Archive for February 2018

Metal detector kit converted to Arduino sensor

I got a cheap DIY Metal Measure Kit Electronic DIY Soldering Exercise Board with the following specifications: Model: MDS-60 Working voltage: DC3-5V Standby current: ≤ 5mA Working current: ≤40mA Measure depth: ≤ 60 mm Measure alarm mode: sound, light PCB size: 86 x 61mm There was a just the circuit board and some components on

Getting started with SQL | Opensource.com

https://opensource.com/article/18/2/getting-started-sql Building a relational database using SQL is easier than you think. You don’t need to be an experienced programmer to use SQL to create a database. This article explains how to create a simple relational database management system (RDMS) using MySQL 5.6.

Google publicly launches ARCore 1.0 on 13 phones, will begin expanding Lens preview | TechCrunch

https://techcrunch.com/2018/02/23/google-publicly-launches-arcore-1-0-on-13-phones-will-begin-expanding-lens-availability/ With ARCore’s launch, developers are now able to put their own augmented reality (AR) creations into the Play Store and users able to take a first shot at phone. Just a small subset of all of the Android phones out there today. Google has already been working with companies like Snap, Sony, Wayfare, Porsche

Postage-Stamp Linux Board

EEJournal reports that Microchip’s new SAMA5D27 is almost a postage stamp that runs Linux. It is a fully realized microcontroller module that measures about 40mm on a side. It costs about $39 in small quantities. I wrote about this board in Finnish to Uusiteknogia.fi magazine.

Fiber visual fault locator videos

Last year I made a posting on Cheap fiber optic visual fault locator. It told about 1mW 5KM Red Light Pen Visual Fault Locator Fiber Optic Laser Cable Tester Meter puts out highly visible red light into a fiber optic cable that has ST, SC and FC optical connectors.The universal fiber connector worked well with single-mode

Why batteries are holding up tech breakthroughs — and what’s happening now

https://thenextweb.com/contributors/2018/02/21/batteries-holding-tech-breakthroughs-whats-happening-now/ Despite incremental advancements, batteries haven’t changed all that much over the past decade. Major brands are investing in better environmental efficiency, and small tweaks that improve storage and performance, but the typical “battery” is still fundamentally the same. There is stagnation in the realm of batteries.

Gartner reports first ever global decline in smartphone sales | TechCrunch

https://techcrunch.com/2018/02/22/gartner-reports-first-ever-global-decline-in-smartphone-sales/ Smartphone boon era seems to be over. Smartphone market is maturing. Gartner’s latest figures record the first ever decline (a 5.6 per cent decline over Q4 2016 figure) since the analyst began tracking the market. (Though it’s not the first analyst to call a decline.) Global smartphone sales have not been firing on all