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Heart rate monitoring over the internet using ESP8266

Posted on February 26, 2017 by R-B 4 comments

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,

Tutorial 8: ESP8266 Internet clock

Posted on February 8, 2017 by R-B 4 comments

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

Tutorial 7: ESP8266 and ILI9341 TFT LCD

Posted on February 7, 2017 by R-B 3 comments

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

Tutorial 6: ESP8266 and BME280 make a local/remote weather station

Posted on February 5, 2017 by R-B 2 comments

In previous tutorials, we explored how to connect an SSD1306-based I2C OLED to ESP8266 for displaying texts and graphics, as well as to setup an ESP8266-based web server. This tutorial combines the knowledge gained before to make a standalone weather station that will display the local weather data on an OLED screen. In addition, the weather station will also run a web server that would allow a remote computer to access the weather data via web browser. Hardware Setup This project uses the EasyESP-1 board and the following hardware devices. BME280 sensor module: BME280 is a fully integrated environmental unit from Bosch that combines sensors for pressure,

Tutorial 5: Setting up an ESP8266 Web Server

Posted on February 3, 2017 by R-B Leave a comment

In this tutorial, we will explore how to setup an ESP8266 web server to serve an webpage that can be displayed on a client’s browser. The client can be any other computer, smartphone, or tablet connected to the same WiFi network. The webpage will also provide an user interface to allow you to toggle an I/O pin of the ESP8266 hardware. Hardware Setup There is nothing much to do in the hardware setup of this experiment. In your EasyESP-1 board, all you need to do is to connect the LD1 pin to D1 pin using a jumper cable. This will connect the

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