Volts and Bytes

Simple Sensor Webserver

March 17, 2012 By Jer Leave a Comment

Probably, some of you have tried buying cool but cheap products from Ebay. Like some of you, I also have bought items from Ebay several times already. One of the items that I got from Ebay is a small ENC28J60 based ethernet module.

As you can see from the image above, the ENC28J60 module is very small. The PCB is more or less one-inch square which is almost as small as the included ethernet jack.

I decided to make a simple sensor webserver using the ENC28J60 that I got from Ebay. I knew that there were already several sensor webserver projects posted on the internet but I couldn’t resist the temptation of making another one because I had a couple of sensors and an extra microcontroller lying around. [Read more...]

Filed Under: Projects Tagged With: Arduino, AVR, CM-R, ENC28J60, Ethernet, Humidity Sensor, Internet, LM35, Sensor, temperature, Webserver

AVR Multimedia Board

October 23, 2011 By Jer Leave a Comment

When I was able to produce a beep tone using a microcontroller for the first time, I was very proud of myself. Later, I learned how to interface an LCD module to a microcontroller. Those were the days when I was just starting to step into the world of microcontrollers and the little accomplishments that I had always drove me to learn and do something better.

I love sound and graphics very much. I love it even better if I make them work with microcontrollers. That is why I said to myself that I want to build a microcontroller with a touchscreen TFT LCD module and an audio driver. That way, I would be able to do a lot of projects that involves sound and graphics. Hence, the AVR Multimedia Board was born.

[Read more...]

Filed Under: Projects Tagged With: AD7843, ATmega, ATmega164P, AVR, ILI9325, LCD, SD card, TFT, Touchscreen

Using Analog Humidity Sensors

March 15, 2011 By Jer 4 Comments

Humidity sensors measure the relative humidity of air. They come in different types – both digital and analog types. The digital types are relatively more expensive than the analog types. The measured relative humidity by digital humidity sensors are commonly sent out using digital serial interfaces like I2C and SPI. Analog humidity sensors are cheaper and they come in two types – capacitive and resistive humidity sensors.

[Read more...]

Pages: 1 2 3 4 5 6

Filed Under: General Information, Others, Tutorials Tagged With: CM-R, CMR, Humidity Sensor

Motion Activated Message Display

December 5, 2010 By Jer 6 Comments

Recently, I tested the 0832 LED Matrix Board that I purchased from Sure Electronics. Since I have a simple AVR microcontroller breakout board and a PIR sensor that senses motion, I decided to make something fun using the 0832 LED Matrix Board. [Read more...]

Filed Under: Projects Tagged With: ATmega8, LED Matrix, PIR

LPC1343 Breakout Board

November 21, 2010 By Jer 17 Comments

The LPC1343 is a low power ARM Cortex M3 microcontroller targeted for embedded applications. It has 32KB of flash memory and 8KB of SRAM. On-chip peripherals include I2c, SPI, UART, Timers, Interrupts, ADC, USB, etc. It includes both UART and USB bootloader. Believe me, the USB bootloader is cool. [Read more...]