Project 4 Copyright © 2016 by Elenco® Electronics, Inc. All rights reserved. No part of this book shall be reproduced by any means; electronic, photocopying, or otherwise without written permission from the publisher. 753077 U.S.
Table of Contents Basic Troubleshooting Parts List How to Use Snap Circuits® About Your Snap Circuits® Parts Summary of Games in the LED MC (U29) Introduction to Electricity ! ! 1 2 3 4-6 7 8 WARNING: SHOCK HAZARD - Never connect Snap Circuits® to the electrical outlets in your home in any way! WARNING: CHOKING HAZARD - Small parts. Not for children under 3 years. WARNING: Moving parts. Do not touch the fan while it is spinning. Basic Troubleshooting Conforms to all applicable U.S.
Parts List (Colors and styles may vary) Symbols and Numbers Important: If any parts are missing or damaged, DO NOT RETURN TO RETAILER. Call toll-free (800) 533-2441 or e-mail us at: help@elenco.com. Customer Service ● 150 Carpenter Ave. ● Wheeling, IL 60090 U.S.A. Qty. ID Name r2 1 1-Snap Wire r3 3 r1 r6 r1 r1 2 4 5 r1 B3 r1 D2 r1 r1 r1 r1 r1 r1 Base Grid (11.0” x 7.7”) 2-Snap Wire 3-Snap Wire 4-Snap Wire 5-Snap Wire Battery Holder - uses three (3) 1.
How to Use Snap Circuits® Snap Circuits® uses building blocks with snaps to build the different electrical and electronic circuits in the projects. Each block has a function: there are switch blocks, light blocks, battery blocks, different length wire blocks, etc. These blocks are different colors and have numbers on them so that you can easily identify them. The blocks you will be using are shown as color symbols with level numbers next to them, allowing you to easily snap them together to form a circuit.
About Your Snap Circuits® Parts (Part designs are subject to change without notice). BASE GRID The base grid is a platform for mounting parts and wires. It functions like the printed circuit boards used in most electronic products, or like how the walls are used for mounting the electrical wiring in your home. BATTERY HOLDER The batteries (B3) produce an electrical voltage using a chemical reaction.
About Your Snap Circuits® Parts TRANSISTORS The PNP & NPN transistors (Q1 & Q2) are components that use a small electric current to control a large current, and are used in switching, amplifier, and buffering applications. They are easy to miniaturize, and are the main building blocks of integrated circuits including the microprocessor and memory circuits in computers.
About Your Snap Circuits® Parts MOTOR MODULES The programmable fan (M8) is a motor with an LED circuit. A motor converts electricity into mechanical motion, in the form of a spinning shaft. In the light motor electricity is transported through the motor shaft to power an LED circuit, with LEDs mounted on the fan blade. The motor spins in both directions, but the light circuit only works in one direction.
Summary of Games in the LED MC (U29) # Name 1 Arcade 4 2 Fast Arcade 5 3 Faster Arcade 5 4 Lucky Doubles 18 5 6 7 Lucky Sixes, Unlucky Ones 19 Risk & Reward 20 3 Second Hold 22 8 5 Second Hold 23 9 10 Second Hold 24 10 11 -7- Sample Project Description 20 Second Hold Numbers & Letters 25 26 Every few seconds it randomly turns on snaps 1, 4, & S-OUT, or plays a tune, or changes the LED display. Used in many projects. Same as Game 1 but changes faster.
Introduction to Electricity What is electricity? Nobody really knows. We only know how to produce it, understand its properties, and how to control it. Electricity is the movement of subatomic charged particles (called electrons) through a material due to electrical pressure across the material, such as from a battery. There are two ways of arranging parts in a circuit, in series or in parallel.
DOs and DON’Ts of Building Circuits After building the circuits given in this booklet, you may wish to experiment on your own. Use the projects in this booklet as a guide, as many important design concepts are introduced throughout them. Every circuit will include a power source (the batteries), a resistance (which might be a speaker, LED (which has an internal protection resistor), motor, integrated circuit, etc.), and wiring paths between them and back.
