Communication between devices is crucial in many use cases, i.e. to transmit sensor data or remote-control devices such as garage doors or electrical outlets.
Wireless
The most common way today uses wireless technologies such as WiFi, Bluetooth, or dedicated senders and receivers that operate in one of the free and legally usable frequency ranges for Short Range Devices (SRD).
Wired
In certain situations, wireless communication may neither be possible nor desireable.
When exceptionally reliable or secure connections are needed, and when the devices are in physical proximity, a wired connection may be the way to go, such as simple serial interfaces or more sophisticated Ethernet network connections that add a device to a LAN.
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(content created Apr 17, 2024)