Testing circuit board for Adafruit’s FONA808 module

Testing circuit board

Jesus Echavarria from Spain has tipped us off about his latest experimenting circuit board. This time he has made a testing circuit board for Adafruit’s FONA808 module that carries SIMCOM manufacturer’s SIM808 GSM and GPS transceivers. The Adafruit board includes this module and also some electronics for choosing voltage levels, battery connection and charger. Because I need to test and programming some of this modules, I decide to make an specific PCB for it, allowing the programming and debugging via PC, wich is more comfortable that use a microcontroller for all these tasks. I use the MCP2221 USB-Serial bridge and

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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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An IoT monitor for your laundry room

Arduino IoT monitor for laundry rooms

An IoT-enabled monitoring device for laundry rooms to provide an alarm and phone feedback when a water leakage is detected. It also monitors dryer vent for over temperature conditions and also notifies about the washer and dryer cycle completion. It uses Arduino, Ethernet shield, Blynk app and bunch of sensors.   This started as a quick project to provide an alarm and phone notification when a water leak was detected in our second floor laundry room. A couple of years ago the drain hose from the washer somehow came out of the drain and the water made a bit of a

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Playing Tic Tac Toe against Arduino

Arduino Tic Tac Toe

Nick Koumaris of educ8s.tv has come up with another cool video tutorial showing how to build an Arduino powered Tic Tac Toe game. The gaming interface consists of a colorful LCD touchscreen that allows the user to play this fun game against Arduino. Let’s take a quick look at the code of the project. We need three libraries in order the code to compile. You can find links for the all the libraries in the description below. As you can see, even a simple game like this, require more than 600 lines of code. The code is complex, so I won’t

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