Advanced Troubleshooting (Adult supervision recommended) Elenco® is not responsible for parts damaged due to incorrect wiring. If you suspect you have damaged parts, you can follow this procedure to systematically determine which ones need replacing: 1. Red LED (D1), green LED (D2), red/yellow LED (D10), speaker (SP2), and battery holder (B3): Place batteries in holder.
Project Listings Project # 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 -11- Description Page # Red Light 13 Lights 13 Reverse Lights 13 Arcade 14 Fast Arcade 14 New Pattern Arcade 14 Arcade Dice 15 Word Fan 15 Just the Fan 15 Disco Ball 16 Disco Pattern 16 Reverse Disco Ball 16 Disco Ball with New Pattern 16 Just the Ball 16 Programmable Light Fan 17 Busy Circuit 18 Games Selector 19 Lucky Doubles 19 Lucky Sixes, Unlucky Ones 20 Risk & Reward 20 Enhanced Di
Project Listings Project # 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 Description Page # Machine Gun 44 Fire Engine 44 European Siren 44 Quieter Alarm Circuit 44 Quieter Machine Gun 44 Quieter Fire Engine 44 Quieter European Siren 44 Fan Flash Energy 45 Motor Flash Energy 45 Tri-Light Machine Gun 46 Hex-Light Machine Gun 46 Trip-Wire Alarm 47 Trip-Wire Alarm with Better Sound 47 Trip-Wire Machine Gun 47 Trip-Wire F
Project 1 + Turn on the slide switch (S1), and the red LED (D1) lights. Project 2 -13- Snap Circuits® uses electronic blocks that snap onto a clear plastic grid to build different circuits. These blocks have different colors and numbers on them so you can easily identify them. Build the circuit shown on the left by placing all the parts with a black 1 next to them on the board first. Then, assemble parts marked with a 2.
+ Project 4 Arcade Placement Level Numbers This circuit is shown on the front of the Snap Circuits® Arcade box. Use that picture to help in building it. YELLOW Disco Cover Disco Cover Assembly Flat side (“D-fit”) ! Support Bar DM shaft Disco Cover Note: this is a 3-snap wire connecting these points. Build the circuit shown above by placing all the parts with a black 1 next to them on the board first. Then, place parts marked with a 2, and then parts with a 3.
Project 7 Arcade Dice Use the project 4 circuit but select game 4 (instead of game 1), then press button B. When the display shows “Go” press button B to start the game. ● Hold down button C for a few seconds and then release it. ● Two random digits from 1 to 6 will be shown on the display (like rolling 2 dice). ● If the player rolls “doubles” (i.e. the two digits are the same), a winning song will be played, the disco motor (DM) spins & lights, and the game starts over (“Go” is shown on the display again).
Project 10 Disco Cover Disco Cover Assembly Disco Cover Support Bar DM shaft SUPPORT BAR Disco Ball Placement Level Numbers Build the circuit shown on the left by placing all the parts with a black 1 next to them on the board first. Then, assemble parts marked with a 2. Connect the two blue jumper wires to the snaps on top of the disco motor (DM). Install three (3) “AA” batteries (not included) into the battery holder (B3) if you have not done so already.
Project 15 Programmable Light Fan Note that there is a 3-snap wire under the selector (S8) that is partially hidden. Turn on the slide switch (S1). The programmable fan (M8) spins and slowly displays messages. Button A (on S8) S2 C (on S8) Controls UP MODE DOWN Description Press & hold to ERASE ALL MESSAGES. Press & hold to enter PROGRAM MODE. Press to move to the next message. Button Functions in NORMAL MODE: Button B (on S8) does nothing. Erased messages can only be restored by re-entering them.
Project 16 Busy Circuit This circuit has a lot going on. ! Disco Cover SUPPORT BAR WARNING: Moving parts. Do not touch the fan while it is spinning. Place one of the disco covers on the disco motor (DM) shaft. Note that both sides of the support bar are “D-fit”. Turn on the slide switch (S1). An alarm sounds, the disco motor spins & lights, the LEDs (D1, D2, & D10) light, and the programmable fan spins and displays a message. Push the press switch (S2) several times to display different messages.
