This is a power supply box for the OpenAstroTracker project. An input power supply between 12vcc and 28vcc is provided through the "input" barrel jack, and the right voltages are provided to power:

• DSLR (8mm barrel jack)
• Arduino Mega (8mm barrel jack)
• Stepper motors (xh 2.54 connector)
• Raspberry Pi running Astroberry (USB, vcc and GND used only)

The DC/DC Step-Down converters used are MP1584 3A, 1.5MHz, 28V: https://www.haoyuelectronics.com/Attachment/MP1584/MP1584.pdf

Screws to close the box are M3, the two screws on the back side are M4 and can be used to screw it to the 2020 extrusions using T-nuts