Board for building robots --------3DoT Board

As an hardware focused Group, Humans for Robots develops a new expansion dock for the 3DoT Board. The 3DoT Board is the brain, power, and controller of any robot - all on a 35 x 70 mm PCB, It can get your robots up and running. You can control your robot from a computer anywhere in the world in community mode by utilizing the phone’s cameras and Bluetooth connection to the 3DoT Board. To go further, you can program the board using the popular Arduino IDE using the 3DoT Arduino library to help yo...

microcontroller hardware Open source Arduino Bluetooth community mode robots 3DoT Board

PCB Design - Eight PCB Marks You May See And Never know What They Are Before

If you’re an electronics hobbyist and you hold a new PCB with your bare hands, usually you will spend several minuets staring at it. You want to capture all the art behind it and to see if there is any new technique should be adapted in your next PCB design, but sometimes you can find some marks, and can’t figure out their functionality. In this micro blog I will introduce 8 common PCB marks like these.Eight Common PCB Marks:From Right to Left: Stamp Holes – Types of Holes- Solder Thief pad – Fi...

Slots Fiducial Marks Solder Thief Pad Types of Holes Stamp Holes PCB Marks PCB Design

How to avoid the negative effects of vias in high-speed PCB design

The basic concept of viasVia is an important part of multilayer PCB. The cost of drilling usually accounts for 30% to 40% of the cost of PCB. Simply put, each hole on the PCB can be called via. From a functional point of view, vias can be divided into two categories: one is used as an electrical connection between layers, the other is used for fixing or positioning devices. In terms of technology process, these vias are generally divided into three categories, namely blind vias, buried vias, and...

High Speed PCB Through Hole Buried Via Blind Vias

Controlling EMI Radiation with PCB Layered Stack-up

There are many ways to solve EMI problems. Modern EMI suppression methods include: using EMI suppression coatings, selecting appropriate EMI suppression parts, and EMI simulation design. This article starts with the most basic PCB layout, discusses the role and design skills of PCB layered stack-up in controlling EMI radiation.Electricity BusbarReasonably placing a capacitor of appropriate capacity near the power supply pin of the IC can make the output voltage of the IC jump faster. However, th...

Electricity Busbar PCB layout EMI Radiation,Stack-up

How to Ensure PCB Design Signal Integrity?

Signal integrity (SI) refers to the quality of the signal on the signal line, that is, the ability of the signal to respond with the correct timing and voltage in the circuit. If the signal in the circuit can reach the receiver with the required timing, duration and voltage amplitude, then it can be determined that the circuit has better signal integrity. Conversely, when the signal does not respond properly, a signal integrity problem occurs.With the use of high-speed devices and more and more ...

Crosstalk, Stack-up Signal Integrity

Stack-up Design in PCB

In general, PCB stack-up design mainly follows two rules:1. Each trace layer must have an adjacent reference layer (power or ground layer);2. Maintain a minimum distance between the adjacent main power layer and the ground layer to provide a large coupling capacitance; The following is an example to explain the stack-up from two-layer board to eight-layer board:I. Stack-up of single-sided PCB boards and double-sided PCB boardsFor two-layer boards, the problem of lamination is no longer due to th...

Stack-up EMI

7 Tips in Designing PCB

1. Flexible application of via designFor high-voltage, high-current, high-power, and high-heat components, the layout of components should be as loose as possible when designing printed boards. The size of the component pads and the pad spacing of each solder pin can also be designed bigger. If the number of circuit components and the size of the printed board allow, you can also design some vias in the space between the pads of the components and the copper foil of the printed board according t...

copper foil component PCB

How to achieve PCB automatic routing efficiently?

1. Determine the number of layers of the PCBBoard size and the number of routing layers need to be determined early in the design process. If the design requires the use of high-density ball grid array (BGA) components, the minimum number of routing layers required for routing these devices must be considered. The number of routing layers and the stack-up method directly affect the routing and impedance of the printed routing. The size of the board helps determine the stacking and line width to ...

DFM BGA Automatic Routing

Key points of seven commonly used interface types in circuit design

We know that there may be some problems in the data exchange of each sub-module of the circuit system so that the signal can not be normally and circulated in high quality. For example, sometimes the working sequence of the circuit sub-modules is deviated (such as CPU and peripherals) or The respective signal types are inconsistent (such as the sensor detects the optical signal), etc., then we should consider the corresponding interface to deal with this problem well. The following is a descript...

PCB Design interface

How to place the inductance of the switching power supply on the PCB design?

