Projects, tutorials, and articles about microcontrollers (AVR, PIC, 8051, MSP430, and STM32 or other ARM architectures), FPGA, analog electronics, and digital electronics
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.
Few weeks ago, I purchased a 32×8 LED matrix board from Sure Electronics. It was a very nice board and I was really excited to use it in one of my projects.
This board is composed of four 8×8 LED matrix modules and HT1632 LED matrix driver. It can be powered by a 5VDC supply and at least three microcontroller pins are needed to control the board.
I tested the board using my 28-pin AVR breakout board and ATmega8 microcontroller. It was not very complicated to use but, to make things easier, I am planning to write my own library for this board.
Here’s the video of the test.
Hey, take a look also at my project about 8×8 LED matrix board using an AVR microcontroller.
Recently, I unboxed and reviewed the STM32 Discovery kit that I just received. I was very happy with it because it’s very cheap for a 32-bit microcontroller development kit with on-board debugger. I tested it with a small program and it was very easy to use.
However, I needed to tweak the STM32 Discovery a bit. There was no big reason for that. I just wanted my kit to look like how I wanted it to be. [Read more...]
It was almost three years since I wrote my last VHDL program. That was the time when I was still an undergrad student. It was long ago and I almost forgot most of the concepts that i learned about VHDL programming. [Read more...]
Recently, ST Microelectronics launched STM32 Value Line Discovery, one of the cheapest microcontroller development boards available. I did not hesitate to purchase one because it’s priced at more or less 10 USD. When I received the kit, I unboxed it right away. The simplicity of the package really caught my attention and I can’t help but give it a review. [Read more...]
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