The new bench power supply on on the shelf next to the oscilloscope, moved one row of wires above the tool wall.
Aug 9 2017
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.
I just love flashing lights, I recently got three rotating ones from China :)
Schematic drawing for supply and fuse monitoring module; with AVR AT90S2313.
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.
Schematic drawing for Lync presence (busy) light; with Arduino Uno R3 and navigation LEDs.
Schematic drawing for fuse box with monitoring #2 module.
Schematic drawing for fuse box with monitoring #1 module.
Closeup of Raspberry Pi Zero during GPIO testing. LED is lit, meaning it works!
Aug 3 2017
Testing with Raspberry Pi Zero GPIO output connected to a Darlington driver, success again!
Trying to power the Raspberry Pi Zero with the buck step-down converter, success!
Soldering the pin headers on the Raspberry Pi Zero board.
Mounted the buck step-down converter and verifying the voltage levels.
Backside of the front-panel on the fireman alarm toy.
Aug 2 2017
Mounted a panel buzzer with LEDs in the fireman alarm toy.
Backside of the fireman alarm circuit board, started soldering components.
Started soldering components to the fireman alarm circuit board, buck converter to the left.
Setting up the Raspberry Pi Zero, monitor, keyboard and power connected.
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 mounted on closed in my old apartment.
Apr 12 2009
An LM35 temperature sensor mounted below rack box project in my old apartment.
Feb 8 2009
LM35 temperature sensor poking out of a home-made temperature sensor probe.
Feb 7 2009
LM35 temperature sensor on stripboard with capacitors to reduce signal noise.
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
UniFi 8 port 150W switch mounted on server rack.
Jul 31 2017
UniFi AP-AC Mesh mounted in home office window.
Schematic drawing for warning strobe light controller; with AVR ATtiny2313.
Schematic drawing for electronic light switch; with AVR ATtiny2313.
Junction box for LED lights.
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
Mounted the d-sub connectors and started soldering wires to them in the status panel.
Aug 14 2006
DB37 interface for status panel installed in the rack box project.
Electronics, computers, tech and other geeky stuff by Thomas Jensen aka Hebron
Content licensed under CC BY-SA 4.0.
Made in Norway
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