This article will explain how to place the inductance of the switching power supply on the PCB design. First, let's look at this question: Where should the coil be placed?Switching regulators for voltage conversion use inductors to temporarily store energy. These inductors are typically very large in size and must be placed in the printed circuit board (PCB) layout of the switching regulator. This task is not difficult, because the current through the inductor may change, but not instantaneously...

Buck Conversion Switching regulators

PCB layout tips of DC/DC buck converter

The circuit layout is as important as design when implementing a DC-DC buck converter. Poor layout can seriously reduce the design effect. Now let PCBWay introduce some of the best layout practices.Good goals of circuit layout 1.Control radiation and induced noise2.Reduce interference between different parts of the circuit3.Reduce circuit area4.Effective thermal management5.Improved voltage regulation and circuit efficiency6.Avoid additional "band-aid" circuits such as buffers7.Increase stabilit...


Anti-interference Technology in PCB Design

Introduction:With the development of the society and the progress of science and technology, electronic products are on the increase, the kinds of content is becoming more and more complex, the structure of electronic products and equipment has also been gradually optimized, PCB design also gradually show the characteristics of multi-level and high density, PCB design in all aspects of the interference problem also gradually attention and arouse people's gaze. The EMC (electromagnetic compat...

Some Points of PCB Design (1)

Introduction:Electronic products fill our work and life. The reasonable design of printed circuit board will directly affect the efficiency of electronic products. Whether the design of grounding, the electromagnetic compatibility, size of PCB board and the heat dissipation can meet the requirements of production and use is the focus of PCB design.The Key Points of PCB Design:Whether PCB design has good manufacturability is an important standard to measure PCB design. If you want to do this well...

PI and PDN in High-Speed and High-Density PCBs

Introduction:One of the signs of the development of digital IC technology is that the feature size of transistors becomes smaller and smaller. With the continuous progress of very deep submicrometer technology, the integration degree of digital IC is getting higher and higher, the speed is getting faster and faster, the power consumption is getting larger and larger, and the core power supply voltage is getting lower and lower. This trend will continue for quite some time.PI (Power Integrity) an...

Design of Rectangular Sheet Type Component Solder Pad

Abstract:Thought the design software has been very advanced and convenient, and has been improving fast, it can’t satisfy all the designer, especially no solder pad library responding to all kinds of SMC or SMD. So analyze the influences of PCB solder pad on the reliability of PCA, and according to the relative quality requirements, give some simple design methods.Solder Pad Design:1. Rectangular Sheet Type Component Solder Pad:The inspection of welding quality of rectangular components, whet...

PCB Layout and The requirements of The Drawing of Pads

Introduction:In SMT production process, the layout of PCB and the pattern of component solder pad are very important to production efficiency and product quality. Through long-term practice, it is found that good layout and welding panel graphics can greatly improve production efficiency and product quality. Principles of Component Arrangement:The component arrangement at design time should conform to and follow the following principles.a) Principle of uniform heat distribution of welding. ...

PCB Layout PCB Design

The Purpose of PCB Design

Introduction:The purpose of any design is to be able to manufacture successfully and effectively. The design is ineffective if it is divorced from the purpose. PCB design is also for better achieve and improve the speed, cost and quality of manufacturing.1. Design of Edge span style="color:#333333;background:white">Positioning Hole:In order to realize production, PCB panel design and layout must be done well. The edges, on both sides of the PCB board, must be not reserved less than 5 mm, and ...

PCB Design

High Frequency PCB Layout Techniques

Introduction:The components are developing towards high speed, low consumption, small volume and high anti-interference. PCB design is an important stage of electronic product design. It can realize the connection and function between electronic components, and is also an important part of power circuit design. High frequency circuit has the higher integration and the higher layout density, so it is very vital how to make layout more reasonable and more scientific.PCB can realize the connection ...

How to Design a PCB Panel for Less Money?

Introduction:PCB panel is a combination of several PCB unit boards with various possible connection modes, as shown in the figures below.Typical, when a hardware designer a PCB, he considers the electrical signal and the layout of the components on the circuit board, focusing on the function of the product. Less consideration is given to PCB manufacturing and assembly. To make PCB production smooth, especially for SMT assembly, special attention should be paid to PCB assembly design.I. Pur...


Problems Encountered in PCB Design and Their Solutions

Brief Introduction:The improvement of hardware of electronic products often takes a long time, and the major problem is often the focus of solution. But it's the small, trivial issues that ultimately get in our way. This article is aimed at PCB board design, production and some problems encountered in maintenance, such as the voltage resistance of diode, electromagnetic interference, the shedding of welding pads and the replacement of vulnerable parts, etc. Under the principle of minimizing ...

PCB Design rectifier diode 1. Voltage - resistant protection electromagnetic interference pads

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