Posts tagged: electronics
Electric heater and timer controller — AVR
Controls an electric heater, and has a simple 15 minutes timer. Uses an AVR AT90S2313 microcontroller.
Multi-purpose AVR module
Monitors the Rack box status panel, IR sensor, porch door and turns off lights. Uses an AVR ATtiny2313 microcontroller.
Multiplexer output extender
Get more digital outputs on your I/O device with a multiplexer, 3 outputs turned into 7.
Sound alarm control unit — AVR module
Simple unit to control three sound signals; beep, siren and buzzer. Uses an AVR ATtiny2313 microcontroller.
Fan controller with LCD — AVR powered
Reads temperature and controls a fan using a PWM output, fan and alarm set point can be adjusted and is shown on a LCD. Uses an AVR ATmega8 microcontroller.
Emergency power off controller — controlled by 555 timers
Emergency stop controller for the rack box project. Uses two 555 timers.
Bilge pump controller for my dad's sail-boat
Auto and manual override control of a boat pump that I built for my dad’s sail-boat.
Controller for lights and relays — AVR driven
Control three lights or relays, with toggle switches and status LEDs. Uses an AVR ATtiny2313 microcontroller.
Module heartbeat monitor, 6 inputs — AVR
Detects and alerts if any of the monitored modules goes silent; meaning their heartbeat stops. Uses an AVR ATtiny2313 microcontroller.
Monitored fuse box, 4 channels
A monitored fuse box that used to be installed in my rack box project, with 4 channels and 8 fuses.
Mute and light controller for the Rack box — AVR module
Controlling mute and lights in the rack box project. Uses an AVR ATtiny2313 microcontroller.
Stack lights and horn controller — with AVR
A control module for a green, yellow and red stack light, and signalling horn. Uses an AVR ATtiny2313 microcontroller.
Monitored fuse box, 6 channels
A monitored fuse box that used to be installed in my rack box project, with 6 channels and 12 fuses.
Power supply and fuse monitoring module, AVR
Simple monitoring module for the essentials in the rack box project; power supplies, fuses and communication. Uses an AVR AT90S2313 microcontroller.
Simple IO tester with 6 channels
A simple box with LEDs and switches to test digital inputs and outputs.
Wooden 2-post open rack frame
My first “rack” was made of wood. It monitored, meaning displayed and alerted, on some metrics on my Linux server. And controlled a few lights and the alarm system in my room. I really enjoyed making …
Parallel port I/O module
Get 5 inputs and 8 outputs from a computer printer port using only a few transistors and resistors.
AVR production line stop alarm
Simple alarm circuit to monitor up to eight inputs, from e.g. production equipment. If any inputs are triggered an alarm is sounded. Uses the AVR AT90S2313 microcontroller.