By Cyrille Lothaire. Electrical Wiring. Publised at Thursday, December 28th 2017, 10:45:09 AM. 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 Olivier Constance. Car Wiring. Published at Sunday, December 31st 2017, 00:36:48 AM. But it is better to replace the terminal once corrosion has destroyed the surface coating. Making repairs to the loom Use a circuit tester to check if single wires are damaged. The wiring loom itself seldom goes wrong, but after other repairs have been made, a cable may be trapped and its insulation cut through, causing a short circuit.
By Fleurette Nina. Motor Wiring. Published at Saturday, December 30th 2017, 23:49:44 PM. This means that when the next electromagnet is turned on and the first is turned off, the gear rotates slightly to align with the next one. From there the process is repeated. Each of those rotations is called a "step", with an integer number of steps making a full rotation. In that way, the motor can be turned by a precise angle.
By Cyrille Lothaire. Motor Wiring. Published at Saturday, December 30th 2017, 22:36:59 PM. Bipolar motors have a single winding per phase. The current in a winding needs to be reversed in order to reverse a magnetic pole, so the driving circuit must be more complicated, typically with an H-bridge arrangement "however there are several off-the-shelf driver chips available to make this a simple affair". There are two leads per phase, none are common.Static friction effects using an H-bridge have been observed with certain drive topologies.
By Gaspard Magalie. Electrical Wiring. Published at Saturday, December 30th 2017, 21:46:15 PM. Fixtures are more suited for the flexible circuit boards as well as the fragile and thin PCBs. However, each new board design requires its custom fixture which can take between three and four days for a manufacturer to produce and deliver. As such, using fixtures can add up the costs and time to produce the PCBs.
By Mailys Laurent. Electrical Wiring. Published at Saturday, December 30th 2017, 21:23:01 PM. Depanelization is the process of separating the individual boards from the main array and usually depends on the panelization method applied. The choice depends on the clearance to provide at the edges of the PCB, and the presence of sensitive SMT devices, or hanging connectors near the edges. There are automatic methods, such as the laser cutting or depaneling router, as well as manual methods that involve breaking the tabs using hands or other tools.
By Olivier Constance. Electrical Wiring. Published at Saturday, December 30th 2017, 19:12:00 PM. This PCB, like almost all of my PCBs, is a four-layer board. In my opinion, it is not wise to restrict yourself to two layers unless you’re dealing with a very simple circuit or you really need to cut costs. The four-layer arrangement is beneficial in terms of routing and performance: routing, because via connections to internal planes almost completely eliminate power and ground traces; and performance, because the internal planes allow for low-resistance, low-inductance power and ground connections. The extra top-layer and bottom-layer real estate opened up by all the internal-plane connections come in very handy when you need to provide a generous copper area for improved thermal performance (for example, to make sure that your LDO or your motor driver doesn’t overheat and enter thermal shutdown).
By Dorian Yannic. Motor Wiring. Published at Saturday, December 30th 2017, 17:51:58 PM. Outrunners and inrunners both use the same ESC. This ESC is different than that of the brushed DC motor. There are three wires going to the motor instead of two. The wiring between the ESC and the Arduino consists if the same 5 wires. The three wires give the brushless motors more pulling power. Understanding this helps understand stepper motors below.
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