1-to-4 HDD Stackable Raspberry NAS with PSU v1

thingiverse

This appears to be a set of instructions for assembling a Raspberry Pi (RPI) enclosure, specifically a case designed for the RPI and hard drives. It includes details on how to connect power supplies, hard drive cables, and other components. Here's a summarized version: **Assembly** 1. **Power Supply**: * Connect the power cord through a small front hole. * Connect the negative terminal to the PSU’s N-terminal from inside. * Pass the positive (brown or red) wire through the switch hole and connect it to one of the terminals on the back of the switch. Solder a blue wire to one of the bullet terminals, and a red wire to the other one. 2. **Pass the wires through specific holes**: * Pass the blue wire from outside to inside through the internal power stack hole. * Pass the red wire from outside to inside through the external power stack hole. 3. **Connect the wires**: * Connect the blue wire to the negative terminal on the PSU and the red wire to the positive one. 4. **Secure the PSU**: * Use 2xM3 4mm screws to secure the PSU on the bottom plate. 5. **Test Power Supply**: * Use a voltmeter (set to more than 6V) to test if there are any shorts. * Connect the power cord, switch on the switch, and ensure the LED lights up. * Adjust the voltage using the small tuning screw near the LED. 6. **HDD Levels**: * Unmount the SATA plug adapter (clipsed) to extract the PCB. * Solder a red wire on a male bullet and a blue wire on another male bullet. * Pass the wires through specific holes and solder them in place on the PCB. * Secure the female bullets with hot glue or melted PLA/ABS. 7. **RPI Level**: * Solder a red wire on a male bullet and a blue wire on another male bullet. * Pass the wires through specific holes. * Crimp dupont connectors on the wires. * Connect the wires to the RPi GPIO. * Connect the USB plugs and network. **Possible Improvements**: 1. **Add Status LEDs**: Add power, system status (starting/stopping/started/stopped), and OMV process status LEDs. 2. **High Voltage Fuse**: Add a high voltage fuse for safety. 3. **GPIO Push Button**: Add a graceful reboot/shutdown GPIO push button with short/long press functionality. 4. **Redesign HDD Level**: Redesign the HDD level with a tray for better organization.