220V-AC to 12V-DC 18W Switching Power Supply

By Hesam Moshiri, Anson BaoFlyback is the most common circuit topology to build galvanically isolated AC to DC or DC to DC converters. Flyback circuit is cheap and relatively easy to manufacture, ther...

A Standalone Full Bridge DC Motor Driver

By Hesam Moshiri, Anson BaoCopyright: Attribution, NonCommercial, NoDerives (CC BY-NC-ND)The Full-Bridge (H-Bridge) is the most popular driver circuit to control brushed DC motors. The main advantage ...

Bridge DC Motor Driver

40V-30A Adjustable Switching Power Supply

By Hesam Moshiri, Anson BaoCopyright: Attribution, NonCommercial, NoDerives (CC BY-NC-ND) A DC-to-DC converter is one of the most commonly used circuit topologies in electronics, especially in po...

Temperature & Humidity Control Unit Using a Raspberry Pi Pico

By Hesam Moshiri, Anson BaoRaspberry Pi Pico is a cute piece of hardware. It is equipped with a powerful dual-core RP2040 microcontroller that offers 2M (up to 16M) Flash and 264K SRAM memories. Such ...

pic;Temperature & Humidity Control

High Precision Digital AC Energy Meter Circuit Voltage-Current-Power-KWh

By Hesam Moshiri, Anson BaoDisclaimer: Some parts of this circuit carry dangerous Mains voltage. Be careful with your experiments. If you are a beginner, ask some experienced users to guide you. ...

Digital AC Energy Meter Circuit

36V-3A Adjustable Efficient DC to DC Step-Down Converter

By Hesam Moshiri, Anson Bao A DC-to-DC converter is one of the most commonly used circuit topologies in electronics, especially in power supply applications. There are three major types of DC-to-...

DC to DC Step-Down

PWM Cooling-FAN Control and Over Temperature Protection using LM35 and ATTiny13

By Hesam Moshiri, Anson Bao Proper thermal dissipation is an essential rule for nowadays electronics. The best operating temperature for the electronic components is 25 degrees (standard room tem...

PWM;

How to print images and barcodes with a tiny thermal printer via Arduino

To be able to use a tiny thermal printer with Arduino, download the Adafruit Thermal Printer library.Built-in functions in the library to print text with different settings:Inverted text: this is...

Arduino IDE thermal printer Adafruit barcode Arduino

GSM & SMS Enabled AI-driven (TinyML) Water Pollution Monitor

In this project, I focused on developing an AI-driven budget-friendly device to collect water quality data from various water resources in the field and forecast water pollution levels based on oxidat...

artificial intelligence Machine Learning Arduino MKR GSM 1400 water pollution environment

Calibration of Spectrum Analyzers

Calibration of Spectrum Analyzers Noise patternsFirst let met define noise: An endless bunch of different frequencies with random amplitudes. By changing the spectrum of the noise spectrum, we can ‘co...

Spectrum Analyzer Calibration pink noise white noise brown noise

220Vac to 5Vdc Transformerless Power Supply Using LNK304

Disclaimer: This circuit is an industrial upgrade for the capacitor-based supply solution, it is connected to the 220V-AC Mains, non-galvanically isolated. if you are not familiar with the electrical ...

LNK304

An Ultrasonic Range Finder Using an SRF05 and an ATTiny85

By Hesam Moshiri, Anson BaoAn ultrasonic range finder is a useful tool in a variety of real-life and robotic applications, such as in obstacle avoidance and distance measurement systems. The ultrasoni...

SRF05 ATTiny85

PiEEG-Open Source Raspberry Pi Shield that Measures EEG, EMG, and ECG biosignals

PiEEG is a open source Raspberry Pi shield that can measure biosignals in electroencehalography(EEG),electromyography(EMG), electrocardiography(ECG),etc. PiEEG can be used in various ways in a very ea...

Bio Sensing Raspberry Crowdfunding Project

Jolly Module----Arduino UNO compatible electronic module with Wi-Fi

Arduino co-founder Gianluca Martino is back with something exciting for Arduino Uno fans: a drop-in upgrade, dubbed the Jolly, offering all the same capabilities plus integrated Wi-Fi connectivity."Th...

Medidor de fonte de alimentação

Double Lithium-Ion/Lithium-Polymer USB Type-C Charger

By Hesam Moshiri, Anson Bao Nowadays, Lithium batteries are used extensively in portable devices, such as cellphones, laptop computers, electronic gadgets, … etc. There is a standard industry-def...

USB

A Portable White Noise Generator Circuit

By Hesam Moshiri, Anson Bao A portable white noise generator is a handy tool that can be used to examine the circuit or a communication line under some random noises to make sure about the reliab...

Cooling FAN Controller using an LM35

By Hesam Moshiri, Anson BaoThe high temperature of the power components is a known phenomenon in electronics. To overcome this challenge, the designers mount heatsinks on the components to dissip...

LM35 Cooling FAN Controller

Why most PCB is green?

PCB board surface color, is actually the color of solder. First, the solder inhibitor can prevent the occurrence of component miswelding. Second, it can delay the service life of the device and preven...

What is Immersion Silver?

Pure silver is a very ideal surface treatment material, as it has the features of softness, good ductility, thermal conductivity, electrical conductivity; and can hardly react with water or oxygen.&nb...

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