Robotdyn Uno wifi /Wifi connection error

siddh-1 · July 18, 2021, 10:30am

Hi there, so i am new with arduino Microcontroller && Software. I recently bought Robotdyn uno wifi. I have download the Ch340 drive and The board manager for Esp8266. So why i am making this thread is that i have some issue.

!. How should i connect the Esp8266 module to Wifi ??
I've try to Upload sketch to Esp8266 module( Dip switches was 5,6,7 On ) and it doesn't seems to Work idk Why

Here is the code that i try to Upload

#include <Arduino.h>
#include <ESP8266WiFi.h>




const char* ssid = "RDASHOME";
const char* password = "95460138955427246945";

void setup(){
  Serial.begin(115200);
  WiFi.begin(ssid, password);

  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
  Serial.println("");
  Serial.print("connected to ");
  Serial.println(ssid);
  Serial.print("IP address: ");
  Serial.println(WiFi.localIP());
}
void loop (){
  
}

What i got in the Blackscreen

Executable segment sizes:
ICACHE : 32768           - flash instruction cache 
IROM   : 238752          - code in flash         (default or ICACHE_FLASH_ATTR) 
IRAM   : 26733   / 32768 - code in IRAM          (IRAM_ATTR, ISRs...) 
DATA   : 1504  )         - initialized variables (global, static) in RAM/HEAP 
RODATA : 964   ) / 81920 - constants             (global, static) in RAM/HEAP 
BSS    : 25672 )         - zeroed variables      (global, static) in RAM/HEAP 
Sketch uses 267953 bytes (27%) of program storage space. Maximum is 958448 bytes.
Global variables use 28140 bytes (34%) of dynamic memory, leaving 53780 bytes for local variables. Maximum is 81920 bytes.
esptool.py v3.0
Serial port COM6
Connecting....
Chip is ESP8266EX
Features: WiFi
Crystal is 26MHz
MAC: e8:db:84:9c:82:d3
Uploading stub...
Running stub...
Stub running...
Configuring flash size...
Auto-detected Flash size: 4MB
Flash params set to 0x0340
Compressed 272112 bytes to 199691...
Writing at 0x00000000... (7 %)
Writing at 0x00004000... (15 %)
Writing at 0x00008000... (23 %)
Writing at 0x0000c000... (30 %)
Writing at 0x00010000... (38 %)
Writing at 0x00014000... (46 %)
Writing at 0x00018000... (53 %)
Writing at 0x0001c000... (61 %)
Writing at 0x00020000... (69 %)
Writing at 0x00024000... (76 %)
Writing at 0x00028000... (84 %)
Writing at 0x0002c000... (92 %)
Writing at 0x00030000... (100 %)
Wrote 272112 bytes (199691 compressed) at 0x00000000 in 17.9 seconds (effective 121.9 kbit/s)...
Hash of data verified.

Leaving...
Hard resetting via RTS pin...

Please tell me if there is an Issue

Answer will be helpful

pert · July 18, 2021, 10:39am

Please provide a detailed description of what you mean by "doesn't seems to Work". The output you shared is of a successful upload.

siddh-1 · July 18, 2021, 11:47am

By that i mean is that i am not receiving any Output in Serial Monitor. Also is it because i dont have an Antenna??

pert · July 18, 2021, 12:07pm

Do you have the baud rate menu near the bottom right corner of Serial Monitor set to 115200?

siddh-1 · July 18, 2021, 12:55pm

Yes its on 115200

pert · July 18, 2021, 1:03pm

When I'm encountering unexpected behavior with Serial Monitor output, I like to upload this basic known-good sketch as a "smoke test":

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

void loop() {
  Serial.println("hello");
  delay(1000);
}

You should see "hello" printed to Serial Monitor once a second.

