This sketch is supposed to test Dragino RS485-BL (Modbus master), using an Arduino UNO as a Modbus slave. The Dragino will be configured to read data stored in Arduino variables (an array), when ...
This library is designed to control an MT8816 analog crosspoint switch using an MCP23017 GPIO expander. The MT8816 is a 16x8 crosspoint switch array, and this library provides an interface to connect ...
I just received my RC522 RFID reader and made this simple Arduino access control system that uses the reader, a buzzer for the alarm and a relay shield for the security system. The relay can be used ...
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