@Ron said in Capacitive Soil Moisture Sensor:
@Puneit-Thukral Thanks. I am not quite sure, so correct me please if I am wrong, but I think I am already using the MiniCore bootloader with platformIO. Or do I need to configure to explicitly use the MiniCore bootloaders? Also I have set BOD to disabled as I read somewhere that no BOD can also save battery.
hi
I'm not sure, but I believe I'm already using the MiniCore bootloader with platformIO. Please tell me if I'm incorrect. Is it necessary to set the MiniCore bootloaders explicitly?
Here is the sketch if anyone can help out.
#include <SPI.h>
#include <MySensor.h>
#define CHILD_ID_LIGHT 0
#define LIGHT_SENSOR_ANALOG_PIN 1
#define NODE_ID 9
int BATTERY_SENSE_PIN = A2; // select the input pin for the battery sense point
unsigned long SLEEP_TIME = 30000; // Sleep time between reads (in milliseconds)
MySensor gw;
MyMessage msg(CHILD_ID_LIGHT, V_LIGHT_LEVEL);
int lastLightLevel;
int oldBatteryPcnt = 0;
void setup()
{
// use the 1.1 V internal reference
//analogReference(INTERNAL);
gw.begin(NULL, NODE_ID, false);
// Send the sketch version information to the gateway and Controller
gw.sendSketchInfo("Soil_Moist_Sensor_grb", "1.15");
// Register all sensors to gateway (they will be created as child devices)
gw.present(CHILD_ID_LIGHT, S_LIGHT_LEVEL);
}
void loop()
{
int lightLevel = (1023-analogRead(LIGHT_SENSOR_ANALOG_PIN))/10.23;
Serial.println(lightLevel);
if (lightLevel != lastLightLevel) {
gw.send(msg.set(lightLevel));
lastLightLevel = lightLevel;
}
// get the battery Voltage
int sensorValue = analogRead(BATTERY_SENSE_PIN);
Serial.println(sensorValue);
// 1M, 470K divider across battery and using internal ADC ref of 1.1V
// Sense point is bypassed with 0.1 uF cap to reduce noise at that point
// ((1e6+470e3)/470e3)*1.1 = Vmax = 3.44 Volts
// 3.44/1023 = Volts per bit = 0.003363075 - changed without ref volt
float batteryV = sensorValue * 0.00305734;
int batteryPcnt = sensorValue / 10;
Serial.print("Battery Voltage: ");
Serial.print(batteryV);
Serial.println(" V");
Serial.print("Battery percent: ");
Serial.print(batteryPcnt);
Serial.println(" %");
if (oldBatteryPcnt != batteryPcnt) {
// Power up radio after sleep
gw.sendBatteryLevel(batteryPcnt);
oldBatteryPcnt = batteryPcnt;
}
gw.sleep(SLEEP_TIME);
}
@nca78 I don't use ATAES132A. I put it in just in case I wanted to invest some more time using it.
I now just use SimpleEncryption, it's secure enough for my purpose atm.
(since the area I live in uses KAKU a lot, an insecure 433MHz lightswitch, I don't think anyone would be bothered to hack my temperature sensors. I found 163 433Mhz devices when I left domoticz logging for a couple of days.)
