Compact open-hardware I/O system with 4 analog inputs, 4 digital inputs, 4 analog outputs, and 4 relay outputs for industrial automation and Arduino.
iot arduino microcontroller firmware electronics modbus open-hardware data-acquisition embedded-systems industrial-automation rs485 daq arduin-uno digital-io analog-io hardware-development relay-control sensor-interface industrial-control voltage-output
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Updated
Aug 10, 2025