Project 17 Games Selector This simple circuit is intended as an introduction for how to select games on the LED-MC (U29). Turn on the slide switch (S1); the display on the LED-MC shows “00”. Press the A button on the selector (S8) to increase the ones digit on the display, and press the C button on the selector to increase the tens digit on the display.
Project 19 This circuit uses the PNP transistor (Q1) to amplify the signal to the speaker (SP2), making the sound louder. Project 20 Use the Project 18 or Project 19 circuit but select Game 6 using the game selection procedure in project 17. Once the player selects Game 6 and sees “Go” on the display, then: ● Hold down button C for a period of time and then release it. ● When button C is released, two random digits from 1 to 6 will be shown on the display (like rolling 2 dice).
Project 21 Enhanced Dice Game Use this circuit but select Game 4 using the game selection procedure in project 17. Once the player selects Game 4 and sees “Go” on the display, then ● Hold down button C for a few seconds and then release it. ● Two random digits from 1 to 6 will be shown on the display (like rolling 2 dice). ● If the player rolls “doubles” (i.e. the two digits are the same), a winning song will be played and the game starts over (“Go” is shown on the display again).
Project 22 3 Second Hold Use this circuit but select Game 7 using the game selection procedure in project 17. Once the player selects Game 7 and sees “Go” on the display, then: ● Try to hold down button C for exactly 3 seconds, then release button C. ● The display will show the number of seconds the player held button C down. ● If the player held button C down for 3 seconds, a winning song will play while the disco cover spins, and the game starts over (“Go” is displayed to play the game again).
Project 25 20 Second Hold Project 26 Numbers & Letters Use the Project 22 circuit, but select Game 10 using the game selection procedure in project 17. Once the player selects Game 10 and sees “Go” on the display, then: ● Try to hold down button C for exactly 20 seconds, then release button C. ● The display will show the number of seconds the player held button C down.
Project 31 Home Run Derby Game Use this circuit but select Game 12 using the game selection procedure in project 17. Once the player selects Game 12 and sees “Go” on the display, then: ● Press & release button B, and the derby will begin. ● A baseball pitch occurs where the red, yellow, and then green LEDs light up in sequence but at different speeds. ● The player needs to press button B at just the right time (after the green LED is displayed) to hit a home run.
Project 32 Use the Project 31 circuit but select Game 13 using the game selection procedure in project 17. Once the player selects Game 13 and sees “Go” on the display, then: ● Press & release button B, and the derby will begin. ● A baseball pitch occurs where the red, yellow, and then green LEDs light up in sequence but at different speeds. ● The player needs to press button B at just the right time (after the green LED is displayed) to hit a home run.
Project 34 Memory Game (easy) Use the Project 33 circuit, but select Game 15 using the game selection procedure in project 17. Once the player selects Game 15 and sees “Go” on the display, then: ● Press button B and the game will begin. ● A random sequence of lights will slowly flash and then the player has to repeat that sequence in the correct order by pressing button for the Red LED, button B for the Yellow LED, and button C for the Green LED.
Project 38 ! WARNING: Moving parts. Do not touch the fan while it is spinning. Twenty-One Use this circuit and select Game 19 using the game selection procedure in project 17. Once the player selects Game 19 and sees “Go” on the display, then: ● Press button C to get a first playing card (all jacks, queens, and kings are displayed as a 10). An Ace is displayed as an 11.
Project 40 Binary Coded Decimal Use this circuit and select Game 20 using the game selection procedure in project 17. Once the player selects Game 20 and sees “Go” on the display, then: ● Press button C and the LEDs will all go off and 0 will be on the U29 LED display. ● Continue to press button C and the 7-segment LED will increase by 1 each time you press button C, and the LEDs will go through a sequence as shown below.
Project 41 Blink Rate Changer Project 43 Turn on the slide switch (S1); the display on the LED-MC (U29) shows “00”. Press the A button on the selector (S8) to increase the ones digit on the display, and press the C button on the selector to increase the tens digit on the display. When the display shows “21”, press the B button on the selector to start. The red LED (D1) will be blinking, and its blink rate will be changing.
