Follow the previous tutorial to assemble a 3D printer for 800 yuan
K800 is a low-cost 3D Printer Based on kosselmini. It reduces the cost by changing the design, but reduces the performance and cost-effectiveness.
The main changes are:Change the base bracket to-General BracketChange planetary step to-"proportional gear step"Change the straight-line slide to-> slideFish-eye Joint Parallel arm-"high-intensity parallel arm
Motor part:43mm long 42 step motor X4, 42 step for k800 (kosselmini) 3D pri
, similar to the "scattered grounding" wiring method, that is, the working ground and the protective ground are all drawn from the ground line, the two switches are not directly connected to the nearest ground, 2. The advantage is that when the lightning current flows through the grounding network, the lightning current flows only vertically. Even if there is a bad contact, it will not cause horizontal interference.
Grounding treatment of the switch: A 135mm2-inch copper core
wiring similar to "scattered grounding" is adopted, that is, both the working and protected ground wires are drawn from the ground wires. The two wires are not directly connected to each other. See figure 2, its advantage is that when the lightning current flows through the grounding network, the lightning current flows only vertically, and even if there is a bad contact, it will not cause horizontal interference. Grounding treatment of the switch: A 135mm2-inch copper core
protected ground wires are drawn from the ground wires. The two wires are not directly connected to each other. See figure 2, its advantage is that when the lightning current flows through the grounding network, the lightning current flows only vertically, and even if there is a bad contact, it will not cause horizontal interference. Grounding treatment of the switch: A 135mm2-inch copper core wire is used to separately connect to the grounding line.
cross-section of the wire groove left 40% of the surplus for expansion, Super 5-type twisted-pair cross section area of 0.3 square centimeters. Groove installation, should pay attention to the isolation of strong wire groove. Wiring system should avoid with strong electric line in no shielding, distance less than 20cm parallel walk more than 3 meters. If it can not be avoided, this section of the groove ne
accordance with the standards, and acceptance records should be made. construction teams that do not comply with the general wiring Construction Specifications often do not have acceptance records for electrical concealed projects.
The laying of pipelines follows the principle of "safety, convenience, economy, and objectivity. At the same time, for special power circuits, such as air conditioners, whole bathrooms, and electric showers, it is recommended that the user first check whether there i
Easy understanding of office strong and weak current Integrated Wiring Construction
Office decoration and office decoration office strong and weak current wiring construction can be divided into four categories: Fixed Point, slotted, wiring, sealing trough, etc.
1. determine the point
1. The basis for determining the position: According to the office space wiring design drawing, combined with the office work station, use a pencil, ruler or ink bucke
international synchronization, but in the 1990s s when the basic industry and technology were lagging behind, China's optical cable manufacturing technology was dominated by the introduction of technology, among them, the skeleton single-screw twisted cable mainly used by Houma cable factory first appeared, and then a central pipe structure emerged. The agricultural cable of the central bundle cable developed by Wuhan Institute of Posts and Telecommunications) it is still an important optical f
line.In order to embed the Arn, each rib plate should be evenly sawed Out Of The arn slot. It is best to make the arn bars just snap into the slot. When dividing a rib trough, the first rib line from the deck to the baseline of the bottom of the ship can be located at the first end (or tail end) of the hull shape chart side, and the widest rib line in the ship, each part is divided into several equal parts and connected separately. The intersection o
Cabling slot design in data centers
In the data center, all devices are interconnected through optical fiber cables or cables. Therefore, when you enter the data center, you will see various cables connected to different devices. How to wiring so many cables is a learning. The quality of wiring not only affects the appearance of appearance, but also involves troubleshooting, network adjustment, and daily inspection, good cabling can often save a lot of time. In addition to the Interconnection L
WiringMedium"Cabling,CableThe length of the remaining line in the distribution box must be the same, and the length should not be too long. It is best to group the remaining lines by grouping table, pull and tie them straight from the outlet of the cable trough, and the distance between the binding points is not greater than 50 cm. It should be noted that wire or hard power cord cannot be bound.
In the cabl
Internet cafe cabling is an important step before the internet cafe is decorated. Professional personnel are required to wiring the internet cafe. If there is a problem with the internet cafe cabling construction, in the future maintenance work, more cost is required. Next we will talk about the internet cafe cabling construction strategy.
1. In the early stage of decoration construction, the network cable and power supply wiring should be taken into account by using the ground
Tension evaluation: during the installation of the optical cable, the tension value of the optical cable cannot exceed the maximum allowable tension. This value depends on the definition of the optical cable manufacturer. When the optical cable is laid using a mechanical traction device, the tension value of the optical cable shall not be too large. During manual laying, you do not need to monitor the device. For the laying of Optical Cables with roundabout routes, you can use the reverse relea
double panel-the wires on both sides should not be parallel to each other; printed for circuit transmission and Output
The wires should avoid parallelism as much as possible, and it is best to add a ground wire to the PCB Resource Network-p c B resource source network between these wires.
4) printed wires are used as ground wires-copper foil is kept as much as possible as a public ground wire and arranged
bandwidth of 300 MHz and has the following features: Optional color labels for easy port identification; durable high-quality modular plug for anti-corrosion; the high-quality internal multi-strand line splitter can prolong service life and maintain the ideal line-to-balance; Innovative relief of pressure (360. Ring) not only relieves tension, but also does not lead to deformation of the line. The insertion jacket with buckle protection can play a protective role when the jumper passes through
Many users surf through self-built proxy servers, hubs, switches, routers, and other devices at home. Many terminals and network devices are required for most home computer networks. In addition, the network structure is simple and computer network wiring may be ignored. For Fans that use wireless networks, network wiring is not required. However, the wired network is flexible and secure for economic, compatibility, and transmission speed considerations. Next, let's talk about the home wiring ex
the cable pipe trough under the floor or decorative board, and the information socket should also be embedded, bury the bottom box in the wall.
3. Simple Design
Because the number of information points is small, it is very convenient to manage, so home wiring does not need to use distribution frames. One end of the twisted pair wires is connected to the information outlet, and the other end can be directly connected to the
outlet installation holes from the wiring room. The installer only needs to fix four pairs of cables to the wire pulling end of the information outlet, and draw the wire from the other end of the pipe to reach the wiring room.
2. Ceiling cabling
The most common method of horizontal wiring is wiring in the ceiling. The specific construction steps are as follows:
1) determine the cabling route.
2) Open the c
, hubs, and other manufacturers to purchase goods, and determines the date of delivery, different Specifications of the plastic trough board, PVC fireproof tube, snakeskin tube, self-tapping screws and other wiring materials in place, if the hub is a centralized power supply, prepare wires, iron pipes, and formulate safety measures for electrical appliances and equipment. The power supply lines must be carried out in accordance with the standards and
Well including information automation system CAS), office automation system OAS) line, current Weak Current pipe wells are mainly composed of optical fiber cables, telephone lines, fire-fighting lines, and broadcast and audio. Most of them are close to the strong electric well for lighting control and power control of power equipment.
The design of the Weak Current pipe well should be taken into account, and the layout of the weak electric pipe, wire
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