User's Manual

WA020100 - Smart Irrigation Controller
UMAOC001 Rev G
USER MANUAL
Page 25 of 33
9 MAINTENANCE AND TECHNICAL SERVICE
9.1 Battery replacement
If the device is going to be switched off for a long time it is recommended to configure the LoRaWAN Parameter
Time to update status as 100 (only transmission when a change occurs in vale outputs) and to program the
irrigation timetable without any operation. In this way the current consumption is minimum and battery life is
preserved.
In case of battery replacement, replace them by batteries with same features (voltage, capacity, maximum
output current, etc)
Procedure for battery replacement:
1. Disconnect Watersens from external sensors and electrovalves
2. Remove screws from housing
3. Remove housing from the cover. Be careful with internal antenna cable and wire connectors
4. Remove old batteries from holders and put new batteries
5. Make all connections and ensure all well done.
6. Ensure the O-ring is placed correctly to avoid humidity inside the housing in wet environments.
7. Fit the housing and the cover and screw them
8. Date and time were lost. Configure time and date through downlink frame type 2 (time and date setup)
or via NFC with Watersens app (select synchronize date-time)
9.2 Firmware update
Watersens can be updated with last firmware version to get new features or to solve any deviation detected in
previous versions. For this purpose, it is necessary:
• Last firmware Watersens version can be downloaded from web
www.aonchip.com
• Software to download firmware to Watersens:
https://www.st.com/content/st_com/en/products/development-tools/software-
development-tools/stm32-software-development-tools/stm32-programmers/flasher-
stm32.html
• USB to TTL cable FTDI TTL-232R-3V3 or similar:
https://www.ftdichip.com/Support/Documents/DataSheets/Cables/DS_TTL-
232R_CABLES.pdf
Procedure for firmware update:
1. Disconnect Watersens from external sensors and electrovalves