pcb wizard

Three-day reboot of wayos hardware version 1.1 correction version fixed on the basis of the first version 1. Low-Level drive to avoid sending reset signals during power-on, leading to unstable USB voltage power supply during secondary calls on some boards 2. added the power-on function to solve the problem that some old motherboard does not support power-on. This function is optional. 3. added the ISP download function, which can be downloaded as long as there is a TTL line. Original device

Pay attention to the following basic items for the current loop: 1. If you use strip, try to bold it. If the Grounding Connection on the PCB is to be considered, the design should be as rough as possible. This is a good rule of thumb, but you must know that the minimum width of the ground wire is the valid width from this point to the end. Here the "end" refers to the farthest point from the power connection end. 2. Ground loop should be avoided

I. Comprehensive vocabulary1. Printed Circuit: Printed Circuit2. Printed line: Printed Wiring3. Printed Board: Printed Board4. Printed Board circuit: Printed Circuit Board (PCB)5. Printed Circuit Board: Printed Wiring Board (PWB)6. Printed component: printed component7. Printed contact: printed contact8. Printed Board Assembly: Printed Board Assembly9. Board: Board10. Single-sided printed board: Single-sided printed board (SSB)11. Dual-sided printed b

Prior to designing the board, I had only heard the relevant concepts, but did not really study si related knowledge. Organize some of the previously seen information as follows:(1) Signal Integrity analysisFactors related to SI : reflection, crosstalk, radiation. the reflection is caused by impedance mismatch on the transmission path; Crosstalk is caused by line spacing, and radiation is related to the high-speed device itself and the PCB design.Trans

TAB: Adjust PropertiesPgUp: Zoom InPgDn: ShrinkingDelete: RemoveCTRL + C: CopyCtrl + V: PasteCtrl+x: ClippingCTRL + Z: UndoCtrl+y: Cancel UndoCtrl+f: FindCtrl+h: Find and replaceSpace: Component Counterclockwise rotation 90°X: Swap the components aroundY: The components are swapped up and downV->f: Suitable for all components displayE->d: Remove Selected ComponentsE->s->a: Select all the ComponentsE->e->a: Cancel All Selected ComponentsSch Edit Shortcut keysP->w: Placing linesP->P: Placing Compo

Tags: color number font with ROM class implementation int ordinalThis is a very interesting SQL data processing application, the specific requirements are as followsERP needs engineering to combine the coding of the adjacent code with the sum of the BOM amount, cleverly used in the existing sorting number and the group sort number between the solution of the differenceExample:Original data:Required Conversions:Actual post-conversion data:SQL code implementation: withTab1 as(Select 1 as [Rank],1

Tags: PNG rom 9.png and technology weight ASE Col caseI. Original data: select inman,indate from [ fp_db ] . [ dbo ] . [ ppezhpbb where indate > " 2016-5-1 " and indate 2016-6-1 " ORDER by indate Two. After conversion: SELECT CONVERT(varchar( -), Indate, at) Indate,sum( Case whenInman='Lo Dingpeng' Then 1 Else 0 End) Lo Dingpeng,sum( Case whenInman='Wangbo' Then 1 Else 0 End) Wangbo,sum( Case whenInman='Liao Guan Long' Then 1 Else 0 End) Liao Guan Long,sum( Case

thread_struct thread is saved to the task_struct of the stop process; File system Information struct fs_struct *fs; Open file information struct files_struct *files; Signal processing function spinlock_t Sigmask_lock; struct Signal_struct *sig; Signal processing function sigset_t blocked; A signal that the process is currently blocking, with each signal corresponding to a struct sigpending pending; Whether the process is pending signal unsigned long sas_ss_sp; size_t Sas_ss_size; Int (*no

Fritzing is a set of software designed for PrintedCircuitBoard printed circuit boards. It is a tool especially intended for designers, artists, researchers, and amateurs. Like Processing and Arduino, Fritzing developers design this software in the spirit of openness, simplicity, and sharing. Fritzing is a simple and easy-to-use software operation interface, this allows users to easily design PCB printed circuit boards without the background of an elec

