Author Archives: hbouzas

Our garage faces the alley and it is not unusual to hear of people leaving the garage door open and get stuff stolen. The trade offs of leaving inside the loop in Houston as it is for any large city … Continue reading →

Ready to use boards available at Tindie WiFi Analog/Digital Module reads analog or digital data, returns the values and responds according to programmable limits. MQTT protocol The analog/digital control module reads analog data and digital data through its 2 input terminals. … Continue reading →

The previous implementation of the WIFI color detection was done with an ad-hoc messaging system. Now, the most bang for the buck would be to have MQTT integrated, as it is much more flexible in terms of the message format … Continue reading →

: The reading of the color components is done via a TCP request to the board. The reading returns a frequency in KHz proportional to the intensity of the color. The frequencies in KHz are returned in a JSON string. … Continue reading →

Forget the DHT11. Implementing the protocol to read temperature and humidity eats all your memory on the ESP8266 and there is nothing left if you want to support MQTT messaging. However, and I2C sensor works. The I2C implementation using an … Continue reading →

Got the vibration detection board working with MQTT. This was really an ordeal given that the memory issues with LUA and the ESP8266 are really frustrating. Its trial and error. Finally and after stripping the code to the bare minimum, … Continue reading →

This is a wifi enabled board that reads color components Red, Green and Blue of any material placed closed to the sensor. The reading of the color components is done via a TCP request to the board and the percentage … Continue reading →

Experimenting with the ESP8266 at one point I came across the need of dealing with analog signals. There are a lot of versions of the module and most of them have GPIO accessibility but not ADC access. Some of the … Continue reading →

A simple vibration sensor can be connected to the ESP8266 GPIO pin and an alarm can be triggered via TCP to report vibration. This could be useful for a number of things, including industrial monitoring, security, etc. The prototype uses … Continue reading →

This module is available for preorder at Tindie click here This project implements a temperature and humidity sensor using the ESP8266 WIFI module and a DHT11 temp/hum sensor. The board can be configured via web in a similar way as previous projects. … Continue reading →