Capacitor self-diagnostics
Peter Demchenko discuss about a design idea on how to test capacitors in circuit. The electrolytic capacitor is far from being the most reliable electronic component. One of its failure modes – a gradual loss of capacity – can hardly be noticed until power supply malfunction...
Continue ReadingSingle-chip USB-C buck-boost battery charger
Intersil's ISL9238 and ISL9238A add 5V-20V reverse boost for USB On-The-Go charging of portables such as smartphones and headphones; two USB-C buck-boost battery chargers support bidirectional power delivery in ultrabooks, tablets, power banks and other mobile products. by Graham...
Continue ReadingProgramming ESP8266 With Arduino IDE : The Easy Way
The ESP8266 WiFi Module is a self-contained SOC that can give any microcontroller access to your WiFi network. It's an extremely cost-effective board with a huge and ever-growing community. Each ESP8266 module comes pre-programmed with an AT command set firmware. This module has a...
Continue ReadingDIY Spectrum Analyser
Alan X has been working on a spectrum analyser project that can show the spectrum visually! He started working with ATTiny85 and kept on updating the project over time. Alan X used Goertzel's algorithm with a Hamming window, this algorithm can be used to detect a frequency from...
Continue ReadingFrom Sand to Circuits – How Intel makes integrated circuits [PDF]
Here is a nice PDF document from Intel explaining how integrated circuits are made. From Sand to Circuits - How Intel makes integrated circuits [PDF] -...
Continue ReadingWorld’s first broadband infrared LED by Osram
Designed for everyday food analytics, the SFH 4735 LED emits broadband infrared light in a wavelength range from 650 to 1,050 nanometers. by Julien Happich @ edn-europe.com The component is well suited as a light source for near-infrared spectroscopy, for example to assess the...
Continue ReadingTemperature Measurement with NTC Thermistors
Philip Kane @ jameco.com discuss about how to measure temperature with NTC thermistors. He writes: Thermistors (thermal resistors) are temperature dependent variable resistors. There are two types of thermistors, Positive Temperature Coefficient (PTC) and Negative Temperature...
Continue ReadingA LEGO-Compatible Digital Weather Billboard
Internet of LEGO “IoL” is an interactive LEGO city built and designed by Cory Guynn, a cloud computing and IoT enthusiast. This project combines computer and electronics engineering with our favorite childhood toy, LEGO! Through the IoL blog, Cory shares a collection of circuit...
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