Noriaki Mitsunaga has build an Arduino Oscilloscope using minimum parts. He writes: I have created a simple Arduino Oscilloscope as above picture shows. Here is its summary. You can build your own! Arduino Oscilloscope -...

Zak's Electronics Blog published a new library and breakout board for MCP2221 USB to UART interface IC: This is a library for interfacing with the HID features of the MCP2221 USB to UART and I2C/SMBus serial converter from Microchip. The converter includes 4 GPIO pins, 3x 10-bit...

by guibom @ github.com: Basic ESP8266 + Attiny85 + DHT22 Temperature and Humidity logger. I've made this to experiment a bit with the ESP8266 wifi module, and hopefully make a remote sensor that posts the data to my server. I wrote the code to work with both an atmega328 and a...

The latest extruded aluminium enclosure from Hammond production - 1455 NHD is suitable even for devices requiring more intensive cooling. The latest addition to the family of the popular 1455 enclosure series is the enclosure with “NHD” suffix – where “HD” marks “Heat...

An application note from NXP on how to calculate the power dissipated by the triac: This Application Note describes how to calculate the power dissipation for triacs and Silicon Controlled Rectifiers. Thermal calculations are also included to help the circuit designer to predict the...

by samsungite @ instructables.com: I think that one day, all food cupboards & fridges/freezers will be smart. All products will have an RFID or video recognizable label which will update a list of product usage. Your local supermarket will gather this information & replenish...

by Victor8o5 @ instructables.com: This high voltage power supply has been designed to output a fixed voltage of around 50kV, it could easily be converted to an adjustable supply by connecting a variac in case of using transformers or by adding some extra circuitry to regulate the...

In this tutorial, you'll learn how to burn Arduino bootloader on a new ATmega328 using USBasp ISP programmer. Every Arduino Uno Board comes with a microcontroller called the Atemga328P, and they are already pre-program with Arduino Bootloader firmware. Therefore, there is no need to burn...