You can get the Raspberry Pi Pico on Amazon for just under $4 plus shipping costs. The much older ESP32 you get in various forms for just under $10. You see, you get the ESP32 for a little more money with additional sensors or a display to display sensor data (or even the IP address of the microcontroller) or a camera. On the Raspberry Pi Pico, there are quite new chip RP2040 installed which was … [Read more...]
How to Make ESP32-CAM IP Camera Access from Anywhere in the World
First and foremost thing to warn - you can not compare the pro-grade IP cameras, something like EZVIZ IP camera with ESP32-CAM IP camera. ESP32-CAM IP camera module is dirt cheap and it is great to increase the number of video capturing devices. I would suggest you have some pro-grade camera to cover the main unsecured points of house/office and use ESP32-CAM IP camera module as an "add-on" to … [Read more...]
How to Test USB to TTL Converter
A USB-to-TTL adapter (USB-to-UART adapter, USB-to-UART bridge) is a USB device that lets us connect a device with TTL/UART port to our PC through the regular USB port. We can use it to update firmware on routers, modems, mobile phones, hard disks, and so on. For testing AT Commands, we need a USB-TTL module built on CP2102 IC. For the sake of proper description, we will describe how to wire The … [Read more...]
How to Use PWM in ESP32
Pulse Width Modulation (PWM) is a widely used technique for power delivery. ESP32 has dedicated hardware for PWM. Pulse-width modulation (PWM) of a signal or power source is a technique in which the duty cycle of a periodic signal (a sinusoidal or a square signal, for example) is modified. The duty cycle of a periodic signal is the relative width of its positive part relative to the period. … [Read more...]
ESP32 IoT Setup For Concealed Conduit Wiring
In this article, we will discuss the electrical wiring required to set up a DIY IoT smart control system to control 8 3W spotlights, one ceiling fan and one Indian jhar bati (chandelier lamp). We have a total 8 number of connections where 8 out of 8 are dimmable and we are using the traditional piano/rocker switches. We have discussed about interfacing the piano/rocker switches with ESP32. We … [Read more...]
Rotary Hammer vs. Demolition Hammer
A rotary hammer is the big brother of the home drill. The rotary hammer vs demolition hammer is a debate as in some cases, you will be able to complete the same work with any of the tools. But they do come with their unique benefits and that is the reason for publishing this article. A rotary hammer is a drill that uses rotation and a hammering action that can be used to break up the concrete. … [Read more...]
How Do I Choose the Best Refrigerator?
Refrigerators are sold since the year 1887. It is an appliance for which, we need to know certain points to select the correct one and enjoy it at least for the next decade. A refrigerator must be repairable by the company and third party with minimum effort from the customer. The gross story of most families on this earth is pretty common : the First generation used a low volume … [Read more...]
How to Make a Non-Contact Voltage Tester
Non-contact voltage contact testers are difficult to classify as a tester because they are not subject to a special standard. Non-contact phase testers use a sensor to detect the electric field strength in the immediate vicinity of the conductor and visually signal via a display. A battery is required for operation. Depending on the sensitivity, the existence of voltage can also be determined even … [Read more...]
How to Make a Good Electrical Earthing (Grounding)
The ground is an electrical conductor which is used to carry fault currents, signals, and radio waves. An earthing involves an uninsulated electrically conductive element of a grounding system which is located as a line-shaped electrical contact surface below the earth's surface. The earth should have a good electrical connection to the ground to divert electrical currents there. The … [Read more...]
Guide to Solar System for Beginners
Worldwide a lot of peoples want to harvest electricity from the sun. Having it is like having a well, tube well or a borewell at home. Grid electricity is great to run the appliances of higher wattage but the appliances like the LED lamps can easily run from your system. The purpose of this article is to enlighten you about the different components of a solar system and help you to purchase the … [Read more...]
How To Set Up an Electronics Lab at Home
It is a common question for a hobbyist to ask a list of tools and components to set up an electronics lab. As most of the peoples have a limited budget, set the initial focus on the civil, architectural and electrical part. The selected room must be spacious (of around 150 to 200 square feet), preferably have 12 feet ceiling height. There should be plenty of natural light. Like any lab, there must … [Read more...]
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