This is signal system for pantry. It will control climate of pantry to smart house.

It will uses autonomous power system

1. car battery on 12v
2. temporary Li-Ion battary on 12v for charging primary battery
3. internal battery (6V..15V) which will used in case of primary and reserve 12V battery discharged. Used to send power alarm to smart house
4. Auto battary hot switch
5. Control over-discharge of all batteries
6. Provide information of current voltage to controller
7. Small current consumption. I plan to charge main battary once per ~6 month.

It will collect and send next information (incl alarms):

1. Inside flooding alarm
2. Outside flooding alarm
3. Inside humidity level
4. Inside temperature
5. Inside light level
6. Open door alarm
7. Current voltage of all batteries
8. Current battery in use
9. Both 12V batteries discharged alarm

It will automatically switch on air-drier basing on humidity level

It will have air fan system

1. Manual swotch on
2. Manual swotch off
3. Auto switch off after ~20 minutes

It will send all collected information to smart house system using LoRa channel

Project status

Hardware	Status
Supply module	OK
Supply module :: Supply controller	OK
Logic module :: Flooding sensors	OK
Logic module :: Light sensor	OK
Logic module :: display	OK
Logic module :: humidity and temperature	OK
Logic module :: air dryer	OK
Logic module :: LoRa transmitter	OK
Logic module :: Open door alarm	OK
Logic module :: Wakeup button	OK
Air fan module	OK
LoRa receiver and smart house integration	OK

Firmware	Status
Supply controller	OK
Logic controller :: flooding sensors	OK
Logic controller :: light sensor	OK
Logic controller :: display	OK
Logic controller :: humidity and temperature	OK
Logic controller :: air dryer	OK
Logic controller :: LoRa transmitter	OK
Logic controller :: Open door alarm	OK
Logic controller :: Wakeup button and deep sleep mode	OK
Logic controller :: Integration with supply controller	OK
LoRa receiver and smart house integration	OK

Board	Status
Supply board	OK
logic module board	OK
fan board	OK
LoRa Receiver	OK

3D models	Status
Supply board box	OK
Logic model box	OK
Air dryer	OK
Fan box	OK
Fan air intake	OK
LoRa receiver box	no