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Before asking the question I would like to attach the image of the BGR regarding which I have some doubts. From what I have read, due to the high gain of the op-amp, the two inputs of the op-amp "Va and Vb" are always at an equal potential such that the PTAT current flows across R1. But if the...
mhoulroyd
1 min read
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1K
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Small is a relative term. In the 1990's a small PC socket was a leaded device on 2,54mm pin centers, and miniature was a staggered 2,54mm grid. In the past 10 years, small was considered 2mm pitch and miniature was 1,27mm pitch. During my time as a product designer of small precision...
niciki
2 min read
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5K
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The background: I have found a way to debug a Keil's project using OpenOCD inside STM32CubeIDE. This approach assumes that the Keil built the project to the .elf file using fromelf.exe tool. The same method can be successfully used for debugging in any other capable environment, e.g. VSCode...
niciki
2 min read
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4K
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Assumptions: STM32CubeIDE needs to be installed. At the time of writing this guide, STM32CubeIDE version is 1.6.1 Build: 9958_20210326_1446 (UTC). OpenOCD and GDB server are already preinstalled in STM32CubeIDE, so no need to install separately; Keil's .uvprojx project needs to be built to .elf...
mhoulroyd
2 min read
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1K
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Introduction: Specifying the correct printed circuit board pad, land and, hole sizes are critical to the device mechanical attachment of a machined pin or socket. Through-hole PCB designs come in two flavors: plated and unplanted. A plated hole provides a path for solder wicking due to...
niciki
4 min read
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3K
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The background: I have to use Keil in my job and honestly - I don't like it much. The debug is great, but the editor is lacking in many features compared to other IDEs. I was trying to find a working extension to STM32CubeIDE to integrate Keil's toolchain (build/rebuild/clean) and parse all...
niciki
1 min read
Views
2K
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The background: I have to use Keil in my job and honestly - I don't like it much. The debug is great, but the editor is lacking in many features compared to other IDEs. The main purpose of this blog entry is to make STM32CubeIDE project from Keil's project source files. The solution: I assume...
niciki
2 min read
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1K
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The background: Standards in general are useful as far as they are not overwhelming. In this blog entry I would like to present my embedded project structure. I keep it for every new project for easier navigation throughout project's domains and to speed up project creation. My embedded project...
niciki
2 min read
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2K
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The background: In this blog entry I have shown one way to get a "minimal" Eclipse version. Here I will point to useful plugins and additions. How to add the Marketplace? NOTE: The Marketplace is a place where you can add different plugins to the Eclipse. Go to Help->Install New Software...
niciki
3 min read
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1K
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The background: The example solution is focused on the I2C interface. The walk-through is similar for every single interface. Adding entry to the board.xml file Add in <interfaces> section: <interface mode="master" name="iic_main" type="xilinx.com:interface:iic_rtl:1.0"...
niciki
1 min read
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1K
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Eclipse installation: Go to download.eclipse.org/eclipse/downloads/ Find the Latest Release section and click on Build Name (e.g. 4.17): Scroll down the page and find the Platform Runtime Binary section and click on the appropriate version for your OS: Download it and install. Eclipse needs...
mhoulroyd
3 min read
Views
841
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Introduction: For round pins with precision critical diameters, multiple barrel diameter variations, and drilled holes, CNC machining is the ticket. For the other one-billion-part applications, metal forming, and fabrication processes offer the best solutions. Consider the following...
mhoulroyd
2 min read
5.00 star(s) 1 ratings
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2K
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Introduction: One of the most overlooked, least thought-out components assembled to a PCB is the pin terminal. Although they’re not exciting like logic devices, they can present complications to those who disregard their correct application. Consider the profit loss of fully populated PCBs...
mhoulroyd
2 min read
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1K
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Introduction: Reducing height and space is always a goal in new product design. Reducing module space translates into cost savings. For rackmount assemblies, space is limited between printed circuit boards. Low-profile carriers eliminate permanent onboard insulators minimizing socket...
mhoulroyd
2 min read
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2K
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Hand assembly and soldering of individual pin arrays to a PCB is inefficient, costly, and results in poor product quality. Yet, some manufacturers are still doing this. One old-school production soldering method employed for thru-hole PCB assemblies is called wave-soldering. To accomplish...
mhoulroyd
4 min read
Views
935
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Introduction: Which quagmire have you experienced lately? Case 1: Your production assembly schedule goes off the rails due to QA finding random misaligned surface mount connectors due to migration during reflow. Case 2: You’re taking returns due to field failures; fatigued surface mount...
mhoulroyd
4 min read
Views
818
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Introduction: Manually placing fields of discrete pins upon a printed circuit board is a poor production PCB assembly strategy. This action is not only tedious and prone to errors but extremely cost-ineffective too. Vertically unstable pins tilt, creating harmful soldering rework. Misaligned...
