ESP8266 | Embedded Lab

Category Archives: ESP8266

ESP8266 powered Christmas tree lighting

Posted on November 7, 2016 by R-B Leave a comment

Christmas lights are an important aspect of the winter holidays in our country. Every year, we look for new fun ways of lighting outside and decorating the Christmas tree. This ESP8266 driven RGB LED lighting for Christmas tree from Evil Genius Labs is an artistic creation and possibly a good option to try if you’re bored of using the same old lighting for your tree. The 6.5’ tall white tree gets lighted with 250 WS2811 RGB LEDs, and controlled by an ESP8266 microcontroller using the FastLED library. The animation can be controlled with a web-based app stored in the on-board flash memory of

NTP synchronized analog wall clock

Posted on November 4, 2016 by R-B Leave a comment

Analog wall clocks are an old invention. Besides telling time they also serve as a wall decoration. Most of the modern days inexpensive wall clocks are not good at keeping the time accurately. Also, they usually don’t have auto-adjustment for daylight saving time. Victor-chew shares his attempt to tether a cheap IKEA analog wall clock to the ESP8266 WiFi microcontroller and make it sync with a NTP server for accurate timekeeping as well as auto adjustment to daylight savings. In this project, I connected a cheap $2 Ikea analog clock to the ESP-12/NodeMCU dev module and synchronized the clock time with

ESP8266 powered DIY Geiger Counter

Posted on October 26, 2016 by R-B Leave a comment

DIY Geiger counter projects are very popular among hobbyists. They all use a Geiger-Muller (GM) tube, which is filled with an inert gas such as helium, neon, or argon at low pressure, to which a high voltage is applied. The tube becomes electrically conductive when it is impacted by a high-energy particle or photon. Earlier, we have seen a very simple Geiger counter circuit using 555 timer, where the timer IC is configured as an astable multivibrator to drive a step-up transformer through a MOSFET in order to generate the high voltage required for the GM tube. This ESP8266-powered DIY Geiger counter by

ESP8266 temperature and humidity logger with deep sleep enabled

Posted on October 8, 2016 by R-B 2 comments

ESP8266 has made it possible for hobbyists and makers to develop IoT applications in simple and inexpensive ways. This article shows an example of making a very simple temperature and humidity logger using ESP8266 that uploads the data directly to a cloud service, such as ThingSpeak, and allows to visualize the data in real time. The ESP8266 module used in this project is WeMOS’ D1 Mini board. Because the D1 board comes with the CH340G USB to UART converter module and a micro USB connector preinstalled on board, all you need is an USB cable to upload your program to the ESP8266. For temperature and

Another weather station using modular design approach

Posted on September 29, 2016 by R-B Leave a comment

Nevyn’s entry to the 2016 Hackaday Prize contest is a modular weather station built using a number of sensors mounted on a general purpose circuit board. The sensor readings are captured by ESP8266 and sent out to the internet. The initial project supports the following measurements: – Air temperature – Air pressure – Humidity – Ground temperature – Light intensity (luminosity) – Ultraviolet light intensity – Wind speed – Wind direction – Rain fall The weather station will be designed to work off-grid with limited capacity to store data for upload at a later date should an Internet connection fail temporarily.

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