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Summary of Contents for Variobot varikabo
- Page 2 • Since varikabo doesn’t have a cover, be extra • Caution: The varikabo kit is not a toy and is careful to keep metal objects and tools from intended solely for educational, instructional, causing a short circuit. and experimental purposes. Any liability is •...
- Page 3 Although the constructions and circuits Battery Information: ● introduced in this instruction manual were The kit requires a 9 V battery, which is not ● designed and tested with as much accuracy included in the package. and detail as possible, errors cannot be entirely excluded.
- Page 4 Introduction We are pleased you have chosen this versatile Building an autonomous robot was never easier! robot assembly kit. varikabo offers you an exciting The control circuits are built using four small circuit and playful approach to electronics. You will boards.
- Page 5 A) Assembly B) Functions After a brief introduction to soldering, the The twelve functions of varikabo are explained in assembly instructions show you step by step and the experiment instructions from page 28 with numerous illustrations how to fit the onwards.
- Page 6 • Soldering iron and solder varikabo kit. • Possibly black insulating tape Auxiliaries (for varikabo FT) • Soldering iron: 20 bis 30 W / 300 bis 350°C • Solder: 0.5 bis 0.7 mm in diameter • Small side cutter •...
- Page 7 3. Press the soldering tip Tips simultaneously against the Heat for a sufficiently long time and do not ● solder pad and the lead of "dab" with the soldering iron the component for about one second so that both are Do not heat for too long - otherwise the solder ●...
- Page 8 Electronics...
- Page 16 Grooves inside 1 x click...
- Page 17 Tighten...
- Page 18 Grooves on the front...
- Page 22 FT...
- Page 26 To ensure varikabo’s sensors aren’t blinded by the Swap the right sensor with the left sensor and light sources, make sure varikabi is well positioned point them about 45° to the side. Test varikabo on in relation to lamps and windows. a smooth and light-colored floor.
- Page 27 The center sensor is connected incorrectly. varikabo only drives straight ahead. ● varikabo gets stuck on the ground. varikabo is placed lopsided on the cable ties. ● The surface is too uneven for varikabo. ● If none of these causes apply to your problem,...
- Page 28 • Acceleration mode / Braking mode varikabo stands still If varikabo is moving fast, its eye LEDs light up varikabo moves slowly red. If varikabo is not moving, the LEDs light up blue.
- Page 29 On the following six pages, you will learn how to Use the selector switch to decide whether the set up each function. If varikabo does not sensor signals are connected directly (=) or immediately work as expected, readjust the reversed (×) to the transistors (T...
- Page 30 (e.g. lines (e.g. black insulating over white paper strips on tape). a dark background). varikabo accelerates on varikabo stops at the end straights and brakes in of the line. sharp curves. Setting: Setting: • Light follower •...
- Page 31 The ambient light should not be too strong for this Adjust the distance between the side sensors to function so that varikabo can recognize the light the size of the object. Experiment with the well. Experiment with the distance and inclination inclination of the sensors so that both following of the side sensors.
- Page 32 The further down you point the side sensors, the Adjust the distance between the side sensors to closer varikabo moves to obstacles. The middle the size of the object to be tracked. Adjust the tilt sensor must be positioned slightly above the angle of the middle sensor so that it is only obstacles.
- Page 33 If you hold your hand varikabo always turns on time at the edge. Adjust over varikabo, it will only move straight ahead the tilt angle of the middle sensor so that varikabo without paying attention to its surroundings. stops on a light-colored surface.
- Page 34 The further you point the middle sensor upwards, First hold your hand over varikabo to stop it. Then the closer varikabo moves to the lamp. If you hold slowly move your hand forward or to the side so your hand between the lamp and varikabo, it will that varikabo can follow it.
- Page 35 60° upwards. vertically upwards. If you place varikabo on the floor at some distance For this function, it is particularly important to use from the lamp, it will move quickly towards the very uniform lighting. The inclination of the light.
- Page 36 Light Follower Functions Crossed Sensor Cables...
- Page 37 Shadow Follower Functions Parallel Sensor Cables...
- Page 38 Acceleration Functions To select the acceleration functions, set the front switch to "=" or "FAST".
- Page 39 Braking Functions To select the brake functions, set the front switch to "×" or "STOP".
- Page 40 A Anode (+) The 150 Ω (Ohm) resistor in the varikabo kit limits C Cathode (–) the current flowing through the two LEDs. The first Additionally, LEDs require a current-limiting brown ring stands for "1", the green for "5", the...
- Page 41 = 1.4 V to switch through. To control varikabo's motors using sensor signals, so-called Darlington transistors are used. These In order for varikabo's motors to respond in have a particularly high current amplification of opposite directions to the left and right β...
- Page 42 The illustration on the bottom left shows a simple collector configuration with an NPN transistor, a common base, common emitter, and common collector. varikabo uses the common collector battery, and a motor. On the bottom right is the configuration. It’s called common collector (CC), corresponding circuit with a PNP transistor.
- Page 43 • conductivity between collector (C) and emitter (E). If the middle sensor FT is lit up four times brighter than In the illustration, it can be seen that varikabo's and FT , a voltage four phototransistors FT , FT , and FT...
- Page 44 6) The control circuit Depending on how the sensors are connected to As a result, varikabo turns away from the light. the transistors via switch S and whether the If, on the other hand, the sensors were arranged sensors FT...
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