A single Arduino Uno/Mega can carry up to 14 RS-232 boards. Each board is distinguished by ID, which is set via a DIP switch.
Connect a Modbus energy meter to an Arduino and monitor power consumption via Home Assistant.
Pilot a Push6060 with ATOM and Tail485 with IUFLOW
How to use RS485-based Modbus with a Raspberry Pi 3B+ and an RS485 HAT.
Easily connect Arduino boards at a great distance over RS485 with Visuino.
How to connect GPS, SONAR, sensors, auto pilot units, etc. in ships and boats via NMEA 0183 to Raspberry Pi.
An ESP8266-based, wall-mounted thermostat with touchscreen and Modbus support.
Configuring Node-RED for usage with and our RS485 HAT on a Raspberry Pi.
In this DIY guide, I will show you how to make your own security check system based on Arduino!
Power up your Raspberry Pi and use the RS-485 without unreliable USB connectors and additional adapters.
Combine the Elegoo UNO with the industrial suit Iono Solo to get a rugged PLC to control all your "heavy loads" and industrial equipment.
Use RS-485 Module to control MODBUS relays. You can control them over radio with MQTT commands from Node-RED