Shut the Gate....!!
Having survived (barely) the festivities of the last few days


, I managed to get my shaky hands and fogged up brain to do a little work on the model......
Before I close up the fuselage for good, I need to get the wiring and circuits worked out and installed.
As already mentioned, this model will be displayable in two configurations; Flying and Landed.
Each configuration has different lighting set ups. These are outlined below....
Flying configuration:
Searchlights: ON
Landing Lights: ON
Starboard Engine: ON
Port Engine: ON
Wing Tip Lights: ON
Landed configuration
Searchlights: Off
Landing Lights: ON
Starboard Engine: ON
Port Engine: Off
Wing Tip Lights: ON
Each configuration has a different input point for power though. In the flying configuration, the power enters the bottom of the fuselage, and when landed, the power input is on the port engine.
I am no electronics expert, but I designed a simple circuit to accomodate the above setups....
In the schematic above,
LED Group 2, contains all the LED's which are ALWAYS on, in
both configurations.
LED Group 1, contains the LED's that will be OFF in the landed configuration.
I inserted a diode (
D0) between the 2 power inputs, (
Input A and
Input B.)
This diode acts as a 'gate', to control the direction of the power flow in the circuit. (The 'arrow' of the symbol for the diode shows the (only) direction that power can flow through it.)
So, if the power is coming from
Input B, the power runs directly through
LED Group 1, and also through
LED Group2, via the diode, to the negative side of the circuit.
However, if power is applied to
Input A, the power will run through
LED Group 2 to the negative side, but NOT through
LED Group 1, as the power cannot pass through the diode to light
LED Group 1.
In the schematic above, for clarity, I have ommited the required resistors for each LED set.
LED Group 1, contains a total of 3 seperate LED's (plus resistors) and
LED Group 2 contains 10 seperate LED/resistor sets.
I am hoping to finalize the wiring tonight and get it all installed. I've really gotta be clear-headed for this task, as I really do not want to blow any LEDs at this stage.........
I will let you know of the outcome ....... :nailbiting::nailbiting:
