Sometimes in embedded design you may want to go wireless. Might be you will want to log various readings of remotely placed sensors, or simply build a remote control for robot or car alarm system. Radio communications between two AVR microcontrollers can be easy when specialized modules are used. Lets try to run very well […]
Running TX433 and RX433 RF modules with AVR microcontrollers using Atmega8 Read More »
Some time ago I’ve build a prototyping board with graphical LCD. It have served for various small projects and prototypes. Had a spare temperature sensor DS18B20 and decided to put simple temperature display project. GLCD board is equipped with Atmega32 microcontroller running at 16MHz. DS18B20 sensor is connected to port D pin 6. LED connected
Temperature sensor with time and date display on graphical LCD using Atmega32 Read More »
Some time ago we have posted alphanumeric AVR-GCC LCD library. It works fine in 8-bit and 4-bit modes. But it has some limitations that some people may find annoying. One of them is requirement that LCD pins has to be byte aligned for instance in 8 bit mode LCD_D0 … LCD_D7 pins has to be
AVR-GCC LCD library – mixed pin support using Atmega328P Read More »
Configuring the microcontroller before running it the first time: Fuse bytes : high and low Program them once before you start using the micro-controller Disable JTAG to free up PORTC for normal use Set the correct clock clock option With the hardware set up, run in Command Prompt : For 1MHz internal clock: vrdude -c
Led Blink Code – Hello World Led using atmega16 in C Read More »
Concept The customer’s demands were to develop and build a kit, consisting of a small mechatronic system with educational concept. In particular, he asked for a driverless robot for training purposes abroad. The idea behind this is that our customer needs a kit for sending it to partner schools around the world to help the
Remote Control based Robot using C language Read More »
Concept of Touch LCD LC7981 using ATMega An on/off controller is the simplest form of a temperature control device. The output from the device is either on or off, with no middle state. An on-off controller will switch the output only when the temperature crosses the set-point. For heating control, the output is on when the
On/Off Controller – Interfacing Touch LCD LC7981 using ATMega Microcontroller Read More »
Sometimes it’s tempting to re-invent the wheel to make a device function exactly the way you want. I am re-visiting the field of homemade electrophysiology equipment, and although I’ve already published a home made electocardiograph (ECG), I wish to revisit that project and make it much more elegant, while also planning for a pulse oximeter, an electroencephalograph (EEG),
Multichannel USB Analog Sensor using ATMega48 Microcontroller Read More »
An ATtiny12 controller as a timer and some switching circuitry turns the doorbell off for 10 hours at the same time each day. The string of resistors across the top of the board are series connected to make a 728 Ohm 2 watt resistor. The slide switch is used to switch the circuit between the
Door Chime Privacy Sentry using Attiny12 Read More »
Having done half a dozen V-USB tutorials I decided it’s time to whip up something cool. As USB keyboards were an area untouched. I decided to make a small USB HID keyboard device that types a password stored in EEPROM every time it’s attached. A new password can be generated just by tabbing CAPS LOCK
DIY USB password generator using ATtiny Microcontroller Read More »
A simple, low component count phase locked loop that locks onto and detects the amplitude of an incoming baseband 7 bit Barker code using a switched resistor demodulator that is driven directly by a microcontroller’s output pins. Balanced modulators using resistors and a microcontroller’s output pins. Locking into oncoming Pseudo-noise (PN) stream. Microcontroller modulates its
Barker Code-Locked Loop Synchronous Demodulator using ATtiny2313 microcontroller Read More »
