Imported from GitHub: trihome/RasPi_PiFA · commit 6da94cb · license CC-BY-SA-4.0

Description

IO interface board for Raspberry Pi "HAT".

README

PiFA 8xy

A prototyping board "HAT".

GPIO pins can be freely selected.

Schematic

Note

Please import this library before using this repository. https://github.com/trihome/KiCad_MyLibrary

Spec

• 4 isolated inputs and 4 isolated outputs.
  • J3(Y) is Output, and J5(X) is Input.
  • Connect these connectors to the Raspberry Pi Pins.
  • J3 and J5: B4B-XH-A(LF)(SN)
  • Raspberry Pi Pins: QI(2550)connectors
• Supply 24V power to J7.
  • J2 is Input / Output for FA(24V)
  • Recommended Terminal block and Cables or QI(2550)connectors.
• Selectable Sink(NPN) / Source(PNP) : J1(Input), J4(Output)
  • U6: Transistor array, you have to choose.
    • J4 = Sink(NPN)
    • J4 = Source(PNP)
• I2C-bus voltage-level translator (3.3 to 5 V)
  • U1: AE-PCA9306
  • I2C Output connector
    • J6: Pin Header (5V)
    • J8: GROVE (5V)
• RTC
  • U4 : DS1307+
  • BT1: CH243-2032LF and CR2032

Example of use

Terminal block

• Terminal block
• Cables

Stack

If you need more I/O ports, you can increase them by stacking boards.

• The board sandwiched in the middle is Grove Base Hat for Raspberry Pi
• DIN rail bracket: example