It turned out to be quite a challenge to find a power supply that meets the above requirement, whereas the following model has proven to be suitable for this application: Aukru Micro USB 5V 3000mA ( Amazon link). In order to prevent the Raspberry Pi’s low voltage warning LED from lighting and the resulting CPU clock reduction, the power supply must be able to sustain a high output voltage of at least 5.3 V at its maximum rated current. The following pictures show the hardware setup from different perspectives.Ī good quality USB power supply rated above 3 Amperes is required for powering the system. The space underneath the Raspberry Pi that has been created by the stand-offs is used for stowing excess cables.Ī fan control circuit board is positioned near Pi’s GPIO header and is attached to the wooden base using a self-tapping screw. A piece of automotive electrical tape seals the gap between the enclosure and the fan. The enclosure itself is left open from the top and the sides in order to allow for the air to flow. ![]() ![]() Pieces of the same kind of cable tie, cut and with holes drilled in it is used to secure the cooling fan on top of the Pi’s enclosure using bolts, nuts and self-tapping screws. The ends of the cable tie are fastened to the wooden base using self-tapping screws. The UPS and both hard drives are stacked on top of each other and secured using a releasable cable tie. The Raspberry Pi’s enclosure is attached to the base using 4 metal stand-offs. The complete hardware is mounted on a wooden base. The hardware setup is described in the following sections.
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