As we have learnt in previous tutorials that the XBee module can act as a Coordinator, Router or an End device but it need to be configured to work in desired mode. So before using the XBee modules ...

Module accepts commands by waving hand over the photocell, or pressing push button switch (depending on module configuration).

The Micro SD Card module has 6 pins; those are GND, VCC, MISO, MOSI, SCK, and CS. All the pins of this sensor module are digital, except VCC and Ground. -> GND is the ground pin of the micro sd card ...

The Raspberry Pi compute module is a powerful piece of hardware, especially for the price. With it, you get more IO than a normal Pi, plus the ability to design hardware around it that’s specifically ...