As a follow-up to Radu’s Atmega8 and enc28J60 for ethernet support article, I used the libraries to implement an ATmega8 UDP client using ENC28J60 that broadcasts a simple “Hello World” message over Ethernet. Circuit Diagram is exactly the same as simple web-server project(take a look at Schematic&Docs in the project folder). Do not forget to connect CS to PORTB2 if you are using Atmega8 and modify CS pin section in…
A digital counter with a nice LCD display that supports both incrementing and decrementing. Good for various purposes, in this case as a display to a coil winding machine.
A C++ Library for AVR microcontrollers that allows easy connectivity to the Nokia 3110/5110 graphical LCDs.
Build an ultrasonic sonar for non-contact distance measurements, using an Atmega8 and a HC-SR04
Use the Atmega8 with two temperature sensors: the DS18B20 and the DHT-11. The latter also offers relative humidity data.
Learn how to create a network interface for your microcontroller projects. Here I have shown an example using the Atmega8 and the enc28j60 . Build a simple Webserver to show sensor data such as temperature or humidity.
An Atmega8 multimeter that can measure Transistors: Bipolar/Mosfet , Diodes and Double Diodes , Resistors, Capacitors: between 0.2nF to 7300μF, Triacs and Thyristors.
Create a simple game board and write a little software game for your ATMega8 LCD board.
An article about a differential Arduino robot by Rodrigo Nascimento Hernandez
Atmega8 and an A1302 Hall Sensor for sensing the magnetic fields in close proximity.
Add Bluetooth functionality to your microcontroller project (atmega8).
How to use a digital temperature sensor (DS18B20) with a microcontroller (ATMega 8). Source code included.
A tutorial including source code on how to use a 2×16 LCD (HD44780) with the ATMega8 micro controller. LCD Interface as C++ Class.
My first microcontroller (Atmega8) experiments, tools, software, tips and photos.
I’ve used AVR microcontrollers both for hobbies and work projects. These versatile microcontrollers ran the code I programmed them with, but once the final device was shipped, it was hard to change the firmware (the software running on the microcontroller): The user needed an ISP programmer and the software tools to update the firmware. A more convenient solution is to use a bootloader. The bootloader is a small program that…
Trained as a software developer I’ve been active in the field doing mostly mobile apps since 2003. My first contact with microcontrollers came later, in 2009, and I still remember how exciting it was to see the tiny silicon piece run some code. That was the Atmega8 made by Atmel, and the first app was blinking a few LEDs with a simple software loop and a delay. Amazed by the…
This is an Open Source Digital Radiation Dosimeter, that can be used both as a portable detector, but also as a monitoring station to upload readings to the uRADMonitor network. This project is an update to the previous Geiger Counter Kit 1.0. When used as a portable detector, readings are displayed on the LCD. There is also a speaker that beeps on radiation events or is used to sound an…
Introduction to STM32 microcontrollers shows how to setup the ide and toolchain to edit and compile STM32 apps on a MacOS workstation.
As a follow up to one of my earlier projects, the Variable regulated power supply, initially designed to deliver 0..30Volts at up to 10Amps, I have decided it was time for an upgrade. I kept the enclosure and the nice 250W toroidal transformer, and am reshaping everything as a new digital power supply with regulated voltage and current, short circuit protection, lcd display, buzzer for various alarms, temperature sensor on…
Introduction We’re used to Analog to Digital converters (ADC) in a variety of applications such as voltmeters, thermometers or various other sensors. Their purpose is translating a given signal to a numeric representation. To handle numeric data, we encode it in digital, meaning all content is expressed by sequences of 0 and 1. A set of data is said to be continuous if the elements belonging to the set can…
Note: there is a newer version of this project, KIT1.1, see it here If I was to give this project a version number, the closest match would be the uRADMonitor model B. Finally an open source compact radiation dosimeter, that has an LCD and thus allows mobile use, but also comes with an Ethernet adapter so it can do radiation monitoring (uRADMonitor compatible). Yet, this is not quite the uRADMonitor…
Eagle diagrams and instructions for building a DIY Development board featuring the powerful Atmega128 microcontroller
An open source digital portable radiation dosimeter, with external connector for attaching various geiger tubes.
A quick test with the combustible gas sensor, MQ-9B and an atmega8 microcontroller.
A simple rain sensor connected to an ATMega8, provides readings on the level of water detected on its surface.
Wireless data transfer can be useful for a variety of projects. I stumbled upon a very low cost emitter+receiver modules pair, and planned to use it for some time now. There are a few variants available on the market, but they do quite the same thing, just the operating frequency might be different (315MHz / 418MHz / 433MHz/ 915MHz): The emitter usually has 3 pins (VCC->5V, GND, DATA), with a…
EDIT: there is a dedicated blog on this project, here. Make sure to follow it for latest news. A few days ago I announced my intention of creating my first crowd-funded project, but I didn’t tell you what was it about. Well, I’m planning quite a challenging project – to bring my uRADMonitor to a global scale, and create a network of distributed detectors, with data centralized on one server,…
Learn how to set your atmega to work with various external crystals, program the fusebits, and build a fusebit doctor to revive your AVRs, in case you wrote the wrong settings .
Learn how to transform your HD44780 LCD into a easy to use, serial LCD, that you can connect to your microcontroller using only 3 wires! It’s time to save a few pins, and expand your project’s functionality!
A digital dosimeter design that can be used with multiple geiger tubes, constructed around the atmega8 microcontroller and a 2×16 LCD. Equipped with a radio Bluetooth module for remote operation.