Programming ESP8266 With Arduino IDE : The Easy Way

The ESP8266 WiFi Module is a self-contained SOC that can give any microcontroller access to your WiFi network. It’s an extremely cost-effective board with a huge and ever-growing community. Each ESP8266 module comes pre-programmed with an AT command set firmware. This module has a powerful on-board processing and storage capability that allows it to act as a standalone microcontroller. Following 2 easy step ...

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12$ 30MHz signal generator using Arduino

A signal generator is an electronic device that generates electronic signals and waveforms. These electronic signals are either repeating or non-repeating as per the requirements and field of applications. It is generally used in designing, testing, troubleshooting and repairing electronic devices. A signal generator can generate various kinds of waveforms. Most common are the sine wave, square wave, sawtoo ...

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Reverse engineering a server CPU voltage regulator module

A recent ebay fishing expedition yielded an interesting little part for the very reasonable sum of about five pounds. It’s a voltage regulator module from a Dell PowerEdge 6650 Xeon server. I originally bought this because I had the idea of salvaging parts from it to use in another project. These are high quality modules that will have very good inductors and sometimes an array of high value ceramic capacit ...

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DIY USB to TTL Converter

Now that the PC’s com port or Serial port is almost obsolete there is quite a lot of requirement for USB to TTL or USB to RS232 converter. USB to TTL converters are required for interfacing microcontrollers to PC it is also required for loading code in Arduino Mini, setting/modifying ESP8266 firmware. Over here we are going to make a do it yourself (DIY) USB to TTL Module on a breadboard. Lots of USB to TTL ...

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Smart 3D Printer Filament Counter (FilamentBot)

For 3D makers the worst thing is running out filament in the middle of a hours long print. This device will order for you when it is low! Introduction The FilamentBot is a Amazon Dash Replenishment Service (DRS) enabled smart filament counter that will contentiously track the filament usage by measuring the actual length of the filament that has been dispensed on any 3D printer, and automatically re-order t ...

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Smart IOT Propane Monitoring Pedestal

Smart IOT Propane Pedestal capable of tracking propane level as well as detecting any propane leaks. Integration with Amazon Alexa. Things used in this project Hardware components Arduino MKR1000 × 1 SparkFun Load Sensor 50kg × 4 SparkFun Logic Level Converter - Bi-Directional × 1 SparkFun Load Cell Amplifier HX711 Breakout Board × 1 SparkFun LPG Gas Sensor-MQ-6 × 1 Breadboard (generic) × 1 Amazon Alexa Ama ...

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How to Improve Buck DC Converter Light Load Efficiency with an LDO

Designing a DC/ DC converter that only consumes micro amps of current at no load can be compared to fueling a muscle car with lighter fluid – you may get it to work, but it won’t be easy. High efficiency at full load currents is commonplace in most modern DC/DC converters; however, achieving high efficiency when the load is disabled or disconnected is still a difficult and/or expensive task. Many automotive ...

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USB to RS485 converter

Testing of sensors with RS485 using PC without proper interface is not possible. Since RS232 interfaces are very rare, the interface should be hooked to USB. The interface between USB and RS485 can be soldered with one of the many FTDI interfaces with added RS485 driver, or bought as assembled module. There is always the third option. I made it from scratch. I took smallest STM32F0 with USB and UART interfa ...

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Fluke/Philips PM66xx Frequency Counter OCXO Upgrade

In this post I will document an OCXO upgrade board I designed for the Fluke/Philips PM66xx line of frequency counters. Introduction A few months ago I purchased a Philips PM6674 frequency counter on eBay. It's an older 9 digit counter with two channels that has a maximum input frequency of 550MHz. The design feels dated compared to more modern counters, such as my Agilent 53131A. However, it is still a full ...

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Controlling Patient’s Fever with Artik & Arduino

This project consists of 2 devices. the first one is wearable and monitors temperature, second one will control the temperature. Things used in this project Hardware components Arduino MKR1000 × 2 SparkFun Logic Level Converter - Bi-Directional × 1 Li-Ion Battery 1000mAh × 1 RGB Diffused Common Cathode × 1 DHT11 Temperature & Humidity Sensor (4 pins) × 1 Relay Module × 1 Resistor 1k ohm × 2 Software app ...

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ESP8266 Standalone WiFI Relay Control

AIM To control a relay switch using esp8266 in standalone mode(without arduino,pic or any other Micro-controller) via Web-UI The ESP broadcasts its own SSID.It does not connect to a router.local IP address of esp is 192.168.4.1 Step 1: Gather Hardware ESP 8266 (There are a lot of variants available in the market.for this tutorial lets just use the esp-01).If you are curious about the different variants clic ...

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AmpStrike – Battery Powered Bench Power Supply

Introduction This is a small bench power supply that is powered by two lithium-ion batteries. The project was inspired by Dave Jones from EEVblog but the design is completely mine. The voltage range is 0-20V regulated in 10mV steps and maximum current is 1A with current limit set in 1mA steps. Schematic Linear Voltage Regulator The power supply runs on a linear voltage regulator built on discrete components ...

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