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Category Archives: Arduino

Si7005 I2C sensor modules back in stock at Tindie

Posted on April 1, 2014 by R-B Leave a comment

The Si7005 temperature and relative humidity sensor breakout boards are back in stock at Tindie. The Si7005 integrates fully factory-calibrated humidity and temperature sensor elements with an analog to digital converter, signal processing and an I2C host interface in a single monolithic CMOS sensor IC. Features: Precise temperature and relative humidity measurements Standard I2C communication 0-100% RH range Excellent sensor stability Check out Arduino Example.

Displaying temperature and humidity on servo-driven analog panels

Posted on April 1, 2014 by R-B Leave a comment

This thermometer and hygrometer project from Kerry Wong’s website illustrates a technique of constructing analog display panels where the display needles are controlled through servo motors. The project uses the SHT21 digital sensor and the ATMega328p microcontroller.

Constructing an external serial monitor

Posted on March 28, 2014 by R-B Leave a comment

The Serial Monitor application embedded into the Arduino IDE is a very useful tool in developing Arduino applications. In addition to its normal use for sending/receiving data bytes over the Arduino serial link, the Serial Monitor tool is extensively used for diagnostic or debugging purpose by serially printing out the intermediate values of the program variables during various steps of execution. The drawback of this debugging approach is you need access to computer for using the Arduino Serial Monitor or any other serial terminal program. ARPix has posted this instructable on constructing an external serial monitor device using the Atmega328

Snow weighing scale

Posted on March 7, 2014 by R-B Leave a comment

Snowfall is typically measured in inches. However, when it comes to shoveling snow off the driveway, your would probably like to know how dense the snow has accumulated because that is what going to determine how much effort and time you will need to complete the task. This instructable shows how to modify a simple digital weighing scale to construct a snow monitoring scale which could be a nice addition to your DIY weather station.

Playing WAV sound files with Arduino

Posted on March 7, 2014 by R-B Leave a comment

This instructable illustrates a simple circuit to play wav sound files stored in an SD card using arduino Nano V3.0.

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