This circuit can be used to automatically control and turn on-off lights or any loads depending on the brightness of ambient light, by adding a relay at the output. A tutorial on How to make a Light Sensor / Darkness detector circuit on breadboard using LDR and a transistor.

How to use a breadboard