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If you want to learn how to change branches or programs, you need to follow rc cars guidelines. Or even if the purpose of assembling this project is clearly didactic, you can choose to place on each output pin of the micro b port a LED with a current limiting resistor of 100 ohms. Circuit displays The circuit shows very simple and easy to understand. The PIC is responsible for everything, as expected. The switch labeled 'V' determines the speed. The other switch, marked with a 'D' can make the output sequence to the right (Rb0 to RB7) or left (from Kb7 to Rb0). The LEDs on the logic board are placed by simple monitoring. Although we use a clock based on a 4MHz crystal, since this system does not require precision can be armed with an RC network without any problems. The supply rc cars voltage can be anything between 4 and 6 volt 1 amp for any of the options put together. While it sounds like a lot of current 1A, you may then modify the software to appear negative or LED's to illuminate several branches at once, so that the current begins to flow harder. If you want to control loads such as incandescent lamps 220v or reflectors will have to assemble the appropriate power interface. Some items act as solid state switches, which are controlled by the coupler MOC3041 MOC3040 or which include detection circuitry 0v crossing which makes switching occurs without effective power. In the place of triacs that can be placed either 400v or 1500w support, such as TIC226D. It is important to properly handle the power triac must be equipped with a heat sink. If the sink is going to be individual for each triac can be fitted without insulation. If you were to use a large single sink is necessary to electrically isolate each triac through the mica spacers and washers and bushings suitable plastic. The RC set placed in parallel with the triac acts as a filter for possible disturbances that may occur during switching. If mounting the interface on a printed rc cars circuit board is imperative that the courts are reinforced 220v bare wire welding to fit the current drive. Another option is to build rods of high-performance LEDs which produce nearly three times the brightness than a conventional LED. 7 Putting diodes in series is achieved by connecting to 12V without the need for a current limiting resistor, but as expected, the port is not capable rc cars PIC micro drain enough current to handle directly.
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