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 port I/O module with 15 inputs — AVR](https://blog.cavelab.dev/2008/10/avr-serial-interface-15-in/cover_hua530fc9c2d98f5dffa650cf9ea73b943_191106_860x0_resize_q80_lanczos.jpg)
Serial (RS-232) interface module; providing 15 digital inputs. Uses an AVR ATmega8 microcontroller.
AVR car front lights controller
![AVR car front lights controller](https://blog.cavelab.dev/2008/09/avr-car-front-lights-controller/cover_huc3dd73f00a8e707596ec6cbbac49ded3_108688_860x0_resize_q80_lanczos.jpg)
Lights controller for high beams and fog lights on my Subaru. Uses an AVR ATtiny2313 microcontroller.
Security keypad with programmable PIN — AVR
![Security keypad with programmable PIN — AVR](https://blog.cavelab.dev/2008/06/avr-programmable-keypad/cover_hu28dfbaf1431045fe92ef75a268f77ce4_566384_860x0_resize_q80_lanczos.jpg)
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
![Dual channel warning LEDs controller, with AVR](https://blog.cavelab.dev/2008/04/avr-warning-leds-controller/cover_hu8311e4a1d3ef221710e897c873eee173_146490_860x0_resize_q80_lanczos.jpg)
Two channel strobe light controller, using the AVR ATtiny2313 microcontroller. Five flashing patterns that can be selected manually or cycled through. PWM outputs.