siddh-1 · July 18, 2021, 4:36pm

This is what i got as Error while running ur Code

..__Executable segment sizes:
ICACHE : 32768           - flash instruction cache 
IROM   : 236020          - code in flash         (default or ICACHE_FLASH_ATTR) 
IRAM   : 26733   / 32768 - code in IRAM          (IRAM_ATTR, ISRs...) 
DATA   : 1496  )         - initialized variables (global, static) in RAM/HEAP 
RODATA : 892   ) / 81920 - constants             (global, static) in RAM/HEAP 
BSS    : 25608 )         - zeroed variables      (global, static) in RAM/HEAP 
Sketch uses 265141 bytes (27%) of program storage space. Maximum is 958448 bytes.
Global variables use 27996 bytes (34%) of dynamic memory, leaving 53924 bytes for local variables. Maximum is 81920 bytes.
An error occurred while uploading the sketch
esptool.py v3.0
Serial port COM6
Traceback (most recent call last):
  File "C:\Users\...\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\3.0.1/tools/upload.py", line 66, in <module>
    esptool.main(cmdline)
  File "C:/Users/.../AppData/Local/Arduino15/packages/esp8266/hardware/esp8266/3.0.1/tools/esptool\esptool.py", line 3551, in main
    esp = chip_class(each_port, initial_baud, args.trace)
  File "C:/Users/.../AppData/Local/Arduino15/packages/esp8266/hardware/esp8266/3.0.1/tools/esptool\esptool.py", line 271, in __init__
    self._port = serial.serial_for_url(port)
  File "C:/Users/.../AppData/Local/Arduino15/packages/esp8266/hardware/esp8266/3.0.1/tools/pyserial\serial\__init__.py", line 90, in serial_for_url
    instance.open()
  File "C:/Users/.../AppData/Local/Arduino15/packages/esp8266/hardware/esp8266/3.0.1/tools/pyserial\serial\serialwin32.py", line 64, in open
    raise SerialException("could not open port {!r}: {!r}".format(self.portstr, ctypes.WinError()))
serial.serialutil.SerialException: could not open port 'COM6': PermissionError(13, 'Zugriff verweigert', None, 5)
serial.serialutil.SerialException: could not open port 'COM6': PermissionError(13, 'Zugriff verweigert', None, 5)

pert · July 18, 2021, 5:30pm

Make sure you don't have COM6 open in any other applications. Only one application at a time can have a serial port open, so if another one has it open then the Arduino IDE can't use it to upload.

If you can't find any other application with it open, try restarting your computer. Sometimes the port will get stuck in an unusable state and restarting fixes that.

Juraj · July 18, 2021, 7:01pm

CH340 takes a little time to wake up. add delay(500); after Serial.begin, else you miss the prints from setup()

siddh-1 · July 18, 2021, 7:30pm

Ok so after Restarting my Computer i dont see the Esp Board manager and if i try to redownload it i dont see it in the List. Should i redownload the Ide?

pert · July 18, 2021, 9:52pm

Please open File > Preferences from the Arduino IDE's menus and then check the contents of the "Additional Boards Manager URLs" preference. Do you see this URL?:

https://arduino.esp8266.com/stable/package_esp8266com_index.json

siddh-1 · July 19, 2021, 7:18am

So tried to Restart my Computer & put the URL you gave in Preferences and Upload the "Smoke-Test" to the Esp8266 module while No other Application was open which used the Com6 and during the Upload the Serial Monitor closed. After a Succesful Upload i opened the Serial Monitor and it was Blank

Executable segment sizes:
ICACHE : 32768           - flash instruction cache 
IROM   : 236020          - code in flash         (default or ICACHE_FLASH_ATTR) 
IRAM   : 26733   / 32768 - code in IRAM          (IRAM_ATTR, ISRs...) 
DATA   : 1496  )         - initialized variables (global, static) in RAM/HEAP 
RODATA : 892   ) / 81920 - constants             (global, static) in RAM/HEAP 
BSS    : 25608 )         - zeroed variables      (global, static) in RAM/HEAP 
Sketch uses 265141 bytes (27%) of program storage space. Maximum is 958448 bytes.
Global variables use 27996 bytes (34%) of dynamic memory, leaving 53924 bytes for local variables. Maximum is 81920 bytes.
esptool.py v3.0
Serial port COM6
Connecting....
Chip is ESP8266EX
Features: WiFi
Crystal is 26MHz
MAC: e8:db:84:9c:82:d3
Uploading stub...
Running stub...
Stub running...
Configuring flash size...
Auto-detected Flash size: 4MB
Flash params set to 0x0340
Compressed 269296 bytes to 197713...
Writing at 0x00000000... (7 %)
Writing at 0x00004000... (15 %)
Writing at 0x00008000... (23 %)
Writing at 0x0000c000... (30 %)
Writing at 0x00010000... (38 %)
Writing at 0x00014000... (46 %)
Writing at 0x00018000... (53 %)
Writing at 0x0001c000... (61 %)
Writing at 0x00020000... (69 %)
Writing at 0x00024000... (76 %)
Writing at 0x00028000... (84 %)
Writing at 0x0002c000... (92 %)
Writing at 0x00030000... (100 %)
Wrote 269296 bytes (197713 compressed) at 0x00000000 in 17.4 seconds (effective 123.7 kbit/s)...
Hash of data verified.

Leaving...
Hard resetting via RTS pin...

siddh-1 · July 19, 2021, 7:20am

Sending you Screenshot of Board Manager Setting or whatever is called.

