Today we will take a look at using a rotary encoder with Arduino and displaying rotation data on the Nokia 5110 LCD display. A rotary encoder is an Electro-mechanical device that converts angular position or the rotation of a shaft into analog or digital values. By turning the shaft to...

xaVNA is a simple and cheap vector network analyzer that allows you to easily tune up antennas, filters, and amplifiers by plugin it to USB. It is able to display smith charts/graphs on the including PC software. The main board connects to a PC through usb and communicates via a...

Boris Landoni @ open-electronics.org designed COLIBRI, a board able to drive 4 color LEDs. He writes: Recently some multicoloured power LEDs have appeared on the market and, differently from the more common RGB LEDs, they incorporate a white LED, as an addition: they are named RGBW...

This article is the first of a series detailing the design and build process of an Arduino controlled Dual Mono AK4490 DAC by DimDim: The design goal was to do a dual mono design so as to maximize SNR and channel separation. A 4-layer PCB design was chosen so as to have a very solid,...

Sasa Karanovic @ sasakaranovic.com build a heart shaped keychain that flashes 2 LED with the touch of your finger! Source files are available on github. This one is a very simple but cool project, something that I would recommend to anyone who is interested into DIY electronics,...

Libre has released a three flavor board called Tritium. The first board is a 32bit Allwinner H2+ based with 512MB onboard memory and costs only $9. The next one is in the range of $19, and is based around the 32-bit Allwinner H3, has 1GB onboard and is capable of 4K30 output via the...

Electronut Labs recently released their open source Nordic nRF52832 development board that can be used for your next BLE project. This tiny board can be plugged on a breadboard or soldered on a PCB and provides additional value from just using the BLE module directly as it includes...

Over the years FPGAs have become readily available to the maker community. They are now more accessible than ever as many development boards has seen the light. It’s now possible to embed a soft-core MCU into an FPGA  rather than using a hard-core ASIC MCU and here is where PulseRain...