Project Name: Modbus Remote I/O Board – Based on STM32F103C8T6 – V1.0 Project Author: NeoMR Introduction To consolidate newly learned embedded knowledge, a handsome guy crafted a industrial control Modbus remote I/O board! This project is fully open source and relatively simple! It is meant for sharing and learning together! This project can be used … Read more
1 [PCB Information Network] Just after the festive New Year, news broke of a strike by workers at the Escondida copper mine in Chile, the largest copper mine in the world, and the disruption of exports from the Grasberg mine, the second largest copper mine located in Indonesia. It is estimated that the 20-day shutdown … Read more
Tombstone defects on PCBs, also known as the Manhattan Bridge or bridge effect, are a type of assembly defect for surface-mounted (passive) components. This defect occurs due to inconsistent melting times of solder paste at both ends of the component, leading to uneven stress on the component. Given that these components are relatively light, they … Read more
Test Coupon: Commonly known as Impedance Strip The Test Coupon is used to measure the characteristic impedance of the produced PCB using a TDR (Time Domain Reflectometer). The impedances that need to be controlled generally include single-ended lines and differential pairs, so the trace width and spacing (when differential pairs are present) on the test … Read more
This video showcases the PCB production process in its entirety. It is recommended to watch it while connected to Wi-Fi: PCB, also known as a printed circuit board, is the “mother of electronic products.” It serves as the support structure for electronic components and provides electrical connections between them. PCB circuit boards are categorized into … Read more
In natural convection heat dissipation products, the size of vias on the PCB has a significant impact on heat dissipation. However, the exact extent of this impact is still unknown. We will start with a simple product analysis, focusing on the via parameters of a single chip, to study how changes in via parameters affect … Read more
PCB Process Design Specifications Author: Powermyworkroom Published on: 2004-7-9 (The time is a bit early, but the content is classic)
[PCB Information Network] News: Factory owners are crying out in despair, and this year seems particularly tough. Some have described the current state of small and medium-sized manufacturing factories as follows: “ Worrying about orders when there are none; Worrying about payments when there are orders; Long-time partners have fewer orders; New clients are hesitant … Read more
I have a demo board with an integrated MOSFET Buck power supply. Although the circuit is simple, the layout is quite textbook-like. Here are some key design points of this circuit: 1. Phase Plane The phase plane, which is the plane connecting the inductor and the power IC, is the dirtiest signal (high current, high … Read more
Nowadays, the rapid prototyping of PCBs is incredibly convenient. By placing orders through online platforms, you can receive PCB samples without having to interact with factory personnel. However, if you are not familiar with the PCB production process, some quality issues caused by your own design may lead to misunderstandings during communication with the factory’s … Read more