ANAVI Flex is an open source Raspberry Pi HAT for IoT prototyping and home automation applications. It has infrared receiver and transmitter, relay, buzzer, button, RGB LED and UART pins for debugging. The board also supports 1602 LCD display module and up to 5 I2C sensors.
Boatcontrol is an open hardware design for a marine grade SMART/IoT electrical distribution panel and electronics platform (boat) controller.
It’s an I/O breakout board capable of switching 32 onboard latching relays and optionally 32 momentary/latching relays using addon boards switching up to 60A AC/DC 0-400V per circuit.
The "smart" part is provided by either a Raspberry Pi HAT or a Nvidia Jetson (Nano/Xavier NX) either of which can be mounted on the board.