The push-button allows for more button combinations, like bottom + red button to shutdown Raspberry Pi.
Aug 7 2017
I added a push-button to the bottom of the fireman alarm box.
Inside the fireman alarm with everything wired up.
Aug 5 2017
Niklas also found the inside of the fireman alarm very exciting.
Alexander found the inside of the fireman alarm very exciting.
Stripboard connected; 12V in, 5V out to Rpi. Darlington and pull-ups to the Rpi GPIO pins.
Raspberry Pi Zero with power and GPIO pins connected.
Everything has been connected, power to the Raspberry Pi Zero and GPIO to the stripboard.
Stripboard with voltage step-down, Darlington driver and pull-ups mounted in the box.
Started connecting and wiring 12V from the power jack.
Wiring the front panel; indicators and strobe has common 12V, while ground comes from the Darlington driver.
Testing a GPIO input on the Raspberry Pi Zero, 10k pull-up to 3.3V
The Raspberry Pi Zero mounted in the box, power through a power jack to micro USB adapter.
Backside of the front-panel on the fireman alarm toy.
Aug 2 2017
Mounted a panel buzzer with LEDs in the fireman alarm toy.
The messy inside of the 5V and 12V main fuses for the rack box project.
Aug 1 2017
Main fuses for 5V and 12V supply in the rack box project.
Wiring to the push-buttons and LEDs on the electronic switch module.
Closeup of the voltage regulator mounted on heat-sink in electronic switch module.
Power from the power jack goes through a diode and fuse before reaching the voltage regulator.
Closeup of the AVR ATtiny2313 in electronic switch module.
Inside the electronic switch module.
Electronic switch module with d-sub and power jack connectors on bottom.
Heat-sink for the voltage regulator on electronic switch module.
The push-buttons and dual color LEDs on the electronic switch.
Electronic switch module complete.
Inside the warning lights controller, with wires connected to pin headers.
Optocoupler inside rack box 24V main fuse module, used for detecting burned-out fuses.
Main fuses for 24V, with power and error LEDs. Used to be installed in the rack box project.
Relay and diode soldered to stripboard inside a simple relay box.
A simple relay box with terminal blocks on top.
Small relay inside simple relay box.
Simple relay with with terminal blocks on top.
Output extender module mounted in the rack box project.
Aug 2 2006
LM35 temperature sensor poking out of a home-made temperature sensor probe.
Feb 7 2009
240V 10A relay inside relay box with d-sub connector.
Dec 30 2007
Relay box for power jack, with push button output signal.
Apr 17 2007
Connectors on the backside of the status panel.
Nov 7 2007
Status panel for the rack box project, with everything mounted.
Nov 6 2007
Backside of the front plate for the status panel when done.
The inside of the status panel when it was done.
Front plate of the status panel, image taken April 2007.
Apr 14 2007
A couple of more things mounted on the status panel, image taken January 2007.
Jan 6 2007
About half done with mounting LEDs, buttons and switches in the status panel.
Aug 18 2006
Wiring inside the status panel, already a lot of cables...
Aug 14 2006
Almost done with the left side and top of the status panel.
First LEDs, buttons and switches fitted in the status panel.
Aug 12 2006
Extending the car lights controller with additional outputs.
May 19 2009
Installed the car lights controller under the dashboard of my old car.
Jul 9 2008
Left side of the rack box project, image taken February 2009.
The heartbeat monitor in the rack box project, connected and working.
The heartbeat monitor installed and connected in the rack box project.
Dec 31 2006
Inside the heartbeat monitor module with everything finished.
Circuit board fitted in the heartbeat monitor, now testing the module.
Mounting LCD display, LEDs and switches in the enclosure for the heartbeat monitor.
DIN fail feet on the back of the heartbeat monitor module enclosure.
Dec 30 2006
Made cutouts in the enclosure for the heartbeat monitor module.
Inside of the monitoring module, the small card is a new input board as the first one I made didn't work.
Sep 18 2015
Circuit board with AVR AT90S2313 microcontroller and crystal oscillator.
Sep 17 2015
Circuit boards inside the monitoring module.
Transistors on a stripboard inside the monitoring module.
A small board with two optocouplers inside the monitoring module.
Circuit board with AVR AT90S2313 microcontroller in monitoring module.
Power board with fuses and voltage regulator in the monitoring module.
Life LED on the monitoring module, when flashing it meant the microcontroller was running.
Electronics, computers, tech and other geeky stuff by Thomas Jensen aka Hebron
Content licensed under CC BY-SA 4.0.
Made in Norway
Deployed: 1 hour ago