DIY portable video conference, sharing and teaching device

A DIY conference and teaching device @ mcuoneclipse.com: COVID-19 is by far not over, and in Switzerland the infection rate is going up again (2nd wave?). During the spring 2020 semester university lock-down we moved pretty much everything to a ‘distance learning’ setup. With that experience and with the request to prepare for the fall […]

App note: Charging capacitive loads with eFuse

App note from ON Semiconductors on how eFuse manage to cope up with large capacitive loads. Link here (PDF) The eFuse protection devices are used for limiting the system load current in the events of overload or short circuit. Many applications employ On Semiconductor eFuses at the power input stage of the system between the […]

App note: Tuning linear redrivers

App note from ON Semiconductors about linear redrivers setting. Linear redrivers are used in systems in order to improve high speed signal integrity in systems transmitting digital data. Link here (PDF) Linear redrivers are used in many applications that transmit data at high speeds. They can be found on computer motherboards, gaming consoles, graphics cards, […]

App note: Tutorial selecting the optimum voltage reference

App note from Maxim Integrated guiding you when selecting voltage references. Link here What could be more basic than a voltage reference – a simple, constant reference voltage? As with all design topics, there are tradeoffs. This article discusses the different types of voltage references, their key specifications, and the design tradeoffs, including accuracy, temperature-independence, […]

App note: Voltage Reference Application and Design Note

App note from Renesas on the basics of voltage reference. Link here (PDF) Conceptually, a voltage reference is a very simple device with only one purpose in its life. Quite simply, the purpose of a voltage reference is to generate an exact output voltage no matter what happens with respect to its operating voltage, load […]

App note: How to monitor state-of-charge in small batteries with tiny, ultra-low-power comparators

App note from Maxim Integrated about low current and voltage battery monitors. Link here Many of today’s portable consumer electronic devices are powered by small button or coin-cell batteries. Users, of course, expect long battery life and reliable charge-level information. However, it can be quite challenging to efficiently monitor the health and state-of-charge (SOC) of […]

App note: Effects of different resistor tolerances in a differential ADC for THD performance

App note from Maxim Integrated demonstrating the effects of different resistor tolerances on the analog front end of ADC’s performance. Link here This application note explains how the different tolerances of the same value resistors at the inputs can alter the THD performance of the fully differential ADC. The cost of resistors changes significantly with […]

App note: LV5980MC step-down switching regulator

Single chip high efficiency step-down converter, app note from ON Semiconductors. Link here (PDF) The LV5980MC is a fixed 370 kHz, high−output−current, Non−synchronous PWM converter that integrates a low−resistance, high−side MOSFET and a Customer Chosen, External Diode for the rectification. The LV5980MC utilizes externally compensated current mode control to provide good transient response, ease of […]

App note: Designing a PSR Quasi-Resonant adaptor driven by the NCP1362

ON Semiconductor’s app note featuring 12V 12W adaptor design using NCP1362 primary side regulation controller with valley lockout that hold its switching frequency at light loads. Link here (PDF) Quasi−square wave resonant converters also known as Quasi−Resonant (QR) converters are widely used in the adaptor market. They help designing flyback Switched−Mode Power Supply (SMPS) with […]

A new, fully modular CNC controller

bdring’s new universal CNC controller for Grbl_ESP32 , that is available on Github: The blog post details a new CNC controller I designed. I have probably designed 40-50 different controllers over the years, but this one has me really excited. My past controllers were generally application specific. My recent controllers have all been for the […]

The Hayes Chronograph, a remake for 2020

smbakeryt built his own Hayes Chronograph: I’ve always wanted a Hayes Chronograph, but have never been able to acquire one, so I finally broke down and just made my own. The Hayes Chronograph was a compliment to Hayes line of smart modems, and implemented a real time clock for computers that didn’t have a built-in […]

μSim: PICmicro instruction simulator

Dilshan has published a new build: μSim is a lightweight PIC™ CPU and ALU simulator. This simulator supports the PICmicro mid-range instruction set and designed to work on both PC and Arduino platforms. Compare with most of the other emulators, μSim does not provide all MCU features and peripherals. This simulator design as a minimalistic […]

App note: FT90X ethernet LED control

App note from FTDI/Bridgetek demonstrating LED control over Ethernet. Link here (PDF) In an increasingly connected world, more and more devices are going online. To enable online connectivity typically requires an MCU with Ethernet or Wi-Fi capabilities. To demonstrate the principle, this Application Note describes an implementation of a web server which allows for control […]