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8 Channel I2C Interface Relay Module for Arduino, Raspberry PI, Home Assistant YAML, ESP32 3.3V 5.0V 10A Peak LED Indicator for Each Relay Channel Control AC DC Voltage - I2C I/O pin
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DFRobot Gravity 1 or 2Channel I2C to 0-2.5V VCC 4-20mA DAC Module for Arduino ESP32 Raspberry Pi STM32 automation control - AliExpress
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pi 3 - Protect raspberry i2c pins with general ground connection with Arduino - Raspberry Pi Stack Exchange
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