Project 44 Variable Disco Speed Turn on the slide switch (S1); the display on the LEDMC (U29) shows “00”. Press the A button on the selector (S8) to increase the ones digit on the display, and press the C button on the selector to increase the tens digit on the display. When the display shows “21”, press the B button on the selector to start. The red/yellow LED (D10) will be blinking at varying speed, and the disco motor (DM) will be spinning at varying speed. For best effects, view in a dark room.
Project 48 Bi-Color Light Turn on the slide switch (S1); the display on the LED-MC (U29) shows “00”. Press the A button on the selector (S8) to increase the ones digit on the display, and press the C button on the selector to increase the tens digit on the display. When the display shows “21”, press the B button on the selector to start. The red/yellow LED (D10) will be on continuously, but changing colors at varying speed.
Project 50 Dual Bi-Color Lights Turn on the slide switch (S1); the display on the LED-MC (U29) shows “00”. Press the A button on the selector (S8) to increase the ones digit on the display, and press the C button on the selector to increase the tens digit on the display. When the display shows “21”, press the B button on the selector to start. The red/yellow LED (D10) will be on continuously, but changing colors at varying speed.
Project 52 Funky Siren Turn on the slide switch (S1); the display on the LED-MC (U29) shows “00”. Press the A button on the selector (S8) to increase the ones digit on the display, and press the C button on the selector to increase the tens digit on the display. When the display shows “21”, press the B button on the selector to start. Strange sounds will be heard on the speaker (SP2). The LED MC (U29) is turning on the alarm IC (U2) in short bursts, and varying their duration.
Project 57 Funky Siren & Light Turn on the slide switch (S1); the display on the LED-MC (U29) shows “00”, and you hear a siren. Press the A button on the selector (S8) to increase the ones digit on the display, and press the C button on the selector to increase the tens digit on the display. When the display shows “21”, press the B button on the selector to start. Strange sounds will be heard on the speaker (SP2), and the red LED (D1) changes in sync with the sound.
Project 62 Tri-Light Funky Siren Turn on the slide switch (S1); the display on the LED-MC (U29) shows “00”. Press the A button on the selector (S8) to increase the ones digit on the display, and press the C button on the selector to increase the tens digit on the display. When the display shows “21”, press the B button on the selector to start. Strange sounds will be heard on the speaker (SP2), and three LEDs (D1, D2, & D10) change in sync with the sound.
Project 67 Hex-Light Funky Siren Turn on the slide switch (S1); the display on the LED-MC (U29) shows “00”. Press the A button on the selector (S8) to increase the ones digit on the display, and press the C button on the selector to increase the tens digit on the display. When the display shows “21”, press the B button on the selector to start. Strange sounds will be heard on the speaker (SP2), and six LEDs (D1, D2, D10, and three in the disco motor (DM)) change in sync with the sound.
Project 73 Siren Arcade Turn on the slide switch (S1); the display on the LED-MC (U29) shows “00” and you hear a siren. Press the A button on the selector (S8) once to make the display show “01”, then press the B button on the selector to start. Every few seconds one or more of the following will happen, randomly changing: the red LED (D1) lights, the yellow LED (D10) lights, the speaker plays a tune, the speaker plays a siren, the green LED (D2) lights, and the U29 LED display shows a random pattern.
Project 79 Disco Siren Place one of the disco covers onto the disco motor (DM). Turn on the slide switch (S1). The disco cover spins, lights project on the ceiling, and you hear a siren. Project 80 Disco Machine Gun Use the preceding circuit, but add a connection between the points marked B & C using a 1-snap and a 2-snap. Now it sounds like a machine gun. Project 81 Disco Fire Engine Disco Cover Use the preceding circuit, but remove the connection between B & C, and add a connection between A & B.
Project 84 Slow-Fast Disco SUPPORT BAR Place one of the disco covers onto the disco motor (DM). Turn on the slide switch (S1). The disco cover spins and lights project onto the ceiling. Push the press switch (S2) to speed up the disco cover. You can also tilt the circuit so the lights shine on a wall. The effects are best viewed in a dark room. Disco Cover Project 86 Dimmer Disco Use either of the two preceding circuits but move the end of the blue jumper wire from point B to point A.
