Clone this repo or just download the file, upload the file to your Arduino(you might want to adjust some parameters), download the iOS app, you are good to go!
App Code Link: Here
Testflight Link: Here
I used Arduino Uno, DSD Tech HM-10, a 12V water pump, a capacitive soil moisture, a 2 channel 5v relay and a photodiode. I did not have a 12V source, so I used two 1.5V batteries and one 9V battery to power the pump.
| Arduino | Pin 2 | Pin 3 | Pin 7 | Pin A1 | Pin A4 | 5V | GND |
|---|---|---|---|---|---|---|---|
| DSD HM-10 | TX | RX | N/A | N/A | N/A | VCC | GND |
| Relay | N/A | N/A | IN1 | N/A | N/A | N/A | GND |
| Light Sensor | N/A | N/A | N/A | - | N/A | + | Resistor |
| Moisture Sensor | N/A | N/A | N/A | N/A | AOUT | VCC | GND |
- Support more moisture sensors and pumps
- Does not support self-watering yet, only can be turned on/off on the app, maybe add a physical button in the future.
- Instead of Bluetooth connection, using Arduino to host a server to support outside control?
- Final goal: Put it into a PCB and make a 3D self-watering printed pot.