by Clemens Valens @ elektormagazine.com discuss about a new type of dissolvable memory resistor using egg proteins.
Over the past years research has been done with several biodegradable materials, including DNA, to make what is called transient electronics, dissolvable electronic components that are designed to be compatible with the environment. The Chinese scientists used egg proteins, magnesium and tungsten to build a dissolvable memory resistor or memristor, a special kind of resistor that can “remember” charges.
The Tiny Step-Down DC-DC converter project provides 5V 500mA output from supply input up to 25V DC. MC34063A IC is heart of the project from on semiconductor. The MC33063A is a monolithic control circuit containing the primary functions required for DC-DC converters, This device consist of an internal temperature compensated reference, comparator, controlled duty cycle oscillator with an active current limit circuit, driver and high current output switch. This IC specially designed to be incorporated step-down, step-up, and voltage-inverting applications with minimum number of external components.
This tiny Step-Down DC-DC converter project provides 5V @ 500mA output from supply input up to 25V DC. MC34063A IC is the heart of the project from ON semiconductor. The MC33063A is a monolithic control circuit containing the primary functions required for DC-DC converters, This device consist of an internal temperature compensated reference, comparator, controlled duty cycle oscillator with an active current limit circuit, driver and high current output switch. This IC is specially designed to be incorporated step-down, step-up, and voltage-inverting applications with minimum number of external components.
Note : Before you connect the converter to a load, connect a digital mutlimeter at output and adjust the onboard preset potentiometer to obtain 5V DC
GreatScottLab @ instructables.com build a step up dc-dc converter with the help of ATtiny85 microcontroller.
In this project I will show you an efficient and common way how to step up DC voltages. I will also demonstrate how easy it can be to build a boost converter with the help of an ATtiny85. Let’s get started!
educ8s.tv uploaded a new video comparing the performance of ESP8266 Arduino board with the most popular Arduino boards.
In this video we are going to compare the computational speed of the WeMOS D1 ESP8266 based Arduino compatible board with the computational speed of the most popular Arduino boards and the Teensy 3.2. Let’s get started!
A few weeks ago, in a similar video we compared the performance of the Teensy with the most popular Arduino boards. Today, we are going to add another board to the comparison, the WeMOS D1 ESP8266 Arduino compatible board. I have prepared a detailed tutorial on that board so you can check it out before we start.
In order to compare the processing power of the boards, all the boards, the Arduino Uno, the Arduino Due, a Teensy 3.2 and the WeMOS D1 will run the same sketch. The Newton’s approximation of PI for half a million iterations. The time needed to execute this task is then displayed on a 1.8” Color TFT display. This way we are going to have a visual representation of the speed differences of the boards. In order to see how to connect the display with the Teensy or the Arduino boards check out the tutorial I have prepared on that. You can find links for all the parts in the description of the video.
WeMOS D1 ESP8266 vs Arduino Uno, Arduino Due and Teensy 3.2. Which one is the fastest board? – [Link]
Jacob Beningo @ edn.com discuss how you can benefit from the Arduino platform if you are a professional.
Despite its popularity among hobbyists and electronics enthusiasts, the Arduino has become infamous among professional embedded systems developers. I must admit that for the longest time I also viewed the Arduino as so simple it was nearly useless for professional developers. But I have changed my mind
Prototype to production: Arduino for the professional – [Link]
The wearable and personal-electronics industries are booming. Devices in this market vary wildly by application and use. These multifunction devices are designed to help people in their daily activities and make their lives comfortable. They can be found in different shapes, colors, sizes, and safety measures. They may differ significantly from each other, but they all have one thing in common—the need for a battery and a battery charger. These portable devices are typically powered by batteries installed internal to the device, which must be charged efficiently and quickly on a regular basis. The user’s charging experience also needs to meet the requirement of safety, comfort, and convenience.
Battery-charging considerations for low-power applications [PDF] – [Link]
Here is a 5 LED electronic candle using PIC12F508 able to power each LED with 20mA max. This candle produces a great effect and can be used either as a candle or inside a pumpkin.
login
![Battery-charging considerations for low-power applications [PDF]](https://www.electronics-lab.com/wp-content/uploads/2016/05/battery_charging-503x270.png)
