In our previously published guides, we listed commonly used transistors with Arduino and How to Turn on LED with LDR. In that turning LED on, we needed no transistor. We Can Create an Arduino LDR Module With Transistor in Easy Way to Print Response as Either Zero or One. We will use a BC 547 as transistor, which is an NPN transistor. After testing this diagram on breadboard, you can make it … [Read more...]
Archives for May 2018
Freedom is Not Limitless in the Cloud (CLOUD Act, EU GDPR)
Cloud Became Such a Thing That Acts Made! 8 years ago, when we published articles on virtualization, cloud computing; few readers actually searched and read. Today, value of keyword of cloud computing touched the sky. Needless to say - our notion of using cloud is for cost effectiveness, not for replacing on-premise. Freedom is Not Limitless in the Cloud in Respect To Acts Like CLOUD Act, EU GDPR. … [Read more...]
Arduino Stepper Motor Buying Guide (Driver IC Included)
Stepper Motor is Much More Complicated From Buying Point of View Than Servo Motor. If you are new with electronics, we will suggest you to first work with 3V DC Motor, then try Servo Motor and after mastering basic sensors, ICs which are commonly used with Arduino; think for stepper motor. In Other Words, In This Arduino Stepper Motor Buying Guide, We Are Taking it Granted That You Know Needed … [Read more...]
Why Companies Opt For Cloud Migration?
Why Companies Opt For Cloud Migration? How do companies go about migrating all or part of their IT to the cloud? What they hope for, what they worry about? From migration to the cloud, CIOs, IT leaders, and other IT-related decision-makers expect first and foremost better performance from their existing IT. They are also increasingly interested in innovations that go beyond that. Why … [Read more...]
Ready to Use LED For Breadboard With Male Headers (Arduino, Pi)
Normally we need to add a 220 Ohm resistor with LED for Arduino dev boards and similar works. Not only making that on breadboard wastes time, but also it takes time to either check the value of resistor manually or using a multimeter. The thing we made looks great and quite useful for day to day electronics development works for simple "plug and plan". We saw the idea somewhere and recreated it to … [Read more...]
Incremental Backup Versus Differential Backup on Cloud Storage
On Cloud Storage Like OpenStack Swift, We Can Set Different Backup Strategy on Our Need. Differential backup is a backup of all changes made since the last full backup which is good for quicker recovery. Incremental Backups are last full backup plus incremental changes as backups. Here is Brief Theoretical Background Behind Incremental Backup Versus Differential Backup. Incremental … [Read more...]
Arduino : Light ON One By One Following Foot Steps on Hallway
This idea is good for automatic turning on and off multiple lights one by one while a person is walking staircase or walking through a passage or hallway. As IR Obstacle Sensors has physical limits, we can not use if the passage is wide like a road - it will fail for physical reasons. Human is not much thick too! In our previous guides - Arduino IR Obstacle Detection Sensor For Dimming LED and … [Read more...]
Which is Better For Server Backup : Cloud Storage OR Cloud Server?
At this moment, we have 5800 articles on this website. If the server is gone away some way, we'll have almost nothing unless we have backup. If we have nothing, then we have to depend on sites which archive data including Google. That is not exactly perfect or easy. Most important for us is text, settings as MySQL dump. Rest is images on FTP. So, we should have regular backup. Now, Which is Better … [Read more...]
What Are RX/TX LEDs and Pins on Arduino Boards?
Why They RX/TX LEDs Blinks Upon Code Uploading? How History of Terminal Relates to it? What Are RX/TX LEDs and Pins on Arduino Boards? History of old Terminal, Telegram and Broadcast engineering. Around 150 years back, we had only way to communicate is sending pulses of current. That was the starting of analog means of connection. Slowly, when telegram improved, terminal devices became faster … [Read more...]
How To Set Up rsnapshot For Backup Of WordPress on Cloud Server/VPS
rsnapshot Once Set, Can Automatically Incrementally Backup. rsnapshot is a Free Software intended to use on CLI for server backups. It is essentially a filesystem snapshot utility based on more older tool rsync. rsync takes snapshots of local and remote filesystems, and rotates the snapshots according to your settings. Here is How To Set Up rsnapshot For Backup Of WordPress on Cloud Server/VPS. We … [Read more...]
Turn On LED in Dark With LDR and Arduino
Why we are going towards apparently easy tutorials on Arduino than couple of years back? These basic projects with components are helpful to learn using sensor based logic. Was not LCD with LDR was difficult project? Why Automatic LED Control Using LDR and Arduino looks simillar? Our older guides were mostly just using modules with libraries and this guide has more at the end for creating complex … [Read more...]