Temperature and Humidity Sensor to HTML using JavaScript gauges

1. Description

This is a slightly variation of the setup in the previous post (Sensor Reading Part 2: Temperature and Humidity Sensor to HTML). Readings from a DHT11 temperature and humidity sensor are periodically sent to the client’s browser and displayed using JavaScript gauges. The webpage is hosted on a SD card, data refresh in the client browser is performed through AJAX and XML.

Difficulty level: intermediate.

Continue reading “Temperature and Humidity Sensor to HTML using JavaScript gauges”

Temperature and Humidity Sensor to HTML

1. Description

The setup allows periodic readings from a DHT11 temperature and humidity sensor using an Arduino Uno development board and an Ethernet shield. Sensor readings (temperature and humidity) as well as computed values (heat indexes) could be accessed via a minimalist webpage hosted on a SD card. The webpage refreshes sensor data using AJAX and XML.

Difficulty level: intermediate.

Continue reading “Temperature and Humidity Sensor to HTML”