Have you ever had this experience? After placing a purchase order, the supplier discovers they cannot manufacture the promised part. Because you did not plan properly, you have no choice but to buy an expensive, unproven custom product. With no prior reference history, you are the...
niciki
3 min read
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11K
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1
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2
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The background: I have to use Keil in my job and honestly - I don't like it much. The debug is great, but the editor is lacking in many features compared to other IDEs. I was trying to find a working extension to VSCode to integrate Keil's toolchain (build/rebuild/clean) and parse all...
mhoulroyd
2 min read
Views
11K
Reaction score
1
Comments
1
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Back in the early 1990's, I accompanied our chief engineer to visit Intel. My company had just designed a new high-density pin grid array socket for Intel's new Pentium family. The Intel engineers loved our product and used it in their laboratories for testing. But later during that visit...
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mhoulroyd
3 min read
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4K
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Spring-loaded pins are rapidly finding new applications in modular product design. Also referred to as SLCs (spring-loaded connectors), this product resolves many of the manufacturing issues like misalignment, coplanarity, and tolerance stack up that can plague traditional pins and sockets...
mhoulroyd
1 min read
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1K
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It's been 4 years since I last posted on the EDAboard. There have been so many changes in the electronics industry. Spring pins are still one of the fastest growing forms of interconnecting two PCBs. The advantages for a designer to use spring pins are numerous: 1) The ability to blind mate two...
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andre_luis
1 min read
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4K
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Find bellow an Android TCP client extension that implements a very simple socket; note that its operation is performed 'one-shot', which means that only one command is sent ( and its respective response, read ) at a time, and then the socket connection is closed. So, be aware that it is not a...
andre_luis
2 min read
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1K
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The following attached file contains a ThingSpeak client extension that allows one to easily make use of the Read and Write features of the ThingSpeak cloud service provided by MathWorks in such a manner that programmer is able to transparently make use of the service without having to deal...
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andre_luis
2 min read
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4K
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The following attached file contains an SSH Client extension which I made for my own use, but it may also be useful for users of the MIT Application Inventor 2 (AI2) community, or even to the AppyBuilder community (code intrinsically compatible for the last one, but not tested). This is just the...
Note: In earlier versions of the 802.11 standard, the (BCC) OFDM example was given in Annex G. However, an error existed (e.g. in IEEE Std 802.11-2007) in that the FCS was incorrect (see link or search online for "IEEE 802.11-09/0042r0"). The WiFi (802.11) standards documents are free to...
andre_luis
1 min read
Views
859
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The following function may be useful for those who are starting in the microcontroller's world and wish to implement applications using 7-segment display with the CCS compiler in PIC platform. I've used long time ago: void Display7seg ( char value ) { char pin=0 ; while ( pin< 8 )...
stechiez
1 min read
Views
895
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Hi, This project is to build cyclic on-off programmable timer. In this project user can set ON timer and Off time using keys and 7 segment display. Relay is provided as output, where relay will be remained ON for ON time and it will goes OFF after ON time overs. And Relay will remain Off till...
bassa
1 min read
Views
910
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"What programming language skills do employers want? Online job-search firm Indeed took a look at three months (18 May to 18 August) of 2018 job listings in its tech software category to find out. The company ranked programming languages according to the percentage of job postings within the...
bassa
1 min read
Views
786
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Moore’s Law is over, ushering in a golden age for computer architecture, says RISC pioneer David Patterson—University of California professor, Google engineer, and RISC pioneer—says there’s no better time than now to be a computer architect. Some highlights "As an example on the...
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xpress_embedo
Updated
2 min read
Views
40K
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1
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In this blog post i will share the OLED libraries with you, which are written for mikroC compiler and can be used with any other C compiler. Following are the functions which are currently present. void OLED_Init( void ); uint8_t OLED_Width( void ); uint8_t OLED_Height( void ); void...
khaled2k
2 min read
Views
906
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Hello readers, I am writing for my very first post in my very first blog. I would like to share with you some of the bad habits that I used to do at work and fortunately I have changed them into good habits. I would first quote something my brother heard in a finance course a while ago. "A...
Electrical Ground is the reference point in circuits from which voltages are measured. Using the symbol of ground we can make our circuits looks simpler. Three types of electrical grounds are: Simple ground Digital Ground Chassis ground Earth ground Simple ground This type serves as...
EastbayA
Updated
2 min read
Views
23K
Comments
1
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By Lee Teschler, Exeutive Editor EEWorldonline.com Ground-fault circuit interrupters (GFCIs) are sometimes also called earth leakage or residual-current circuit breakers. They can sense leakage current to earth ground and interrupt the circuit automatically when leakage current exceeds a...
EastbayA
4 min read
Views
793
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By Chris Francis (originally appeared on EEWorldonline) I don't mean the transistor radio or mobile phone, but electronic devices and circuits that have been significant and enduring. Some are not necessarily "inventions", depending on how you define an invention, but significant designs...

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