[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

[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

[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

[Renzo Mischianti]

Hi moonman,
connect AUX also (without It, you can’t have real feedback from the device) and enable the DEBUG.

Check also the ampere sent to the device, the 1W module wants 700mAh or more.
Bye Renzo

[Renzo Mischianti]

Hi Celeb10,
I think the transistor isn’t sufficient to control a 12v motor, you need more ampere, try to use a MOSFET.
Bye Renzo

[Renzo Mischianti]

Hi Musti,
to use the repeater mode you must activate the relative flag on the device

        configuration.TRANSMISSION_MODE.enableRepeater = REPEATER_ENABLED;

Then you must use ADDH and ADDL to specify from which NETID to which NETID you want to repeat the signal.

But now I think the schema is more simple to understand.

Bye Renzo

[Renzo Mischianti]

Hi Warleysr,
I don’t know because you have this behavior.
Try to remove completely the resistor.
Bye Renzo

[Renzo Mischianti]

Hi Neuron,
Have you already seen the relative articles and tutorials?
If not, go here.
Bye Renzo

[Renzo Mischianti]

Ahh!! I forget to add this tip, E22 has a repeater function and can be very useful in a situation like yours.
Bye Renzo

[Author]

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