Monthly Archives: May 2015

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 →