Project 88 Slow-Fast Word Fan Turn on the slide switch (S1). The programmable fan (M8) spins and may slowly display messages. Push the press switch (S2) to speed up the fan and slowly display messages. ! Project 90 Slow-Fast Fan Use either of the two preceding circuits, but reverse the connection to the programmable fan (M8). The fan still spins, but it does not display any messages. WARNING: Moving parts. Do not touch the fan while it is spinning.
Project 92 + YELLOW Project 95 Selector Turn on the slide switch (S1). Press button C on the selector (S8) to light the red LED (D1), press button A on the selector to light the yellow LED (D10), or press button B on the selector to light both LEDs. Triple Select Use the project 92 circuit, but add the green LED (D2) and press switch (S2) as shown. Press buttons on S2 and S8 to light the LEDs.
Project 97 Toggle 00 Turn on the slide switch (S1). The LED display on the LED-MC (U29) toggles between on and off. Project 98 LED-MC Test Turn on the slide switch (S1); the display on the LED MC (U29) should show “00”. Select game 1 by pressing the A button on the selector (S8), then the B button. Every 2 seconds one or more of the following will happen, randomly changing: D1 lights, D2 lights, D10 lights, SP2 plays a tune, the U29 LEDs display a random pattern.
Project 99 Green Light + Turn on the slide switch (S1), and the green LED (D2) lights. Project 101 Project 100 Red/Yellow Light Replace the green LED (D2) with the red/yellow bicolor LED (D10); try it in both directions (red on right, and yellow on right). LEDs are light emitting diodes, which convert electrical energy into light. The color of the light depends on the characteristics of the material used in them.
Project 102 Alarm Circuit Build the circuit shown. When you turn on the slide switch (S1), the circuit produces a very loud alarm sound and also lights the green LED (D2). This circuit is designed to sweep through all the frequencies so even hard of hearing people can be warned by the alarm. Project 103 Machine Gun Use the preceding circuit, but add a connection between the points marked B & C using a 1-snap and a 2-snap. Now it sounds like a machine gun.
Project 110 Fan Flash Energy Hold down the press switch (S2) for a few seconds and then watch the red LED (D1) as you release the switch. The LED flashes briefly but only after the batteries (B3) are disconnected from the circuit. This effect is much easier to see in a dimly lit room. Do you know why the red LED flashes? It flashes because the motor in the programmable fan (M8) uses a magnetic field to spin the shaft. When the switch is released this energy creates a brief current through the LED.
Project 112 Tri-Light Machine Gun Turn on the slide switch (S1). Three LEDs are flashing and you hear a machine gun sound. The lower-right snap of the alarm IC is like an electrical gate, opening and closing quickly to let small bursts of electric current flow in. The bursts of electric current also flow through the green, yellow, & red LEDs (lighting them) and the speaker (which produces sound).
Project 114 Trip-Wire Alarm Turn on the slide switch (S1). The green LED (D2) comes on (indicating the circuit is ready), but otherwise nothing happens. Break the black jumper wire connection and an alarm sounds, lights shine, and things spin. You could replace the black jumper wire with a longer wire and run it across a doorway to signal an alarm when someone enters. Disco Cover Project 115 SUPPORT BAR The siren sounds in this project may seem distorted compared to other projects.
Project 119 Water Alarm Build the circuit shown, but initially leave the red & black jumper wires outside the cup. Turn on the slide switch (S1); nothing happens. Place the jumper wires into a cup of water and an alarm sounds! Variants: 1. Change the sound by using a 1-snap wire and a 2-snap wire to make a connection across points A & B, or A & D, or B & C. 2. Remove the NPN transistor (Q2) and instead connect the black jumper wire at point B. Don’t drink any water used here.
