Back Panel Adapter for Raspberry Pi I/O Cards with RS485

The Back Panel Adapter allows Sequent Microsystems Raspberry Pi I/O cards to be installed on the Back Panel. It rotates the GPIO connector by 90° for vertical mounting. It routes +5V (pins 2 and 4), GND (pins 9, 14, 20, 25, 30, 34, and 39), and pin 37, which is used by Sequent cards as an interrupt line. The adapter can be used with any Raspberry Pi I/O card that relies solely on the I²C interface.

FEATURES

• Routes +5V, GND, I²C, and GPIO26 to the Back Panel connectors

• Compatible with all Sequent Microsystems I/O cards

• Can be inserted into any slot on the Back Panel

• Allows mixing of existing I/O HATs with new Back Panel cards

• Can be secured to I/O cards using the included standoffs

• Can be fastened to the Back Panel using the included metal bracket

DESCRIPTION

The Back Panel Adapter for Raspberry Pi I/O Cards contains a straight 2x20 pins male connector, a right angle 2x20 male connector and a 2x4 side mounted pluggable connector.

The straight 2x20 connector plugs into the female connector of the existing Sequent I/O cards by removing the long pin 2x20 which comes with the Sequent cards.

DOWNLOADS

Back Panel Adapter for Raspberry Pi I/O Cards V1.0 Schematic

Back Panel Adapter for Raspberry Pi I/O Cards V1.0 3D STEP file

YOUR KIT

The Back Panel Adapter for Raspberry Pi I/O Cards kit contains the following items:

1. Back Panel Adapter

2. 11mm standoffs, nuts and screws

FAQ

Q: What is the purpose of this adapter?
A: It allows Sequent Microsystems Raspberry Pi I/O cards to interface with the Back Panel, providing power (5V, 24V) and RS485 connectivity.

Q: Which signals are routed through the adapter?
A: The adapter routes 5V, 24V, I²C, GND, and GPIO26 signals between the Raspberry Pi I/O card and the Back Panel.

Q: Is it compatible with all Sequent Microsystems I/O cards?
A: Yes, the adapter is designed to work with all Sequent I/O cards that use I²C communication.

Q: Can I mix old HATs with new Back Panel cards using this adapter?
A: Yes, it enables seamless integration of older HAT-based cards with newer Back Panel-connected I/O modules.

Q: How is the adapter mounted?
A: The adapter can be secured to the I/O card using included standoffs, and fastened to the Back Panel using the provided metal bracket.

Q: Which slots on the Back Panel can I use with this adapter?
A: The adapter can be inserted into any slot on the Back Panel for flexible configuration.

Q: Does the adapter require software changes?
A: No, as long as your card uses I²C for communication, the adapter is electrically transparent and requires no software modifications.