John Robson’s Enterprise NX-01

jrobsonnx-001

This model was constructed using the ‘Polar Lights’ kit, measuring 26” long with a disk diameter of 15.5”. This gave plenty of room to electronically bring the model to life, using numerous electronic components, most of which I had to hand. The plug to connect the upper and lower disks, was made from a header pin strip and the socket from a cut down IC socket, both finished with molded auto panel filler and painted. To prevent light from the lamps penetrating through the plastic, the upper and lower disks, together with the window sections, were first given two coats of matte black spray paint, The slots for the port and starboard upper scanners were cut out and then all parts were sprayed with the appropriate grey. The remaining colours were then added.

The kit display base was discarded and replaced with a PVC instrument case. The wiring from the control unit to the NX-01, is dressed through the forward mounting aluminum tube and secured with threaded inserts and large nuts. The lower disk has 5 x 12v DC miniature lamps to provide the overall disk illumination, together with one central 12 V 8 Watt lamp. The forward and upper scanning sensors are bar Led units connected to an 8 sequence flashing circuit. A timing circuit in the control box provides a pulse every 1.5 minutes, to change the flash sequence. The engines comprise six Leds each. These flash in a rotary sequence with a central high intensity led that pulses in time with a high voltage blue neon tube, running down the inside of the engine. When in ‘Warp Speed’ mode, the engine flash rate doubles. Other Leds are used for the pulsing rear thrusters and pulsing navigation lights.

The control box comprises a regulated power supply, which provides the 12 V DC plus lower voltages for various other circuit boards. It is powered by a 16V AC 2 Amp plug-pack. The control box provides timed sound effects for: alert, attack and scanner sensor detection of hostile craft, as well as for the firing of the forward and aft photon torpedoes. It also provides the pulses for the engines, navigation lights, photon torpedoes (super-bright 3mm Leds) and sound effect circuits. The control unit can be remotely controlled from an IR remote control, or set for automatic sequence. The automatic sequence takes 12 minutes, resets and starts over. During commissioning, it was found that the high voltage neon pulses were interfering with the IR receiver. Earthed aluminum foil, wrapped around the offending wires, remedied the problem.

John Robson

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