By Cyrille Lothaire. Car Wiring. Publised at Saturday, July 08th 2017, 12:19:44 PM. This system uses a metal wire embedded underneath the road as a guide for the battery powered vehicles. This wire is flexible enough to be used on straights, curves and hills. The vehicles are fitted with a motorised chassis and rechargeable battery which pushes the vehicle forwards via a small motor and gear arrangement, following the guide wire. The magnet offset to one side on the chassis is what activates the various additional modules (more on those later).
By Claudine Nicolette. Electrical Wiring. Published at Thursday, November 30th 2017, 15:12:14 PM. Note that U4, a 10 MHz MEMS oscillator, is also very close to the microcontroller’s clock input pin. It’s always a good idea to minimize the length of traces carrying high-frequency digital signals. First of all, there are noise benefits: a shorter, more direct trace reduces the amount of noise that would otherwise be coupled into adjacent traces, and a shorter trace also reduces electromagnetic interference (EMI) because it is less effective as an antenna. The second issue is related to transmission-line effects. Minimizing trace length is a simple way to avoid problems related to signal reflections. However, reflection is not a significant concern at frequencies in the 10 MHz range, unless you are dealing with long interconnections or a very large PCB.
By France Barbara. Motor Wiring. Published at Wednesday, November 29th 2017, 13:27:40 PM. Speed can be varied by either changing the voltage or pulsing the motor. Most computer controlled DC motors are pulsed. Pulses of a fixed voltage are sent to the motor, usually by an Electronic Speed Controller or ESC. A pulse of 1.5 ms causes no motion. Wider pulses cause faster spinning in one direction. Shorter pulses cause faster spinning in the opposite direction. Eventually, an overstressed ESC stops pulsing and turns one wire on and one wire off, depending on the direction.
By Mailys Laurent. Electrical Wiring. Published at Tuesday, November 28th 2017, 06:55:28 AM. I always prefer to maintain a logical flow of signals and functionality in my PCB layouts. I think that this approach results in an easier design process and a better board. The AWG layout progresses from left to right: from power input and communication input/output, to the power supply circuitry, to the processor, to the DAC (which is controlled by the processor and constitutes the board’s transition from digital to analog), to the analog signal-conditioning circuitry, and finally to the output connector. Parts that don’t have a specific position in the functional flow—such as the oscillator (U4), the DAC’s passives (C16, R5, etc.), and the voltage reference (U3)—are arranged near the components that they support.
By Olivier Constance. Car Wiring. Published at Monday, November 27th 2017, 06:22:09 AM. Use insulating tape in a spiral to bind wires together. If you have to lead a new wire along a difficult route - to the rear of the car, for example - you could take the opportunity to lead a spare wire at the same time, for any accessory you might want to fit later. Cover the end of a spare wire with insulating tape to prevent an electrical short circuit. Identifying cable sizes 14/30 cable 65/30 cable High-tension (HT) lead The starter cable Types of cable.
By Cyrille Lothaire. Motor Wiring. Published at Thursday, November 23rd 2017, 17:35:26 PM. Stepper motors are like a servo motor in that they move to a spot and hold their position. But they can also spin like a DC and Brushless Motor. They can not hold their position as strongly as a servo motor, and they can not spin as fast as a brushed or brushless motor.
By Dorian Yannic. Electrical Wiring. Published at Wednesday, November 22nd 2017, 13:04:57 PM. As you may have noticed, this is one of those annoying situations in which the pin configuration is the opposite of what you want: the DAC’s input pins move from bit 7 to bit 0 going downward, whereas the MCU’s output pins move from bit 7 to bit 0 going upward. I couldn’t remedy this by re-assigning the microcontroller pins because I wanted the data bits to correspond to the actual bits of the Port 2 register (so that I could write a full byte to the DAC without moving bits around). So I ended up with some awkward routing, but nothing terrible.
By Adrienne Emmanuel. Car Wiring. Published at Friday, November 17th 2017, 02:23:17 AM. Push a screwdriver blade through the grommet carefully to enlarge it for the new cables, taking care not to damage insulation on existing wires. If you pass a cable through a new hole, fit the hole with a grommet. To pass wires up door pillars or behind trim, tape them to a piece of fairly stiff wire, poke it carefully behind the trim or up the pillar, and pull it through at the far end, bringing the wire with it.
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