Project 122 WaterHuman-Drawn Machine Gun Use any of the projects 119-121 circuits, but add a connection between the points marked B & C using a 1-snap and a 2-snap. Now it sounds like a machine gun. Project 125 YELLOW Project 123 Project 124 Water-Human- Water-HumanDrawn Fire Drawn Engine European Siren Use any of the projects 119-121 circuits, but remove the connection between B & C, and add a connection between A & B. Now it sounds like a fire engine.
Project 128 Random Siren Selector Turn on the slide switch (S1); the display on the LED-MC (U29) shows “00”. Press the A button on the selector (S8) once to make the display show “01”, then press the B button on the selector to start. Every few seconds the speaker (SP2) randomly plays one of three siren sounds, and the U29 LED display shows a random pattern. Project 129 Fast Random Siren Selector Use the preceding circuit. Turn on the slide switch (S1); the display on the LED-MC (U29) shows “00”.
Project 132 Disco Arcade Show Turn on the slide switch (S1); the display on the LED-MC (U29) shows “00”. Press the A button on the selector (S8) once to make the display show “01”, then press the B button on the selector to start. Every few seconds one or more of the following will happen, randomly changing: the red LED (D1) lights, the disco cover spins, the lights on the disco motor (DM) light, the speaker plays a tune, and the U29 LED display shows a random pattern.
Project 134 Word Fan Arcade Show Turn on the slide switch (S1); the display on the LED-MC (U29) shows “00”. Press the A button on the selector (S8) once to make the display show “01”, then press the B button on the selector to start. Every few seconds one or more of the following will happen, randomly changing: the red LED (D1) lights, the yellow LED (D10) lights, the programmable fan (M8) spins and displays a phrase, the speaker plays a tune, and the U29 LED display pattern changes.
Project 136 Light Projecting Arcade Show Build the circuit as shown. Note that there is a 3-snap wire under the NPN transistor (Q2) that is partially hidden, and a 5-snap wire under the disco motor (DM), partially hidden. Turn on the slide switch (S1). The display on the LED-MC (U29) displays “00”, the programmable fan (M8) spins & lights, and the disco motor (DM) spins & lights. Press the A button on the selector (S8) once to make the display show “01”, then press the B button on the selector to start.
Project 138 YELLOW Project 139 There’s the Blue Light Use the preceding circuit, but add the press switch (S2) across the points marked A & B. Turn on S1 and push S2. With S2 pressed, the LEDs on the disco motor all shine brightly, but the others are off. Pressing S2 bypasses the D1, D2, & D10 LEDs, so the LEDs on the disco motor get the full battery voltage, making them brighter. This really helps the blue LED on the disco motor, because it needs lots of voltage to operate properly.
Project 142 SUPPORT BAR Slow Disco Ball Place one of the disco covers on the disco motor (DM) shaft. Turn on the slide switch (S1), then push and release the press switch (S2). The disco motor (DM) spins, but is not as fast as in project 10. The resistance of the speaker (SP2) reduces the voltage to the disco motor (DM), slowing it down. The disco motor needs more power to get started than it needs to keep spinning, so the press switch is used to get it started.
Project 145 Selector with Disco Ball? Turn on the slide switch (S1). Press buttons on the selector (S8); the disco motor (DM) may spin slowly, and its LEDs may light Then push the press switch (S2); the disco motor spins faster and its LEDs are brighter. The buttons in the selector (S8) have more electrical resistance than the button in the press switch (S2), and the disco motor needs a lot of power to operate, so the selector buttons cannot make the disco motor work as well as the S2 button can.
Project 147 Selector with Disco Ball - PNP This circuit is just like the preceding one, but uses the PNP transistor (Q1) instead of the NPN transistor (Q2). Note that the 5-snap wire is under the disco motor (DM), partially hidden. Place one of the disco covers on the disco motor shaft. Turn on the slide switch (S1), then push the any button on the selector (S8). The disco motor spins and its LEDs light.
Project 149 Selector with Word Fan Note that the 5-snap wire is under the programmable fan (M8), partially hidden. Push any button on the selector (S8). The programmable fan spins and displays a message. The selector (S8) cannot control the programmable fan directly, so this circuit uses the NPN transistor (Q2) to help. A small electric current flowing into the transistor through the selector controls a larger current flowing into the transistor through the programmable fan.
