Nixie Tube Energy Meter

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John Whittington decided to build a Nixie tube energy meter to measure his house power consumption.

 An Arduino would be the microcontroller but I wanted the meter to provide some form of data stream for a web based energy history. To make it an IoT, I a paired ESP8266 with it. I used both together because the Arduino ADC has a better resolution and has been tried and tested.

Nixie Tube Energy Meter – [Link]

 

Teensy 3.2: A first look at the powerful Arduino compatible board

educ8s.tv reviews the Teensy 3.2 Arduino compatible board and examines if it’s compatible with his existing sketches.

If you need a small but powerful Arduino board, Teesy 3.2 is the best board available today. In this video we take a first look at Teensy 3.2 board, we set it up and we run the blink program. Next we try the code of a previous Arduino project to see if it is really compatible.

Teensy 3.2: A first look at the powerful Arduino compatible board – [Link]

DIY a Simple Automatic Humidifier

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loovee @ instructables.com has build an automatic humidifier that will monitor temperature and humidity and will act if the situation is not ideal.

Water Atomization is a perfect module for you to develop an atomizer or an atomizer module in your applications easily. With just a few simple steps, you can prototype an atomizer. It has Grove interface which makes it easy to be integrated into plenty of applications.

DIY a Simple Automatic Humidifier – [Link]

Keysight EXA Signal Analyzer / Spectrum Analyzer Review, Teardown & Experiments

In this episode Shahriar reviews the Keysight EXA Signal Analyzer / Spectrum Analyzer (N9010A). The X-Series Signal Analyzers and Spectrum analyzers from Keysight are compared against each other. The EXA is a general purpose spectrum analyzer with extensive applications.

Keysight EXA Signal Analyzer / Spectrum Analyzer Review, Teardown & Experiments – [Link]

Lead Acid Battery float charger

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Nobilis @ instructables.com has build a lead acid float charger out of an old phone wall charger:

If you do not use your motorbike on the winter or your car stands for weeks — you better have a float charger connected to the battery. Otherwise you probably encounter engine starting problems, and your battery’s lifetime is getting shorter. In a depleted battery the emerging sulfation on the negative plates is avoid the battery to take adequate charge again, and a vicious circle happens: the battery is unable to get fully charged, which increase sulfation, which avoids proper charging, and so on, until your rather new battery is ready to be recycled.

Lead Acid Battery float charger – [Link]

Maxim Reference Design – Wearable, Galvanic Skin Response System

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The MAXREFDES73# reference design from Maxim Integrated is a wearable, mobile galvanic skin response (GSR) system featuring the MAX32600 wellness measurement microcontroller.

his battery-powered platform takes high-precision AC impedance measurements while consuming minimal power. The MAX32600 microcontroller features the industry-standard ARM® Cortex®-M3 32-bit RISC CPU that operates at up to 24MHz, while integrating multiple high-performance analog peripherals.

Maxim Reference Design – Wearable, Galvanic Skin Response System – [Link]

Better 3D graphics on the Arduino – ILI9341 LCD

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M Rule @ crawlingrobotfortress.blogspot.com discuss about ways to optimize 3D rendering on ILI9341 LCD and Arduino:

Both optimizing ILI9341 LCD drivers and rendering basic wireframe meshes have been done before. XarkLabs provides an optimized fork of Adafruit’s library. Youtube user electrodacus has also implementd an optimize driver for the ILI9341 communicating over SPI.

Better 3D graphics on the Arduino – ILI9341 LCD – [Link]

Raspberry Pi Zero Extreme Teardown

A very close look at the new Raspberry Pi, include a die-dcap of the SOC (system on chip) and looking at what some of the silkscreen text means

Raspberry Pi Zero Extreme Teardown – [Link]

Building a piCentr home media center

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mjrice @ instructables.com shows us how to build a Raspberry Pi home media center. The layout of the enclosure is meant to keep all cabling tidy and inside out of view, with accessible ports for everything you need.

A 3D printed internal chassis is part of the design, which holds the Pi 2 and up to two 2.5” HDDs, and is specially suited to use with the Western Digital pidrive. Remote control of the appliance is supported by installing a FLIRC USB device and the remote of your choice. The design also sports a power-wake button and a cooling fan.

Building a piCentr home media center – [Link]

Isolated USB-to-UART converter

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Jacob Beningo shows how to build an isolated USB to UART converter using Sparkfun’s modules.

A simple isolation circuit that costs only a few dollars could have been used to protect the USB port on the computer. Embedded system developers get used to plugging strange hardware and components into their computers on a daily basis and rarely consider the consequences of what their actions might bring.

Isolated USB-to-UART converter – [Link]