SDI-12 on AVR with bitbanging
Recently I had to implement SDI-12 communication on a multi-parameter sensor. The PCB had an extension port on the PCB, exposing UART1 RX&TX, but also 2 GPIO's. While I considered…
Simple AVR Bootloader tutorial
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…
DIY AVR Development Board with Atmega128
Eagle diagrams and instructions for building a DIY Development board featuring the powerful Atmega128 microcontroller
The AVR Watchdog
The AVR Watchdog is an essential mechanism to protect long term run applications from code freezes affecting their functionality.
Using a Rain sensor with AVR Microcontrollers
A simple rain sensor connected to an ATMega8, provides readings on the level of water detected on its surface.
AVR SDCard FAT support with FatFS
You've probably seen or done lots of cool microcontroller projects already, but did you ever consider adding permanent data storage to your projects? I did, and there are numerous advantages:…
Using FS1000A/XY-FST RF Radio module with AVRs
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.…
How to set the AVR Fusebits
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 .
NMEA GPS Library for AVR Microcontrollers
An open source library that allows you to use a NMEA GPS Module with an AVR Microcontroller. UART Communication and NMEA Parser is included.
USBAsp – AVR USB Programmer
A good source for cheap AVR USB Programmers. USBasp modules.
AVR Studio 5 snprintf / vsnprintf problem with Floats
How to fix the problem with Float variables in AVR Studio
AVR Studio 5 C++ Support
Build C++ projects with AVR Studio 5
Decoding Renke Weather station data
The Renke RS-FSXCS-N01-*-EX weather station is a compact, all-in-one environmental monitoring solution capable of measuring key atmospheric parameters such as wind speed and direction, temperature, humidity, noise levels, air quality (PM2.5, PM10),…
NMEA GPS Library for Microcontrollers -2-
A few years back I wrote a NMEA parser library that would run on AVR Microcontrollers. Released as open source under GPL, it became quite popular. All these years I…
Microcontroller Programming Issues
Bugs in software are bad, bugs in hardware are even worse, but inconsistent results are what makes it a total nightmare. Not my first post on crazy voodoo wasting precious…
Introduction to CC2541
Exploring the versatile AVR microcontrollers or the powerful STM32 counterparts were amazing experiences which resulted in interesting projects, many of them presented on this blog. For a hardware designer, the…
DIY Geiger Counter Kit 1.1
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.…
Portable Environmental Monitor
The portable environmental monitor addresses pollution, the kind that we are unable to see but directly affects our health and causes life threatening diseases. Airborne toxic chemicals, radioactive dust and…
Resistive touchscreen
A complicated project July was a tough month, and August is no different. Due to some components arriving late, I've only been able to start my work on the Hackaday.io…
Sharp GP2Y1010 dust sensor
The Sharp GP2Y10 dust sensor can detect dust in air using the reflected infrared light, including very fine smoke particles. See how to use it with a microcontroller.
ESP8266 Troubleshooting
I got a few esp8266 modules back in 2014, shortly after they've been announced on HackaDay. I didn't have much time for them, being caught with other projects, up until…
ILI9341 touchscreen LCD Library
I got a few QVGA LCD's with resistive touchscreen for an ongoing project. All that was left to do was putting the driver code together. The LCD code part was…
Introduction to STM32 microcontrollers
Introduction to STM32 microcontrollers shows how to setup the ide and toolchain to edit and compile STM32 apps on a MacOS workstation.
DIY Dosimeter Geiger Counter KIT1.0
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…
ILI9163 LCD Library
An open source code library for the ILI9163 LCD. Circuit diagram for connecting it to an ATmega128 and demo video are included.
Atmega128 Voodoo
Apparently I had no better inspiration on how to name this post. It all started with a nice sunny day, when I was in great shape for doing creative work.…
Single Chip Computer
Learn how to create a single chip computer running BASIC.
The MQ-9B Combustible gas sensor
A quick test with the combustible gas sensor, MQ-9B and an atmega8 microcontroller.
UT50 NaI Scintillation probe
I met some great people today, and I also got a wonderful device for my ongoing experiments as a gift: The UT50 Scintillation probe, manufactured by SC ICPM SA Romania.…
Global radiation monitoring network
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…