Juraj · July 19, 2021, 8:28am

see my previous comment

siddh-1 · July 19, 2021, 9:02am

So i tried now but i got this as a error while uploading the Sketch and the Serial monitor was Open. Also i tried to Upload the sketch and the Serial Monitor was closed. The sketch was Uploaded but nothing showed in Serial Monitor Afterwards:

Sketch uses 265141 bytes (27%) of program storage space. Maximum is 958448 bytes.
Global variables use 27996 bytes (34%) of dynamic memory, leaving 53924 bytes for local variables. Maximum is 81920 bytes.
esptool.py v3.0
Serial port COM6
Connecting........_____....._____....._____....._____....._____....._____....._____
Traceback (most recent call last):
  File "C:\Users\Aesha\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\3.0.1/tools/upload.py", line 66, in <module>
    esptool.main(cmdline)
  File "C:/Users/Aesha/AppData/Local/Arduino15/packages/esp8266/hardware/esp8266/3.0.1/tools/esptool\esptool.py", line 3552, in main
    esp.connect(args.before, args.connect_attempts)
  File "C:/Users/Aesha/AppData/Local/Arduino15/packages/esp8266/hardware/esp8266/3.0.1/tools/esptool\esptool.py", line 529, in connect
    raise FatalError('Failed to connect to %s: %s' % (self.CHIP_NAME, last_error))
esptool.FatalError: Failed to connect to ESP8266: Timed out waiting for packet header
esptool.FatalError: Failed to connect to ESP8266: Timed out waiting for packet header

Juraj · July 19, 2021, 11:44am

do you use the "ESP Reboot" button or set the switch 7 to change between flashing mode and running mode of the eesp8266?
warning: the DIP switches can't take too much switching. they fall apart after time

siddh-1 · July 19, 2021, 3:11pm

The dip switches are 567 on and other off

siddh-1 · July 24, 2021, 6:32pm

Hello, so there are some good news. The serial monitor works but only if i upload the Code when the dip switchtes are 567 on and after Uploading turn 7 Off and press the Reset button (the red one NOT THE ESPREBOOT BUTTON) then it Works. Can someone conform this who bought the Robotdyn uno wifi if this same happens to him?

Juraj · July 24, 2021, 6:50pm

with 7 ON the esp8266 goes into flashing mode. the espreboot button should do the same. so spare your switch 7

siddh-1 · July 24, 2021, 7:32pm

Thanks for tip but if i upload the sketch and reboot the Esp nothing is popping in Serial Monitor
Here is the code btw:

void setup (){
  Serial.begin(115200);
}
void loop(){
  Serial.println("HEllo there xddd");
  delay(1000);
}

Executable segment sizes:
ICACHE : 32768           - flash instruction cache 
IROM   : 236020          - code in flash         (default or ICACHE_FLASH_ATTR) 
IRAM   : 26733   / 32768 - code in IRAM          (IRAM_ATTR, ISRs...) 
DATA   : 1496  )         - initialized variables (global, static) in RAM/HEAP 
RODATA : 900   ) / 81920 - constants             (global, static) in RAM/HEAP 
BSS    : 25616 )         - zeroed variables      (global, static) in RAM/HEAP 
Sketch uses 265149 bytes (27%) of program storage space. Maximum is 958448 bytes.
Global variables use 28012 bytes (34%) of dynamic memory, leaving 53908 bytes for local variables. Maximum is 81920 bytes.
esptool.py v3.0
Serial port COM7
Connecting....
Chip is ESP8266EX
Features: WiFi
Crystal is 26MHz
MAC: e8:db:84:9c:82:d3
Uploading stub...
Running stub...
Stub running...
Configuring flash size...
Auto-detected Flash size: 4MB
Flash params set to 0x0340
Compressed 269296 bytes to 197723...
Writing at 0x00000000... (7 %)
Writing at 0x00004000... (15 %)
Writing at 0x00008000... (23 %)
Writing at 0x0000c000... (30 %)
Writing at 0x00010000... (38 %)
Writing at 0x00014000... (46 %)
Writing at 0x00018000... (53 %)
Writing at 0x0001c000... (61 %)
Writing at 0x00020000... (69 %)
Writing at 0x00024000... (76 %)
Writing at 0x00028000... (84 %)
Writing at 0x0002c000... (92 %)
Writing at 0x00030000... (100 %)
Wrote 269296 bytes (197723 compressed) at 0x00000000 in 17.6 seconds (effective 122.2 kbit/s)...
Hash of data verified.

Leaving...
Hard resetting via RTS pin...

Also if the upload the sketch in Flashing mode and go the read mode(5ON, 6ON and 7OFF) and reboot it then the Serial monitor works.

I dont want that my dipswitches break so if you know how to solve this then it will be appreciative

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