10068-SR04 PCB

Board Layout
The board schematic itself is trivial. The main feature of the board is the cut-out that allows the ultrasonic sensor controller board components to project through the board, minimising the space required in a board stack.
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10068-SR04 [v1.1] PCB
See here for CAD and CAM files.
Configuration
The SR04 (AJ-SR04 ultrasonic sensor controller) board provides physical support for the AJ-SR04 ultrasonic sensor controller board when mounted in a board stack within a 100 × 68 enclosure.
Board Stacking
The 10068-SR04 board is designed to be used in a 'stack' configuration with an appropriate processor board.

10068-SR04 PCB in Tank Node Board Stack
Further details pending