Raspberry PI power - jgparker/tipi GitHub Wiki

You have two options to power the TIPI/32K's Raspberry Pi ZeroW. Power the Pi off the console or power the Pi externally. Both options have merits and drawbacks.

Raspberry Pi powered Internally

The first option is to power the Pi off the TIPI/32K, which is powered off the console. This is a very simple configuration as the TIPI/32K will have no wires, and it will operate just fine this way. The main issue is the Pi MUST be properly shut down before power is removed or you risk corrupting the SD flash card. As long as you can remember to shut down the PI before turning off your console, this is a great option.

Options for shutting down the Pi before turning off your console include:

  • Run "CALL TIPI" from basic and then pres 'H' to halt the Pi.
  • From the TIPI's web interface "http://tipi:9900/", go to the 'My TIPI' and 'Shutdown RPi' option in the menu.
  • From the Pi's Linux console (SSH or monitor/keyboard) login as 'tipi' (password ‘tipi’) and execute 'sudo shutdown now'

In all cases, wait for the green LED on the Pi to turn off before removing power.

To connect Pi power to the internal TIPI/console power, plug a jumper wire from pin 2 on the Pi's I/O connector to the +5V power tap on the left rear corner of the TIPI/32K board near the Micro USB connector. A header will need to be added to the Pi's IO pins to accommodate this.

Jumper

Pi powered externally

The second option is to power the Pi externally using either a standard Raspberry Pi power supply, or a cell phone wall wart. This is a great option if you plan to leave your Pi powered all the time. This not only eliminates the need to shut down the Pi, reducing the possibility of corruption, but also allows access to the Pi's file system when the console is off. This will also allow you to better share the TIPI file system with the Classic99 emulator in real time with the console powered off.

Its best to use a good Raspberry Pi power supply with integrated power switch since the Pi has no power switch, and the Micro USB can wear out if cycled too many times.

External

You can use a right angle adapter so the power cord is facing rearward and can be accessed from the rear of the speech housing (Access hole will need to be added to the housing). One that will work is this this adapter.

Adapter

You’ll need to trim the corner of the adapter a little, due to interference with an internal rib, but its very workable. You'll still need to shut down the Pi before removing external power.

For details on how to install your TIPI/32K in the speech synthesizer housing, see the Speech-housing-install page.