Sony Spresense definitely a good board at $65. This development board from Sony is relatively new and sports expected better A/V hardware. Essentially it is a single board computer for IoT development. In other words it is an luxarious Arduino compatible board with ARM CPU. Of course it can run some kind of Linux on it. The board has integrated GPS, Hi-res audio output and multi mic inputs. The … [Read more...]
What is a Stop in Photography?
What is Stop of Exposure in Photography? For a washed-out looking photo (overexposed), it is convenient to instruct someone to adjust stop by one or couple stop to get the normal feel. Stops are approximate. Exposure has no unit. We can not say how many stop exposure overall as photo received. Stop just describes the relative changes in the amount of light let into the camera. In easy language, … [Read more...]
Shared Responsibility in Cloud Security
When it comes to cloud computing, many companies first think of the benefits of technology. However, security still often falls by the wayside. The reasons are manifold - high complexity, unclear legal responsibilities and missing strategies mean that especially smaller companies see the security responsibility at the provider - a fallacy, which can have serious consequences in the worst case. If … [Read more...]
Guide to Buy Router With 4G SIM Card Slot And RJ45 Ethernet Port
Lot of peoples try to find router with 4G SIM Card slot and RJ45 Ethernet Port. Wireless internet user is a different segment than wired internet users. Depending on country, some of the providers sell such devices, sometime discontinue too. Quite unfortunately, number of such routers is not huge in number and price not exactly lesser. 5G likely to become norm around the year 2022-23. So for the … [Read more...]
How To Configure Fail2ban To Send Daily Email Report
Fail2Ban is a robust tool. By default the system of Fail2Ban sends an email with each ban. There is an action there named mail-buffered. That action expects 5 ban (default) before sending you an email. But a summary report probably more practical. Here are the required steps on how to configure Fail2ban to send daily email report. This system needs to configure mail server on the server under … [Read more...]
Sony E-Mount, A-Mount Lens Adapter Buying Guide
It is common and practical to many to own a Sony A68 alongwith a Sony Mirrorless camera. Sony A68 many a times the first camera to many of the buyers. As we explained before, there are not many lenses for Sony A68. Also, it is not prudent to buy lot of APS-C lenses. As for upgrade on the body of the camera, E-Mount, A-Mount lens adapter is a common need. Buying lens adapter not exactly easy work. … [Read more...]
How to Connect Arduino to IBM Cloud (To Send Sensor Data)
IBM Cloud's IoT platform for this kind of usage is free. This gives the capabillity of sending data from anywhere like from a car at zero cost. Here is How to Connect Arduino to IBM Cloud (IoT Platform). We are taking it granted that the reader will use Arduino UNO (not Yun, steps will be slightly different). For this project you need to get used with using ESP8266 with Arduino UNO. ESP8266 is a … [Read more...]
How To Use IBM Cloud CDN and Cloud Object Storage
Previously we published various guides on Rackspace Cloud Files to use CDN and Cloud Object Storage for hosting static website to hosting jQuery powered video players. Lately, Rackspace Cloud Files has been very costly with a fixed per month fees for just having the account. We have similar guides on HP Cloud CDN (HP Public Cloud has been closed). Other CDNs like KeyCDN not exactly cost effective … [Read more...]
Using Raspberry Pi With Smart TV To Extend Functions
It will appear to a novice that the modern large screen Smart TVs (like Samsung NU7100 or Samsung Q8FN) has just another single board computer inside them. It is not true. Televisions always differently designed and even the modern has dedicated system to process video and audio. It is true that we can develop applications for the Smart TV OS (like we described developing apps for Tizen OS) but … [Read more...]
Sources of 4K Videos For Watching and Download
Many of the New 4K/UHD Television Owners Search For Sources of 4K Videos For Watching and Downloading. This article definitely a timely need to many of the readers. At this moment (December 2018) number of 4K videos available online not exactly less. Ultra-high-definition (UHD) includes both 4K UHD and 8K UHD. These two digital video formats has an aspect ratio of 16:9. UHDTV-1 is 3840 pixels x … [Read more...]