ESP8266 NodeMCU Backdoor uPWM hack for IR signals

The AnalysIR crew has published an article showing how to achieve accurate PWM for Infrared carrier signals on the ESP8266 NodeMCU: Quite simple really – just set the baud rate to 10 times the desired Infrared carrier frequency and send a ‘magic’ 8 bit character to achieve the desired duty cycle. Of course we need […]

WiFiRGB – A WiFi-enabled RGB high-power LED

Tom blogged about his WiFi/Browser controlled RGB LED project: Features Simple hardware, using pre-fabricated modules Controls an RGB LED via any recent browser, any operating system WiFi credentials can be configured via browser Software is written as an Arduino sketch Full details at Tom’s blog. Check out the video after the break.

How to build a control circuit with adjustable working time via wi-fi

Yahya Tawil over at All About Circuits posted a detailed how-to on building a control circuit with adjustable working time via Wi-Fi: In this article, you’ll learn how to build a system that can turn DC loads on and off using a mobile application. You’ll also learn how to perform this task via immediate actions or via […]

Running NodeMCU on a battery: ESP8266 low power consumption revisited

Tinkermax shows us how he reduce the current consumption of his v2 NodeMCU in deep sleep to < 50μA: Unfortunately, with all this added convenience comes the drawback of added power consumption, which continues even when the ESP8266 is in deep sleep. I measured 18mA to the NodeMCU board while the ESP8266 was in deep […]

ESP8266: SSD1306 OLED library release

Daniel Eichhorn writes: The “ESP8266 OLED SSD1306″ is an open source library which allows you to control those pretty OLED modules from our beloved ESP8266 module. Fabrice Weinberg cleaned up all the ugly pieces of code which I initially wrote caused by my near C/C++ illiteracy. He also added support for Pasko’s BRZO I2C library […]

OpenGarage, an Open-source WiFi garage door opener

Ray Wang has published a new project called OpenGarage, an open-source garage door opener based on ESP8266 and the Blynk app: Today I am very excited to introduce you to OpenGarage — an open-source, universal garage door opener built using the ESP8266 WiFi chip and the Blynk app. I’ve wanted to finish this project for a […]

ESP8266 breadboard adapter board

Markus designed a single-sided ESP-12/ ESP-07 breadboard adapter PCB: Features are: – Fits ESP-12 and ESP-07 module – Single-sided self-etchable design – Few, cheap parts in SMD – Breadboard-style – one row on each side accessible – Vin >4.5V (max. 7V) input possible with 3V3 onboard voltage regulator (with two capacitors 10µF) – Power-indicator LED […]

ESP8266 – Wireless weather station with data logging to Excel

Rui Santos writes, “In this project we are going to establish a wireless communication between two ESPs and send data from three sensors to an Excel spreadsheet. This tutorial shows a wireless weather station with data logging that you can implement in your home.” Project info at Random Nerd Tutorials site.

Reverse engineering the ESP8266 WIFI-to-Serial port adapter

Here’s a video from electronupdate on reverse engineering the ESP8266 WIFI-to-Serial port adapter: Another very interesting bit of technology. The combination of so much functionality into such a small part is a real touch-stone as to where things are heading. A quick look at the antenna design to see if I could sort down the […]