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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.

Product review: EasyPIC v7 development board

Posted on March 31, 2014 by R-B 6 comments

MikroElektronika, a Belgrade, Serbia-based company is well-known for producing quality software and hardware development tools for a wide range of microcontroller families, including PIC, AVR, and ARM processors. Their mikroC Pro for PIC has always been my favorite PIC compiler, and has been extensively used in my PIC tutorials and projects published on this website, for its ease of use and rich set of built-in library routines. Today, I am reviewing MikroElektronika’s EasyPIC v7, which is the latest PIC development board in their line of EasyPIC series. I would like to thank to Newark USA for providing the EasyPIC v7 board

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

Wireless monitor for gas consumption at home

Posted on March 25, 2014 by R-B Leave a comment

This low power wireless gas meter monitor built at a budget of about 35EUR is battery-powered and uses a JeeNode MCU board along with an nRF24L01+ transmitter to send the gas consumption info to a remote Raspberry Pi.

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