Always wanted to make a minimum system, this time finally put the idea into reality. Schematic diagram is as follows:The PCB diagram is as follows:After a few days, the board finally mailed to, is the following bear-like.Welding the voltage regulator circuit, found that the voltage regulator circuit schematic part of the wrong, no grounding, and then fly the root line, the regulator circuit is stable and easy to use.Welding Stm32 chip, where VCC and g

PCB Inspection MattersCheck that the device is all finished,Check that the cables are all finished,Check dangling Line,via,See if the copper skin is isolated and has no network copper skin,Check the DRC,1. Select the menu display-status to see if the marker is at 0%2. Execute Tool-quick report-unplaced Component report.3. Execute Tool-quick report-design Rules Check.Creating a drill Table1. Select Menu Manufacture-nc-drill Legend2. With the default se

Glass-based panels can be used at temperatures up to 150 ℃ to 250 ℃. The optional media materials are: FR4, dielectric constant ε0 of 4.6 Epoxy material, dielectric constant ε0 is 3.9; Polyimide, dielectric constant ε0 is 4.5. In addition, PTFE-based materials have the lowest dielectric constant and operate at temperatures up to 300 ℃, where PTFE, dielectric constant ε0=2.1; thermally solid PTFE, dielectric constant ε0=2.8; Glass-fiber PTFE, dielectric constant ε0=2.4;

Note: The post posted by the author on www.21ic.com is now reproduced. Http://bbs.21ic.com/icview-343175-1-1.html part 1/3. When editing a blog post, the typographical conflicts with the web page have been changed several times. I don't know if it is a problem with sogou browser. Once the pictures on bbs.21ic. com are referenced, the layout of the blog is disordered. If you know the situation, tell me the reason. Thank you. First PCB: Bytes ----

relationship with the specific resistance value, but the package size is related to the power. Generally, the package size is 0201 W. 0402 1/16 million 0603 1/10 million 0805 1/8 million 1206 1/4 million The relationship between the shape size and encapsulation of the capacitor resistance is as follows: 0402 = 1.0x0.50603 = 1.6x0.8 0805 = 2.0x1.2 1206 = 3.2x1.6 1210 = 3.2x2.5 1812 = 4.5x3.2 2225 = 5.6x6.5 2. Common shortcut keys: Q -- switch between the display unit mil and mm P -

Recently, after drawing a four-rotor PCB, I want to print it on A4 paper to see if the device is properly placed. Because my computer is not connected to the print sister, I can't print it directly, the intelligent PDF file of AD is used to print the Board files in pdf format. The result is that the printed board is enlarged and the original proportion is lost. In this way, the meaning of printing is lost. Later, I found a convenient method, in AD fil

is a data structure to manage the process settings. Is the only sign that the system-aware process exists.Typically contains information such as the following:(1) Process identifier (unique)(2) Process current state, usually the same state of the process will be placed in the same queue;(3) Procedure and data address of the process(4) List of process resources. Lists the resource records owned by other than the CPU.(5) Process priority. Degree of urgency of the reaction process(6) CPU field prot

post. Add the package , in the schematic, in the DSN file right-click, select Editor Object property, check the PCB footprint This column is not the package of each device has been filled in, and is not corresponding to the schematic diagram. If that's the case, it's a big part of the success. The final check checks, you can generate network tables ,DSN files, Tools---Create netlist, generate the device package and schematic one by one corresponding

Tags: cal err miss str picture. dll Net PNG comPCB cycle calculations Use SQL functions to invoke. NET DLL implementations (for code reuse purposes) Played SQL Server database often write stored procedures, functions and so on, when the business logic is too complex, write with SQL is a nightmare, Here the PCB cycle function is written in. NET, using MS SQL to call. NET basic steps to sort out the following 1th step: SQL Server CLR configuration (all

This series of articles by Net_assassin finishing, reproduced please indicate the source. http://blog.csdn.net/net_assassin/article/category/1100363 Author: Net_assassin e-mail: net_assassin@hotmail.com look forward to interacting with like-minded friends ID3DXSprite objects are a great surprise to programmers who plan to use Direct3D to write 2D games. The advantage of this is that the full 3D renderer is ready to serve you at the same time as the previous implementation (DirectDraw) a

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