4.4.1 Sensor Node Arrangement
As shown in Figure 4-1, the ATxmega256A3BU based sensor node is realized using XMEGA-A3BU Xplained and Microchip RN2483 LoRa technology mote board.
On the RN2483 LoRa technology mote board, only the 3V battery source and the RN2483 LoRa transceiver module are being used by the sensor node.
Note: To prevent the rest of the circuitry
on the RN2483 LoRa technology mote board from consuming the battery power, the
on-board PIC18LF45K50 MCU is put in power down mode and the LCD module is turned
off.
Table 4-1 shows the essential connections required between the RN2483 LoRa technology mote board and the XMEGA-A3BU Xplained board.
| RN2483 LoRa Technology Mote | XMGEA-A3BU Xplained |
|---|---|
| UARTRX (PIN5 of Header J4) | TXD (PIN4 of Header J1) |
| UARTTX (PIN6 of Header J4) | RXD (PIN3 of Header J1) |
| +3.3V (PIN11 of Header J4) | P3V3 (PIN10 of Header J1) |
| GND (PIN12 of Header J4) | GND (PIN9 of Header J1) |
| MCLR (PIN1 of Header J6) | PIN2 of Header J2 |
Figure 4-7 shows the sensor node arrangement using XMEGA-A3BU Xplained and RN2483 LoRa technology mote board.
