Search Results for: microcontroller
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. It features a huge NaI(TL) crystal, with a diameter of 5.5cm and 5.5cm length. The photomultiplier is a British EMI9656KB and the entire device is encapsulated in an aluminum modular cylinder of no more than 24cm total length and 1270g…
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: saving data from sensors (data logger), saving configuration files, reading external content like images or songs, and so on! One thing is to connect an SD Card to an AVR microcontroller via SPI (relatively easy), a completely different thing is…
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. 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…
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 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,…
Coil Winding machine counter with Atmega8 and Reed relay
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.
Atmega8 and Nokia 5110 LCD
A C++ Library for AVR microcontrollers that allows easy connectivity to the Nokia 3110/5110 graphical LCDs.
Detecting an ultrasonic beacon
How to build an ultrasound beacon and the corresponding receiver.
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 .
ATMega128 and HD44780 LCD using 3 Wires with the 74HC164
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!
Building a robot – Make the robot follow you
Building an autonomous robot using a rover platform and advanced electronics is not an easy job. Kevin asked me to build a robot that would follow its user. A companion, very much like a robo-dog. See the project log here.
DIY/Homemade Radiation Geiger Dosimeter
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.
BMP085 Barometric pressure sensor
The BMP085 is a compact, low power sensor for reading temperature, barometric pressure and altitude. See it in use with Atmel microprocessors.
uRADMonitor – Online Radiation monitoring station
I’ve developed the uRADMonitor as an Environmental Radiation Surveillance automated monitoring device. Data is gathered in real time, 24/7, and is exported via the Internet to a database online. The data is available in customizable charts for analysis.
DIY/Homemade Geiger Muller Digital Counter V3
A story of making a DIY Digital Geiger counter circuit, that can be used with several tubes. Add an enc28j60 Ethernet module and use the data to create graphs available online!
Temperature Sensors DS18B20 and DHT11 with Atmega8
Use the Atmega8 with two temperature sensors: the DS18B20 and the DHT-11. The latter also offers relative humidity data.
Atmega8 and enc28J60 for ethernet support
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.
Capacitor Discharge Microspot Welder / Cutter
A DIY microspot soldering/welding/cutting device using energy stored in a very large capacitor delivered as precisely calculated pulses to working electrodes.
USBAsp – AVR USB Programmer
A good source for cheap AVR USB Programmers. USBasp modules.
Vacuum tube tesla coil (VTTC) using Russian GI-30
A vacuum tube tesla coil built around the Russian tetrode GI-30. My first VTTC and my first vacuum tube circuit, and some very rewarding results.
Multitester using ATMega8 and HD44780 LCD
An Atmega8 multimeter that can measure Transistors: Bipolar/Mosfet , Diodes and Double Diodes , Resistors, Capacitors: between 0.2nF to 7300μF, Triacs and Thyristors.
NaI Scintillation Probe and Gamma Spectroscopy
A scintillation probe enclosing the regulated high voltage supply, the signal amplifier, the photomultiplier and the scintillation crystal (NaI). Building a DIY counter for a NaI Scintillation probe. AtMega8 and a bluetooth module for wireless data output. A cheap and easy to build homemade dosimeter with applications in spectroscopy.
Android Bluetooth controlled robot – Part 1
Learn to connect a bluetooth module to an ATMega micro controller via the UART serial interface and even further, discover it using a bluetooth enabled Android phone. The 9600bps serial link established, can than be used to exchange data: read sensors or control the robot.
Kvarts DRSB-01 Dosimeter
The DRSB-01 is a simple Geiger Counter device that can be used to detect normal vs. dangerous levels of ionizing radiation (gamma and beta).
Variable regulated power supply
A variable 0..30V power supply for max 20ampers! See how to handle all the power and build your own reliable lab power supply.
ATMega8 LCD Game
Create a simple game board and write a little software game for your ATMega8 LCD board.
ATmega8 and Hall Sensor A1302
Atmega8 and an A1302 Hall Sensor for sensing the magnetic fields in close proximity.
Perseus 3 Advanced Robot (using Windows Mobile)
Perseus 3, a 4×4 advanced robot featuring an Atmega8 for sensor interfacing and motor control, and a I-mate SP5 smartphone (200MHz) running Windows Mobile 6.0 as robot’s brain. Small weight, powerful trust, and lots of features including WLAN, Bluetooth, Camera, Speaker, Phone-interface (GPRS, 3G), Microphone (for voice commands) and more.
Atmega8 with Bluetooth radio module
Add Bluetooth functionality to your microcontroller project (atmega8).