This article first deals with simple definitions related to electric and magnetic fields, then enters the subject of the combination of these two fields, which is called electromagnetism and electromagnetic field. This article is a continuation of the basic electronics article. ***””Electronics, Programming and Arduino projects, including the source codes, schematics and PCB plans for…
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In the previous articles, I introduced the capacitor and its calculations. This article is about some examples of capacitor applications and how to use it in the circuit design. Circuits are generally divided into three categories: digital, analog or combined. The role of capacitors in each of these circuits is different, but the function of…
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You must have realized what electronic circuit means during your life. In general, we can have this definition of an electronic circuit: A set of parts which their pins are connected in a special way with a conductive material (such as copper) to each other and they are supposed to make changes to the incoming…
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A transistor is a three-pin electronic component which its main function is to pass the current from two pins according to the other pin (along with current amplification). Transistors have different types, but we are going to examine the bipolar type here. The two pins which the current passes are called the emitter (E) and…
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Resistor prevents additional voltage or current from entering the part in the circuit. The maximum allowed voltage or current of each part may be different from another part, if it exceeds, It will cause the overheat and the material of that part combines with oxygen and in the other words, the part burns. The resistor…
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I have updated the “IP Camera” and “Camera Microphone” firmware to the new revision with two new features, esp32-cam time lapse and AVI file export: 1. Time Lapse: this feature lets you to use your esp32-cam module as a time lapse recorder and saves the video in the memory card. 2. AVI Export: with this…
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Currently we accept only the cryptocurrencies as the payment, so if you are going to buy a project from our online store, and never used the Crypto, please check the “Cryptocurrency” page first. There are two types of the projects in my website. Some are free and have a “Download” button, and the others have…
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The “IP Camera ESP32Cam” (or “SpyCam”) project is an Arduino firmware (.ino) for the “AI Thinker ESP32-CAM” module which has a 2MP Camera, 10 I/O pins, an on-chip LED and one MicroSD slot to store the images and videos. With its tiny sized camera and 240MHz CPU is able to provide a fair quality images…
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In the new revision of the ESP8266 (or NodeMCU) and ESP32 WiFi Microphone project (rev 2.0 WiFi Voice Recorder), I have added the voice recording feature. The updated revision is available in the following link: ESP8266/NodeMCU WiFi Voice Recorder Arduino Source Code – Rev 2.0 ESP32 WiFi Voice Recorder Arduino Source Code and Schematic –…
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This project is a WiFi to LAN with “ENC28J60” and “ESP32” firmware arduino source code (.ino). The project gives you an internet access via WiFi modem, over the LAN port (like USB WiFi stations). Simply you can plug the ESP32 power, configure it with the modem’s SSID and Password, connect your PC or laptop to…
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