DIY Digital Thermometer 2

Few months ago, I published my first DIY digital thermometer. However, like any simple projects/prototypes,  that project needs some improvements. Previously, I used a voltage regulator that has a 100mA rating. Though it was able to source current to the whole circuit, it gets too hot easily. Another problem with that was that the voltage regulator was very close to the sensor. Since the voltage regulator heated up easily, it always affected the temperature reading of the digital thermometer.

To solve those problems, I came up with a second version of digital thermometer.

[Read more...]

I/O Led Monitor

A light-emitting diode (LED) is a semiconductor diode that emits light when an electric current flows through it. It is a very useful device used in electronics. LEDs can be used for lighting, indicators, and even data communications. They are also very power efficient and they are used instead of traditional electric lamps because they can be as bright as lamps while consuming less power than the lamps. [Read more...]

DIY Power Supply

Every circut board requires a power supply to operate properly. Usually, the power supply provides+5Vdc or +3.3Vdc to the whole circut board. There are also instances in which the power supply is not integrated to the circuit board and power must be provided by an external or separate power supply. [Read more...]

Simple 8×8 LED Matrix Board using AVR

I am featuring here a simple project that uses an 8×8 LED matrix and an AVR microcontroller. It is fun to have something like this. Using this, you can make flashing texts, scrolling texts, or any sort of animations that involves texts or graphics.

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DIY Digital Thermometer

This project is a digital thermometer that uses a microcontroller with analog-to-digital capability, an analog temperature sensor, and some seven-segment displays. The circuit is pretty simple and it can be powered by a 9-volt battery which makes it very portable.

Please continue to read as I go a bit deeper to the details of what builds this easy project.

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8-pin AVR based Mood Lamp

I got a sample of a RGB LED (Red Green Blue Light Emitting Diode). So, I decided to make something fun out of it. Using an 8-pin AVR microcontroller, ATtiny45, I made a simple prototype to control the RGB LED using PWM or Pulse Width Modulation. [Read more...]

USB Development Board

USB has established itself as the new standard for connectivity. That is why USB connectivity has become the “holy grail” of most embedded applications.

Well, let me get straight to the point. If you want to start developing projects with USB interface, you want to have  the  proper development tools. To have the tools that you need, you either have to buy or to do-it-yourself.

If you want to build a USB development board yourself, here is one for you. [Read more...]