In the first part of the series on the latest smartwatch technologies, we divided the smartphones in to three categories - (i) cheap (ii) mainstream (companion of a smartphone) and (iii) luxurious watches. That part mostly discussed the hardware features touching the presently available high-end chipsets. In this second part of the series, we will focus on the luxurious smartwatches. For obvious … [Read more...]
Difference Between a USB Type-C and a Micro-USB Connector
USB-C Connector (USB Type-C is the official name) Increasingly Being Used in Modern Smartphones and Other Computing Devices. USB-C is not like the classic USB connectors (including the microUSB and MiniUSB connectors). USB came as a replacement for the large connectors to replace the serial ports, parallel ports, the port for PC mouse and keyboards. USB Type B was designed for the larger, … [Read more...]
Review of Samsung A50s Smartphone With Optimization Tips
After J7 Max, it is a good set from Samsung thinking their rule of hefty pricing. It records 4K/UHD video, has an on-screen ultrasonic fingerprint sensor, the screen is beautiful, it has Dolby Atmos. Samsung Galaxy A50s is not powered by a Snapdragon processor. What it offers is a good-enough performance with modern sensor and display for everyday use. Smartphones for regular may get lost or … [Read more...]
Raspberry Pi Zero For Low Cost IoT Projects
There is nothing to disagree with the advantages and low cost of microcontrollers such as ESP32. But, by design ESP32 can not perform complex computing works. Adafruit's CircuitPython and MicroPython are good way to work with Python on microcontroller. But, there are many use-cases where using MicroPython/CircuitPython pushes to the limit. Cost of boards from Adafruit and Arduino are not cheap … [Read more...]
Raspberry Pi 3 Vs Raspberry Pi 4 For Dev Works
Raspberry Pi 4 released just a few months back from today. Raspberry Pi 3B+ has not become obsolete. It will be supported for the projects which work well with it. Unless you need the extra RAM for a project, getting a new board will invite to buy or 3D print an enclosure. The port layout of Raspberry Pi 3B+ is different than Pi 4. The more bad news is that - Pi4 gets hotter. Does it play 4K … [Read more...]
Control Multiple AC Appliances With One ESP32 Arduino
The result of this guide will be a local control panel with ESP32, pushbuttons, LED indicators, relays which can control the connected AC appliances by the simple pushbutton press. When connected to Wi-Fi, it will be able to control the thing over the internet with simple HTTP cURL commands. This guide and code can be used for home automation or creating smart power outlet. Single relay version of … [Read more...]
Influence of the Internet of Things (IoT) on Retail : Part III
This is the third article of this series. In the second part of the article on Influence of the Internet of Things on Retail, we have discussed some of use-cases. In this part, we will discuss the rest of the use-cases i.e. Logistics and Online trading. In addition to the actual sale, the processes in the supply chain offer a high potential for optimization. In particular, in the areas of … [Read more...]
Influence of the Internet of Things (IoT) on Retail : Part I
The Internet of Things (IoT) is evolutionary rather than revolutionary development that will continue to evolve rapidly over the next few years. Apart from the present series, we have Internet of Things in the Smart Home and Wearables and Internet of Things for the readers. The beginning of this evolution by Internet of Things (IoT) dates back to the sixties. At the beginning of the nineties, … [Read more...]
DIY Solder Masking for PCB Making at Home
Solder Mask Protects the Copper Tracing of the PCBs & Gives a Professional Look. Here is About the Solder Masking for DIY PCB Making at Home. Though previous various publications we talked about making PCB at home. These days, there are also flexible PCB mainly for creating connector ribbons with some components. Any kind of PCB better gets a mask. Solder mask is a thin lacquer-like liquid … [Read more...]
Simple Level Shifter With Transistors (3.3V-5V)
Earlier, we talked about the level shifter. Raspberry Pi, ESP32 etc things operate at 3.3v logic whereas, relay modules usually need near 5v TTL logic level. In our guide to control AC appliances over the internet with ESP32, you will notice that directly connecting the relay with ESP32 will not properly work - it will work over the internet but when you'll press the pushbutton, it will go to off … [Read more...]
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