Project 151 Word Fan PNP Note that the 5-snap wire is under the programmable fan (M8), partially hidden. Push any button on the selector (S8). The programmable fan spins and displays a message. PNP and NPN transistors are similar, but current flows through them in the opposite direction. Project 153 ! Project 152 Fan PNP Use the preceding circuit but reverse the programable fan (M8). The circuit works the same, except that the fan does not display a message. WARNING: Moving parts.
Project 154 Adjusting Disco Cover Focus Turn on the slide switch (S1), and place the circuit in a dimly lit room with a flat ceiling. Hold one of the disco covers over the LEDs on the disco motor (DM), without using its support bar. Vary the height over the LEDs and see how it affects the focus. You can also try holding the circuit at an angle near a wall, and see how the pattens look on the wall. The disco covers are lenses, and changing their distance above the LEDs changes the focus of the light.
Project 158 PNP Transistor Turn on the slide switch (S1) - nothing happens. Now push the press switch (S2) and the red LED (D1) lights, but the green LED (D2) stays off. A transistor uses a small electric current to control a large electric current. Here pressing S2 makes a small current flow out of the PNP transistor (Q1) through the green LED, which triggers a large current out of the transistor through the red LED.
Project 160 6-Sided Dice Game: Race to the Finish Use this circuit and select Game 5 using the game selection procedure in project 17. The game begins when you see “Go” in the display. This game is for 2 or more players where each player has a number track as shown below (draw one track for each player). Players take turns rolling the six-sided dice by pressing button C for a period of time and then releasing it. The object of the game is to be the first player to reach the end of the track.
Project 163 6-Sided Dice Game: Free the Frogs Use the Project 160 circuit and select Game 5 using the game selection procedure in project 17. The game begins when you see “Go” in the display. This game is for 2 or more players where each player starts with 6 frog cages labeled 1 through 6. Every player also has 6 frogs. Before play begins, each player decides where to place their frogs.
Project 166 6-Sided Dice Game: Squares Project 167 6-Sided Dice Game: Coin Dice Use the Project 160 circuit and select Game 5 using the game selection procedure in project 17. The game begins when you see “Go” in the display. This game is for 2 or more players. Players should sit in a circle and take turns in a clockwise fashion rolling the dice by pressing button C for a period of time and then releasing it. After rolling the dice, take the difference between the two numbers.
Project 168 6-Sided Dice Game: Baseball Project 169 Simple Alarm Sounds Use the Project 160 circuit and select Game 5 using the game selection procedure in project 17. The game begins when you see “Go” in the display. This game can be played in solitaire or with 2 people. Start by having the visitor team roll the six-sided dice by pressing button C for a period of time and then releasing it.
Project 170 Green & Lots More Turn on the slide switch (S1). The green LED (D2) and all LEDs on the disco motor (DM) light. Compare this circuit to project 159. Here the current through the green LED (D2) controls the current through the LEDs on the disco motor (DM) using the NPN transistor (Q2), making all the LEDs on the disco motor bright. Project 172 Vibrato 2 Turn on the slide switch (S1); the display on the LED-MC (U29) shows “00”.
Project 174 Random Bi-Color Light Turn on the slide switch (S1); the display on the LED-MC (U29) shows “00”. Press the A button on the selector (S8) three times to make the display show “03”, then press the B button on the selector to start. Every few seconds the speaker (SP2) randomly plays one of three siren sounds, the U29 LED display shows a random pattern, and the red/yellow LED (D10) will be either red, yellow, or off.
Project 176 Arcade Blinking Display Turn on the slide switch (S1); the display on the LED-MC (U29) shows “00”. Press the A button on the selector (S8) three times to make the display show “03”, then press the B button on the selector to start. Every half second the speaker (SP2) randomly plays one of three siren sounds, the U29 LED display shows a random pattern, and the red LED (D1) will be on, the green LED (D2) will be on, or the display on U29 will be blinking.
