Uploading to KC868-A6

[Vulcan]

I am embarrassed to ask this and have flashed many ESP32s with far more complicated code but I am just trying to load one of the demo sketches provided by KinCony just to test my 868-A6. 
 I get this:

Connecting.....Traceback (most recent call last):
  File "esptool.py", line 34, in <module>
  File "esptool/__init__.py", line 1004, in _main
  File "esptool/__init__.py", line 790, in main
  File "esptool/loader.py", line 1108, in flash_set_parameters
  File "esptool/loader.py", line 406, in check_command
  File "esptool/loader.py", line 375, in command
  File "esptool/loader.py", line 307, in read
StopIteration
[94734] Failed to execute script 'esptool' due to unhandled exception!

I am using "cu.usbserial 14620" drivers and they work with my ESP32's. Can anyone tell me what might be wrong? 
The script is: 
Blink led on PIN0
by Mischianti Renzo <http://www.mischianti.org>

I have a lot to learn


/*
Blink led on PIN0
by Mischianti Renzo <http://www.mischianti.org>
https://www.mischianti.org/2019/01/02/pc...asy-usage/
*/
#include "Arduino.h"
#include "PCF8574.h"
// Set i2c address
PCF8574 pcf8574(0x24,4,15);
void setup()
{
Serial.begin(115200);
//delay(1000);
// Set pinMode to OUTPUT
pcf8574.pinMode(P0, OUTPUT);
pcf8574.pinMode(P1, OUTPUT);
pcf8574.pinMode(P2, OUTPUT);
pcf8574.pinMode(P3, OUTPUT);
pcf8574.pinMode(P4, OUTPUT);
pcf8574.pinMode(P5, OUTPUT);
pcf8574.digitalWrite(P0, HIGH);
pcf8574.digitalWrite(P1, HIGH);
pcf8574.digitalWrite(P2, HIGH);
pcf8574.digitalWrite(P3, HIGH);
pcf8574.digitalWrite(P4, HIGH);
pcf8574.digitalWrite(P5, HIGH);
Serial.print("Init pcf8574...");
if (pcf8574.begin()){
Serial.println("OK");
}else{
Serial.println("KO");
}
}
void loop()
{
delay(300);
pcf8574.digitalWrite(P0, LOW);
delay(300);
pcf8574.digitalWrite(P1, LOW);
delay(300);
pcf8574.digitalWrite(P2, LOW);
delay(300);
pcf8574.digitalWrite(P3, LOW);
delay(300);
pcf8574.digitalWrite(P4, LOW);
delay(300);
pcf8574.digitalWrite(P5, LOW);
delay(300);
}

[admin]

because of convid-19, we all stay at home, next week go to company, after tested, feedback to you.

[engmohades]

because of convid-19, we all stay at home, next week go to company, after tested, feedback to you.

May God heal you, heal you, and guide you

[admin]

i have tested with your code, no problem. make sure you have set correct SDA and SCL pin in your pins_arduino.h
   
   
   

[Vulcan]

i have tested with your code, no problem. make sure you have set correct SDA and SCL pin in your pins_arduino.h

I changed the "nodemcu-32s pins_arduino file as you instructed but still getting the same errors. 
Please note that in your directory structure it's "packages/esp32/hardware/esp32/1.0.6/variants/nodemcu-32s". This is different from mine which is "packages/esp32/hardware/esp32/"2.0.6/variants/nodemcu-32s". If that helps.  I am running IDE version 2.0.3. I assume I don't need to hold the flash button down when loading the sketch? Any ideas of what I am still doing wrong?



Outside of this issue......

I will admit to being confused about the many chip numbers in Espressif's products. I see that the chip onboard the HC868-A6 iS A "ESP32-WROOM-32E" and you refer to it as a "Nodemcu-32S". I have many of your processors of different models and am not always sure which one to use in IDE or platformio. By way of example,  I have many  "esp-wroom-32" but can never find a board manager on IDE that lists that one so I use "esp32-wroom-da". Would that be correct? I have "esp32-wroom-32" chips, which is a 38pins processor and assume different pinouts, is there also referred to as a Nodemcu? 

I have previously loaded Tasmota on the HC868-A6 with an I2C display and noticed that while the relays were working from the main display, there are 7 buttons displayed (1-7) not 6. Toggling position 1 causes the I2C display to shut down. The template I am using is the HC868-A6 template. I am still learning Tasmota and am not yet sure what is happening. I check the configuration menu and it's set for GPIO 4,15 SDA on 4 and SCL on 15 and the display does work. Not sure why it's 1-7 buttons instead of 1-6, the number of relays onboard. IS that normal?

Sorry for asking more questions, just trying to learn as much as possible

[admin]

hold the flash button down when loading the sketch？
--> not need, KC868-A6 have added auto download circuit on the PCB. just click "upload" button on arduino IDE.

if you really can't work , if you have "anydesk" software, we can use it remote control your pc have a look.

Nodemcu-32S is a development board name, It is completely compatible with our circuit board. sure, if you are using esp32-wroom-32, 32E, 32UE, you can all chose "Nodemcu-32S".

if you want use 6 buttons tasmota UI for KC868-A6, here we have made the tasmota firmware, deleted one button. that firmware have enabled IIC SSD1306 displayer. here is details: https://www.kincony.com/forum/showthread.php?tid=2405