Cabinet

Wiring and board mounting

June 1st, 2015

This post documents how an Arduino is wired and mounted to a diorama box (100 x 110 x 110 mm3) and how an uOLED screen is wired and mounted to a box of the same dimension while connected to the components at the front of the diorama.

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The Arduino board is mounted on a cardboard first (using 3mm nuts and bolts with a ceramic washer for insulation). This can provide its temporary positioning to the back box insert (via hook and loop tape).

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The components are installed through the background sheet, the card casing, and the box insert (as shown in a previous trial).

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The circuit is connected by soldering joints of LEDs’ pins directly to each other and hook-up wires (no circuit or prototype boards used).

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The hook-up wires are inserted directly into the correct pins in the Arduino – hoping that long exposed single-core wire ends should make the connections secure. Spacers (black cardboard on the corners) are added to give these back-end components sufficient room in the box. This is diorama04, which consists of 3 superbright red LEDs (3.0 v – need resistors) and an Arduino (5v), powered by a 9v supply.

Below shows how the uOLED screen is connected to the components in the diorama. Diorama 09 consists only of  the screen and 1 superbright white LED (3.2v with a resistor). The box is powered by a 6v power supply.

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The screen is first mounted onto a board (for rigidity) and the casing.

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The screen is on the same circuit as the LED, which is behind the astronaut. The LED pins are positioned through holes on the bottom of the casing and connected to the main circuit by aluminium foil (this will be replaced by copper conductive wire in the final work).

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The screen is connected to the power supply using jumper wires. This is the view of the casing inserted into the box. Spacers (in the corners) are needed to give the components room at the back of the box. The cardboard insert is not used.

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