This tiny project shows how to interface LED to the microcontroller ATtiny13 and write a simple program in anssembler to make it blink. The code is on Github, click here. LEDs are widely used for various display functions and can be directly (not quite directly, through the resistor) driven from the pins of AVR chip. In our … Read more
This project shows how to form a light impulses using an ATtiny13 to transmit messages encoded with International Morse Code. Project is easy to build and require only three parts. The code is on Github, click here. Morse Code allow to transmit data via short (dots) and long (dashes) impulsions. The advantage of the Morse … Read more
This is a simple and easy to build two-tone alarm that uses ATtiny13 to produce sound effects. Note that with little modifications the project can be easily utilized for many applications, in circuits where a double tone alarm may be required. Project’s code has been designed to make possible extend a list of two-tone sound … Read more
There is a set of projects that require some kind of audio output. For example a simple alarm bell. This project shows how we can produce different kinds of audio effects by just using an AVR MCU and a speaker/buzzer. We will use 8-bit Timer, PWM technique and some pre-calculations to generate right sounds. Tu … Read more
This is a simple ATtiny13 project that controls LED RGB using Software PWM. In result It gives really nice and colourful light effect. In our circuit a LED cathodes are connected to PB0, PB1 and PB2 while common anode is connected to VCC. The code is on Github, click here. Parts Required ATtiny13 – i.e. … Read more