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RGB LEDs Colour Mixing Controller - Lab Report Example

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RGB LEDs Colour Mixing Controller

The primary colour circuit referred to as the RGB LED driver circuit includes individual light emitting diodes that were used in the experiment. Given that this circuit combines three LEDs, it provides a gateway for one control such that achievement of the three individual colours could be made. The sensor circuits were used to measure the intensities of light produced from each diode. By amplifying negative output voltage, polarity of this circuit will be inverted by use of an inverting amplifier. Then this voltage is directed to RGB LED circuit above and in practicality, to the inputs of P1C1F872 terminals A/D. The last part of the circuit encompasses the switching control unit specifically made for purposes of switching the controller on and off and thus feeding with lighting instructions. Aims and objectives The major aim of designing a light emitting diode mixing controller is largely for managing and controlling light emitting diodes colour points. It is also responsible for maintaining the controlled light colours to produce desired lighting effects. Another aim is to reduce cases of failed colour lighting in producing the RGB effect. For these aims to be achieved, specific objectives are necessary. Firstly, identification of all required equipment such as LEDs and power sources with appropriate current feeding is made. Secondly, the main controller is broken down into stages such that each stage can produce an independent controller for the purposes of achieving desired lights at each stage. Lastly, every stage involved use of assurance techniques to ensure that required voltages were attained. Introduction Lighting systems have been identified as some of the most beautiful creations of electronic engineering. Achieving lighting effects depends on the equipment used, mostly, LEDs. Given that most lighting designs employ the single LED technology, RGB employees the use of three Light emitting diodes, each with a corresponding primary colour. Designing and implementing RGB LEDs controller is a complicated multistage process. Achieving accuracy has been identified as one of the greatest milestones in practical electronic engineering design (Box 2010). Given that such designs need multidimensional controlling, there is greater need for having more than one controller for the three LEDs in the circuit. Therefore in this RGB LEDs controller project, various stages were involved due to complexities of the whole process. While white emphasis has been laid in this experiment, combination of other colours is necessary to reduce monotony in lighting and thus add to an interest feature of the experiment. The colours preferred are not purely primary but intermediates of the primary colours and therefore the preference in choice of colours inclined towards red, blue and green (Smith, 2011). Under normal circumstances and chosen required voltage limits, the three light emitting diodes will be able to produce white light. For instance at RVL VR, VG and VB for Red, Green and Blue respectively, white colour will be visible. On reducing the amount of RVL for Blue to suiting level and maintaining the other colours, red light will be produced. On further addition of RVL for blue and reduction of red while green is maintained blue light will be visible. The working of any design marks a great step in implementation of any process. Therefore in order to implement this design, various actions will be followed for approval and consequently moving from one stage to another ...Show more


RGB LEDs Colour Mixing Controller Name: Institution: Date: Synopsis of the experiment In the experiment, the controller will be designed to maintain LED colour points within a colour mixing strip. In order to achieve this, conditions of communication at each stage were set…
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