Figure : The MIT Aging chamber Generation One with the main components identified. Excluded from the image are a control laptop, Arduino humidity controller, and a darkening curtain that is placed on top of the chamber when the chamber is running. The LED lamp is ring-shaped and has a conical shade to produce even illumination to the 4 × 4 inch 2 sample holder area. The humidity is controlled by evaporating water with a fan, and additional fans even out the humidity and temperature across the chamber. Two lamp-camera-sample-holder combinations fit into the chamber that is sealed with an insulation band and clips.