avr | Cavelab

Getting started with the AVR microcontroller series

A quick introduction to the AVR microcontroller series with sample schematics of inputs, outputs, serial and some basic circuit drawing.

Temperature and auxiliary sensor (RS-485), AVR

Temperature sensor with serial RS-485 interface. Two additional sensors can be connected using 3-pin headers on the circuit board. Uses an AVR ATmega8 microcontroller.

Temperature and humidity sensor (RS-232), AVR

I rebuilt an existing interface module — to be a stand-alone temperature and humidity sensor, with serial RS-232 interface. Uses an AVR ATmega8 microcontroller.

Temperature and light sensor with signalling LEDs (RS-232), AVR

I rebuilt an existing interface module — to be a stand-alone temperature and light sensor, with serial RS-232 interface and some signal LEDs. Uses an AVR ATmega8 microcontroller.

Car warning lights, with AVR controller

Strobe light controller, using the AVR ATtiny2313 microcontroller. Meant for cars; with front, side and rear warning lights.

Serial interface module, with analog and digital I/O — AVR

Serial (RS-232) interface module; providing 6 analog and 2 digital inputs, and 9 digital outputs. Uses an AVR ATmega8 microcontroller.

Serial port I/O module with 15 inputs — AVR

Serial (RS-232) interface module; providing 15 digital inputs. Uses an AVR ATmega8 microcontroller.

AVR car front lights controller

Lights controller for high beams and fog lights on my Subaru. Uses an AVR ATtiny2313 microcontroller.

Security keypad with programmable PIN — AVR

Keypad with programmable PIN code, two outputs (modes) and protection against repeated incorrect PINs. Uses an AVR ATtiny2313 microcontroller.

Dual channel warning LEDs controller, with AVR

Two channel strobe light controller, using the AVR ATtiny2313 microcontroller. Five flashing patterns that can be selected manually or cycled through. PWM outputs.

Intruder alarm system controller — AVR

A simple intruder alarm controller I build and used in my old apartment. Uses an AVR ATtiny2313 microcontroller.

Emergency LED strobe, AVR controlled

33 high intensity LEDs are controlled with a AVR ATtiny2313 microcontroller. Four flashing patterns that can be set manually or cycle through. Uses an AVR ATtiny2313 microcontroller.

Serial interface for emergency power off — AVR

RS-232 interface module, with voltage measurement. Used to communicate with the emergency power off unit in the Rack box project. Installed inside Rack box status panel. Uses an AVR ATmega8 …

Temperature and light sensor, with LEDs — AVR serial module

Light intensity and temperature sensors; with white, green, yellow, red and blue signal LEDs and a buzzer. RS-232 communication. Uses an AVR ATmega8 microcontroller.

AVR alarm disabling unit for production equipment

Simple unit to silence the audible alarm on a production equipment, uses an AVR ATtiny2313 microcontroller.

Serial port I/O module with 9 in and outputs — AVR

RS-232 interface module, with 9 inputs and 9 outputs. Uses an AVR ATmega8 microcontroller.

Home power consumption measuring unit, with AVR

Measures the power consumption by counting LED pulses from the home fuse box. Measurements can be read via a serial interface, uses the AVR ATtiny2313 microcontroller.

Serial port I/O module with 11 inputs — AVR

RS-232 input module, with 11 inputs. Rebuild of previous RS-485 module. Uses an AVR ATtiny2313 microcontroller.

AVR mood light, 500mA per channel

Turn any RGB LED into a mood light with this controller. Uses an AVR ATmega8 microcontroller.

Light sensor with LED display, AVR controlled

Measures light intensity and shows the value on a LED display, if value passes over/under the set point the output is enabled. Uses the AVR ATmega8 microcontroller.

4-channel electronic switch and voltage regulator

Electronic switch for LED lights, 4 channels, 9 to 24 volts in, 5 volts out. Uses an AVR ATtiny2313 microcontroller.

AVR alarm disabling unit for production equipment with long stop warning

Simple unit to silence the audible alarm on a production equipment, additional warning if not resolved within 30 or 60 minutes. Uses an AVR ATtiny2313 microcontroller.