The Pi Power Board is a Raspberry Pi controlled power board that allows you to deliver 12V to 16 DC jacks
Add the following to connect your devices
These 16 channel relay boards are cheap and readily available. I have made allowances for this board to be mounted and powered. It runs off 12V so there is a connector to allow powering of it. By using this off the shelf device it will reduce the production price of the Pi Power Board
The ATX power supply is perfect choice for this design it has 12V, 5V and 3.3V. Also with its control and signal wires we can fully control it from the Pi.
When power is connected to the ATX, and the rear switch is turned on, it will immediately send power to the 5V standby wire (Purple). We will be using this to power the Pi, and give a GPIO access to a transistor that will control the main power wire (Green). With the power wire shorted to earth the PSU will spring to life, outputting the 12V we need. At the same time the power good (Grey) will link up with another GPIO and can be used to monitor if the PSU is running as it should
So What is the Pi Power Board ?
Watch the board in action
Want a more technical overview?
The design right from the start was to mount everything into a standard PC case, preferably a Mini ATX computer Case, but any size PC case will do.
With that in mind I have placed mounting holes that match standard PC case holes, allowing mounting into a standard PC case, along with the ATX power supply making it a self contained device. I have also allowed extra holes so a Pi or another PCBs can be mounted on top also. Just stack your Pi on top of the power board and it will be fully mounted and self contained