[Renzo Mischianti]

Hi john,
yes, the pump work in a specified time period, and It start if tank is not full and stop if it’s full.
Bye Renzo

[Renzo Mischianti]

Hi John,
you can find a version with RTC here.

You must add an i2c RTC by sharing the pin of OLED display.
But It’s all undocumented.

I Attach the preview.
Bye Renzo

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[Renzo Mischianti]

Hi Musti,
I write an article on how to manage the microcontroller deep sleep with E32, and you can find It here

Ebyte LoRa E32 device for Arduino, esp32 or esp8266: WOR (wake on radio) microcontroller and new WeMos D1 mini shield – Part 7

but for the management of E22 you can get all the information here.

Ebyte LoRa E220 device for Arduino, esp32 or esp8266: manage Wake On Radio and sends structured data – 5

Practically, when your E22 is in sleep mode, you must use the AUX pin (managed bye the E22) to wake up the microcontroller also.

If you need more information write here.

Bye Renzo

PS: I also started writing the specified section for esp8266, esp32, stm32, Arduino, and Arduino SAMD about the sleep mode.

[Renzo Mischianti]

Hi,
I think the frequencies is only for the pin PWM and you can use 50K.
Bye Renzo

[Renzo Mischianti]

Hi Moonman,
I think the best solution is to use a battery like 18650 and a step up booster to get 5v.

Bye Renzo

[Renzo Mischianti]

Wait for version 2.3.3, the problem is fixed.
Thanks for the help to fix It Renzo

[Renzo Mischianti]

I’ll fix It in the future release, for memory optimization I use uint8_t but the Wire library use int and this generates the issue.
Bye Renzo

[Renzo Mischianti]

Good work Rodyeo!
Bye Renzo

[Renzo Mischianti]

Perfect!
Thanks for the feedback!
Bye Renzo

[Renzo Mischianti]

Hi Joppnl,
I tested the connection with this sketch

#include "Arduino.h"
#include "PCF8574.h"
#define SDA D2 // D2=GPIO4
#define SCL D3 // D3=GPIO0

// Set i2c address
PCF8574 pcf8574(0x38, SDA, SCL);

void setup()
{
	Serial.begin(115200);

	// Set pinMode to OUTPUT
	pcf8574.pinMode(P0, INPUT);
	pcf8574.pinMode(P1, INPUT_PULLUP);

	pcf8574.pinMode(P5, OUTPUT);
	pcf8574.pinMode(P6, OUTPUT, LOW);
	pcf8574.pinMode(P7, OUTPUT);

	pcf8574.begin();
}

bool startVal = HIGH;

void loop()
{
//	pcf8574.digitalWrite(P0, HIGH);
//	delay(1000);
//	pcf8574.digitalWrite(P0, LOW);
	byte val = pcf8574.digitalRead(P0);
	Serial.print("PIN 0: ");
	Serial.println(val);
	val = pcf8574.digitalRead(P1);
	Serial.print("PIN 1: ");
	Serial.println(val);

	pcf8574.digitalWrite(P7, startVal);
	if (startVal==HIGH) {
		startVal = LOW;
	}else{
		startVal = HIGH;
	}
	delay(3000);
}

It works correctly without any change.

I think there is an issue with your code. Try to change the define like so:

#define SDA D2 // D2=GPIO4
#define SCL D3 // D3=GPIO0

Bye Renzo

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[Renzo Mischianti]

Hi Joppnl,
other people tell me about that problem, for now, seems that a

  Wire.begin();   

at the beginning of the setup function fix the problem.
But I must investigate.

Bye Renzo

[Renzo Mischianti]

Hi 1n5an1ac,
as you can see in the table attached extracted from the datasheet, the limitation of the 9600 baud rate is applied only when you are programming the device.
The transfer function works correctly.
Bye Renzo

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[Renzo Mischianti]

Thanks to you for helping to find the solution.
Bye Renzo

[Renzo Mischianti]

Hi 1n5an1ac,
Sorry, but I don’t know why but your topic was going on spam.
But I’m happy that you have found the solution.
Bye Renzo

[Renzo Mischianti]

Hi Rodyeo,
I check the 2.0.4 version of CameraWebServer, and I put on working with these changes.
In the main CameraWebServer.ino I add these lines.

const int pwmfreq = 50000;     // 50K pwm frequency
const int pwmresolution = 9;   // duty cycle bit range
ledcSetup(config.ledc_channel, pwmfreq, pwmresolution);  // configure LED PWM channel
ledcAttachPin(4, config.ledc_channel);            // attach the GPIO pin to the channel

after the setting of camera_config_t config; structure

And in the file app_attpd.cpp after the include I add these lines:

//
// LED Illuminator
//
#define CONFIG_LED_ILLUMINATOR_ENABLED
#define CONFIG_LED_LEDC_PIN 4
#define CONFIG_LED_MAX_INTENSITY 255
//#define CONFIG_LED_LEDC_LOW_SPEED_MODE
// CONFIG_LED_LEDC_HIGH_SPEED_MODE is not set
#define CONFIG_LED_LEDC_TIMER LEDC_TIMER_0
#define CONFIG_LED_LEDC_CHANNEL LEDC_CHANNEL_0
// end of LED Illuminator

I have also attached the modified files.

Bye Renzo

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