WiFi signal stength and BME250 air pressuse on a LCD1602

[RuudMR]

Hello, Nice project, but i have a question? How is it possible to display the value of the WiFi field strength, and signal quality And from the BME250 sensor the value of the airpressusure on a LCD1602 screen. With a LCD2004 screen i see the information. Also with a OLED screen. But a OLED screen is after a few months burned in with the displayed values and therefor not usable for continue use. Therefor i have choosen for the LCD1602. (no room for a LCD2004) But (for now), without the WiFi fieldstenght , signal quality and the BME250 airpressure. Is there a solution for.
I can program the ESP8266 if nessesarry? (i am a Arduino teacher) but how? Greetings from the Netherland.

[pjgueno]

Hi, You can add a screen or modify some screens.

Line 3727:

display_lines[2] = std::move(tmpl(F("Signal: {v} %"), String(calcWiFiSignalQuality(last_signal_strength))));

Line 3705

if (p_sensor != "") { display_lines[line_count] = "Pres.: "; display_lines[line_count] += check_display_value(p_value / 100, (-1 / 100.0), 1, 6); display_lines[line_count++] += " hPa"; }

These are the lines for the 2004.

Maybe add a screen: uint8_t screens[9];

And then in the switch/case for 1602:

case 9:
            display_lines[0] = std::move(tmpl(F("Signal: {v} %"), String(calcWiFiSignalQuality(last_signal_strength))));
                        display_lines[1] = "Pres.: "; display_lines[line_count] += check_display_value(p_value / 100, (-1 / 100.0), 1, 6); display_lines[line_count++] += " hPa"; 
            break;

Add also:

    if (cfg::display_device_info && cfg::bmx280_read && p_sensor != "") {
        screens[screen_count++] = 8;
    }

You will have to flash with Platformio.

[RuudMR]

pjgueno, nice to hear, i d'know that the source als was free for editting. I go looking for it and try it out. Thanks.

Result: IT WORKS!!! I have found the right software "airrogt-firmware.ino" And change the SW as you have advice....

Add at about 3680 if (cfg::display_device_info && cfg::bmx280_read && p_sensor != "") { screens[screen_count++] = 8; } Add at about 3830 case 8: display_lines[0] = std::move(tmpl(F("Signal: {v} %"), String(calcWiFiSignalQuality(last_signal_strength)))); display_lines[1] = std::move(tmpl(F("Pres: {v} hPa"),check_display_value(p_value/100, -1, 1, 6))); break;

AND changed because of the LCD driver lcd_1602->begin();// lcd_1602->init(); AND lcd_2004->begin(); // lcd_2004->init();

The problem why it not was working after compiling and download was that the Software update flag was ON. The ESP8266 goes direct updating the software and stops working. Now it is switch OFF.

It also works with the ESP8266 version i use it most of the time the ESP8266 version 2.7.4.

pjgueno, thanks for the input.