Zigbee-uppkopplat vattenlarm

Sammanfattning: In this thesis project, a ZigBee-connected water alarm has been constructed. An Xbee 3 ZigBee radio module is programmed to send warnings to an other Xbee 3 ZigBee module if an analogue input falls below the threshold value. An PCB with the Xbee module, resistors, a transistor, LEDs and an battery attachment is manufactured and mounted. A sensor plate is made and attached to the PCB and connected with the analogue pin at the Xbee module. The water alarm works and can operate in large ZigBee networks, even with ZigBee products from other manufacturers. The water alarm can easily be hidden beneath a machine for a long time, it is slightly wider than a battery and with measurements every five minutes, abattery of 220 mAh will last more than 10 years.