Hello,

I am using Ceech board (LTC4079) with 6v pannel

I have tried to adjust potentiometer but I am not sure to well understand the values :
Vcc = 3.28V
Charge current = 0.00mA
Solar cell voltage = 5.56V
Battery voltage = 4.03V
CHRG = 542

I read CHRG = 542 but Charge current = 0.00mA
If I turn a bit the portentiometer I have :

Vcc = 3.28V
Charge current = 79.91mA
Solar cell voltage = 4.95V
Battery voltage = 4.07V
CHRG = 0

What I understand is that charge current come from solar cell and CHRG is amount send to battery, am I right ?
Is it normal to nat have a positive value in both ?

ps: for now with full wires (power and network) it looks like http://jodaille.org/snapshots/
a daily timelapse and meteo/temperature sensors

Hello,

maybe I am the only one, for weeks I receive email notifications twice a day, at the same time.

Hello,

now it is charging \o/
Vcc = 3.28V
Charge current = 71.65mA
Solar cell voltage = 4.71V
Battery voltage = 3.97V
CHRG = 0

it was Battery voltage = 3.90V few minutes ago

Hello,

maybe I am the only one, for weeks I receive email notifications twice a day, at the same time.

Hello,

few years ago I was searching a technic to measure water level in a small tank.

I have read somewhere that some motorbike have a gaz tank that use a "capacitance level meter".

I have never succeeded but you may have a try.

I have just found an example to illustrate:

https://www.hackster.io/team-protocentral/non-contact-capacitive-liquid-level-sensing-using-fdc1004-9333c7

Hello,

I have not used SHT30 yet, but as an I2C device it should not be a problem to wire it.

On Arduino UNO: SDA is A4 and SCL is A5.

I2C is not designed for "long wires" (not sure maybe <1m), you may have to put your Arduino near your SHT30.

The ethernet module and NRF24L01 use SPI bus, did you succeed to make them both working on the same Arduino ?

I have just found that another kind of detection exists: optical

cf: https://www.yoctopuce.com/EN/article/how-to-build-a-rain-sensor

I wonder how hard is it to be able to reproduce it.

Hello @TheoL ,
I better understand now, you are right this kind of sensor could be useful
I imagine that you have already found this page: https://www.avdweb.nl/arduino/measurement/rain-detector
It seems to use the same sensor. Reading it, I have just understand that the bottom was for heating, nice.

Hello @TheoL

I have not good experiences with rain sensors,
the only one that "works", does not cost an arm and relatively simple to make it to use a rain bucket counter.

I have found that wireless ones (radioà433Mhz) were twice cheaper than "wired" one,
and you can easily "wirefy" by juste soldering two wires on the "magnetic switch" and cutting a trace or two. cf: bad picture from years ago https://raw.githubusercontent.com/Jodaille/LyceeDesAndaines/master/JaugePluieInterruption/Soldered_wires_for_contact.jpg

Thank you @rvendrame ,
it works, I attach a Ceech's schema, using D4 instead of D3

Hello @Yveaux, hello @rvendrame: thank you.

the led is still alive

With the sketch , I can see the led blinking if it is wired between gnd and d3.

@rvendrame I should miss something because the led stay off with your instructions.

Maybe @ceech will see this my SOS

Hello,

I would like to use the mosfet of the Ceech board: ATmega328p board w/ NRF24l01+ socket LTC4079

In the doc is indicated that it is wired do digital 3.
I have modified the "blink without delay" sketch

const int MOSFET = 3;
int loadState = LOW;
unsigned long previousMillis = 0;
const long interval = 2000;

void setup() {
  // put your setup code here, to run once:
  pinMode(MOSFET, OUTPUT);
  digitalWrite(MOSFET, HIGH);
  Serial.begin(9600);
}

void loop() {
  unsigned long currentMillis = millis();

  if (currentMillis - previousMillis >= interval) {
    // save the last time you blinked the LED
    previousMillis = currentMillis;

    // if the LED is off turn it on and vice-versa:
    if (loadState == LOW) {
      loadState = HIGH;
    } else {
      loadState = 0;
    }

    // set the LED with the ledState of the variable:
    digitalWrite(MOSFET, loadState);
    Serial.print("state: ");Serial.println(loadState);

  }

}

I don't understand how it works, I have tried to measure continuity with a voltmeter, I have tried to wire a led between vcc, cuting the gnd with the mosfet without success.

Does anyone would be explain how I can use it ?

I would like to make an electrical barrier to protect my beehive from vespa velutina using a mosquito racket :

Hello Ceech,

your board is used with six ds18b20 sensors to monitor a hive:

http://www.dheaf.plus.com/monitor/monitor_v2.htm