Category Archives: ESP8266


DIY YouTube subscriber counter

DIY YouTube subscriber counter

Becky Stern’s new Instructables describes how to build a very simple realtime YouTube subscriber counter using a ESP8266 board and a seven segment LED display module. I was inspired by the Play Button awards YouTube sends out for subscriber milestones and whipped up a simple circuit using an ESP8266 wifi board and seven segment display to show off my realtime subscriber count. This is a great IoT beginner project, with just a little soldering and a code personalization required to make it work for your own account. Before attempting this project, you should be generally familiar with uploading new programs

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Heart rate monitoring over the internet using ESP8266

Pulse meter

With the rapid development and maturing of internet-of-things (IoT) technology, the IoT-driven smart sensors and systems are changing business in multiple industries. In healthcare industry, it is gaining more attention lately because of its immense potential in reducing the cost of tracking health information, as well as in providing health care to people who were not able to receive it before. This project describes a simple remote heart rate monitoring system based on the ESP8266 platform and the Easy Pulse Plugin sensor module. The ESP8266 reads in the analog photoplethysmograph (PPG) output from the Easy Pulse sensor, computes the heart beat rate in real time,

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Tutorial 8: ESP8266 Internet clock

ESP8266 Internet Clock

The National Institute of Standards and Technology (NIST) provides official time in the United States. NIST disseminates the time using several methods, including radio broadcasting over short-wave and long-wave frequencies, telephone dial-in services (ACTS), and Network Time Service (NTS) over the internet. This tutorial describes how to build an ESP8266-based internet clock that uses NIST’s NTS service to retrieve accurate time information. The time is displayed on a colorful TFT LCD (ILI9341 driven) in both analog clock dial and digital formats. The time is synchronized to the NIST server in every 2-minute interval. Hardware This project uses an ESP8266 module to connect to

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Tutorial 7: ESP8266 and ILI9341 TFT LCD

Rainbow colors demo

In tutorial 3, we discussed how to use an SSD1306-driven I2C OLED screen with EasyESP-1 for displaying basic text and graphics. We used a 0.96″ (along the diagonal) 128×64 monochrome pixels OLED display for illustration. Despite its small size, the readability was pretty good due to its high contrast, which makes it a very good, compact size display for general applications. The excitement of having a display screen in an ESP8266 project can be further enhanced by upgrading the choice of display to colorful TFT LCD. One such screen that is readily available in the market at affordable price is ILI9341

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Animated IoT clock that can’t be trusted

Animated IoT clock

An animated IoT clock shared by Tobozo Tagada does not use any RTC module orconnect to a NTP server to retrieve the time. It rather scans the open WiFi access points in its surrounding and extract the date/time from the “Date” HTTP header, if sent out by some. Trust this clock’s accuracy at your own risk. It uses WeMOS ESP8266 board and an OLED screen to display the time along with a pong animation in the background to “cut on the boringness of the clock”, as he said. Expecting unknown networks to provide a HTTP header value and relying on it to estimate time

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