Project 179 Disco with Sound Build the circuit as shown, place of the disco covers on the disco motor (DM), and turn on the slide switch (S1). The speaker (SP2) plays an alarm as the disco cover rotates. SUPPORT BAR Disco Cover Project 180 Disco with Sound (II) Use the preceding circuit, but connect points A & B using a 2snap wire and a 1-snap wire. The sound is different now.
Project 184 SUPPORT BAR Disco Cover Weird Sound Build the circuit as shown, place of the disco covers on the disco motor (DM), and turn the slide switch (S1). The speaker (SP2) makes sound and the disco cover may rotate. Project 185 Project 186 Weird Weird Sound (II) Sound (III) Project 187 Use the preceding circuit, but add the red/yellow LED (D10, in either direction) across points A & B.
Project 188 Start Stop Ball Build the circuit as shown, place one of the disco covers on the disco motor (DM), and turn on the slide switch (S1). Nothing happens. Press & release one of the buttons on the selector (S8) to start the circuit. To stop the circuit, push the press switch (S2) to reset it. SUPPORT BAR Project 189 Disco Cover Sound On by Thyristor Build the circuit as shown and turn the slide switch (S1).
Project 192 Sound and Light OnOff Thyristor SUPPORT BAR Disco Cover Project 193 Build the circuit as shown, place one of the disco covers on the disco motor (DM). Turn on the slide switch (S1) and then turn it off (keep it off). The green LED (D2) flashes once, the red LED (D1) lights, and the speaker (SP2) sounds. Push the press switch (S2) to reset the circuit. Variants: 1. Change the sound by placing the red jumper wire between points A & B. 2.
Project 194 Add One Turn on the slide switch (S1) and the LED-MC (U29) shows only a “0” in the left display. Press S2 and the number 1 shows. Every time you press S2 the number increases by 1, up to number 9. Then the LEDMIC (U29) resets to “0” again. Project 195 Add 10 Turn on the slide switch (S1) and the LED-MC (U29) shows “0 ” in the display. Push the press switch (S2) and the display doesnt change. You need to press S2 ten times for the number to change.
Project 197 +1 Beeper Turn on the slide switch (S1) and the LED-MC (U29) shows “00” in the display. Push the press switch (S2) and the number 1 shows and the speaker sounds. Every time you press S2 the number increases by 1. Project 198 Counting Sound Turn on the slide switch (S1) and push the press switch (S2) several times or hold it down for short periods. A sound plays as the display counts how many times you pressed S2 (holding S2 down makes it count automatically).
Project 200 SUPPORT BAR Disco Cover Project 201 Faster PushStart Disco Use the preceding circuit, but add the green LED (D2) across the points marked A & B (“+” side of D2 to point A). Now the disco motor (DM) starts easier and spins faster. Adding the green LED in parallel with the red LED increases the power to the disco motor, helping it to start and spin faster. -75- Push-Start Disco The disco motor needs a lot of power to start up, then less to continue spinning.
Project 203 Finale SUPPORT BAR Disco Cover ! WARNING: Moving parts. Do not touch the fan while it is spinning. Build the circuit as shown; note that the 5-snap wire is partialy covered by the NPN transistor (Q2), and a 3-snap wire is partially covered by the green LED (D2). Place one of the disco covers on the disco motor (DM). Turn on the slide switch (S1). A siren sounds, the disco motor spins & lights, and the display on the LED-MC (U29) displays “00”.
Notes -77-
Other Snap Circuits® Products! For a listing of local toy retailers who carry Snap Circuits visit www.elenco.com or call us toll-free at 800-533-2441. For Snap Circuits accessories, additional parts, and more information about your parts visit www.snapcircuits.net.
SCA-200 ARCADE Block Layout Important: If any parts are missing or damaged, DO NOT RETURN TO RETAILER. Call toll-free (800) 533-2441 or e-mail us at: help@elenco.com. Customer Service ● 150 Carpenter Ave. Wheeling, IL 60090 U.S.A. Note: A complete parts list is on page 2 in this manual. Disco Cover Disco Cover SUPPORT BAR Base Grid (11.0” x 7.
