Some time ago I got an email from Anthony Peck who is also a big fan of ATtiny13. He wrote that he is working on “AVR Assembler by Example” tutorial. First thought – he started hard task. When he sent me a draft of document then it turned out that all examples are based on ATiny13! … Read more
There was a time when controlling RGB LEDs was not always an easy task. I this article I would like to show how to make it without difficulty using one ATtiny13 and LEDs based on WS2811/WS2811 driver. The addressable LEDs are using protocol similiar to OneWire (very time-depended protocol) and can be connected together to create a strip … Read more
In this example I’would like to show you how to write in assembler “blinky” project that uses timer COMPA (Timer/Counter Compare Match A) interrupt. The previous blinky project is very similar to what is presented here, but with one exception – the delay section has been replaced by timer interrupt. In our circuit LED is connected to PB0 and is blinking … Read more
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
In this article I’d like to show how to install AVRA – an opensource version of assembler for ATMEL (currently MICROCHIP) chips on Linux (Ubuntu). Please note that AVRA is not a part of AVR-GCC and uses different directives. 1. Install AVRA sudo apt-get install avrdude avra 2. Compile and flash example program (ATtiny13) Clone repository from GitHub cd $HOME git … Read more
This project shows how to make a simple timer (start/stop/reset) using ATtiny13, LED Tube module based on TM1637 and one switch. Complete code is on GitHub. Parts ATtiny13 – i.e. MBAVR-1 development board LED Tube Display based on TM1637 Switch – i.e. simple tact-switch Circuit Diagram Software This code is written in C and can be compiled using the avr-gcc. … Read more
This is tinyAVR (ATtiny13, ATtiny25, ATtiny45, ATtiny85, and other) library for LED controller modules based on TM1638 chip. Modules based on TM1638 provide three signal connections (CLK, STB and DIO) and two power connections (VCC and GND). Signal pins can be connected to any pair of digital pins of the AVR chip. Signal pins configuration is … Read more
This article shows how to make an example project of “running dots & digits” using ATtiny13 and popular 7-segment LED tube display based on MAX7219/MAX7221. Complete code is on GitHub. MAX7219/MAX7221 library for LED tube display A lightweight library for 7-segments LED tube displays based on MAX7219/MAX7221 chip that works with tinyAVR family (ATtiny13, ATtiny25, ATtiny45, … Read more
This example project shows how to make random flickering pixels using ATtiny13 and popular 8×8 matrix LED display based on MAX7219/MAX7221. Complete project code is on GitHub. MAX7219/MAX7221 library for 8×8 matrix LED display A lightweight library for 8×8 matrix LED displays based on MAX7219/MAX7221 chip that works with tinyAVR family (ATtiny13, ATtiny25, ATtiny45, ATtiny85) can … Read more
This project is about a simple temperature logging system using ATtiny13 and the Software UART. The system reads the temperature every second and shows it on the serial console (baudrate 19200, settings 8N1). The temperature is shown in °Celsius. LM35 has been used as the temperature sensor. Complete example code is on GitHub. LM35 Temperature Sensor … Read more