[BUG] Printer Configuration is empty

[dagarwal82]

Describe the bug No customization. Downloaded Marlin 2.0.9.3, board is BOARD_RAMPS_14_EFB. Just enabled EEPROM_SETTINGS and flashed Arduino Mega 2560. Downloaded ESP3D-2.1.1 and flashed the ESP32-CAM board. Uploaded latest index.html.gz (tried both from ESP3d folder and esp3d-webui github repo). But Printer Configuration is empty

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4. See error

Expected behavior A clear and concise description of what you expected to happen.

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ESP3D Firmware: (please complete the following information)

• Version:2.1.1
• Web UI Version:2.1.1
• Wifi mode:Both
• Any change done in FW - None

Target Firmware: (please complete the following information)

• Name: Marlin
• Version 2.0.9.3

Board used (please complete the following information):

• MCU: Ai Thinker ESP32-CAM
• Name:[e.g. NodeMCU2s]
• Flash size: [e.g. 4M: 2M/2M]

Browser used (please complete the following information):

• Name: Chrome
• Version [e.g. 2.0]
• Operating system [e.g. Windows 10]

Additional context Add any other context about the problem here. Developer tools output, error message, etc...

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[luc-github]

Only printer config does not show? What typing M115 and M503 show in webui terminal ?

[dagarwal82]

Controls doesn't work either.

[luc-github]

so issue is communication problem How do you wire esp to mega? what baud rate on each serial?

[dagarwal82]

Yes, I am definitely doing something wrong. Using AUX 1 of RAMPS 1.4 5v, ground, Rx, Tx (thats the config on AUX 1) . I am connecting Rx to Tx and vice versa between RAMPS and ESP32 drive. baud rate as in the screenshot is 115200

RAMPS 1.4 is connected to Mega and ESP is connected to RAMPS 1.4

[luc-github]

ok I think the issue is you directly wire a 5V board' s pin (Mega)to a 3.3v board's pin(ESP32) - esp32 is really not 5V tolerant - you need to decrease the voltage on esp32 RX pin - hoping you did not damaged your board check https://github.com/luc-github/ESP3D/wiki/ESP-32-CAM or https://github.com/luc-github/ESP3D/wiki/D1-mini

[dagarwal82]

Ok going to try. rest all the things works. I can control everything by connecting to computer.

[dagarwal82]

Just to confirm its ESP32-CAM (not just ESP32, If that makes sense I am novice). still 3.3v ?

[luc-github]

yes when esp8266 can handle such way (but I still do not recommend it), all esp32 based mcu are using 3.3v on rx/tx and any GPIO pins so model does not matter and they are really not 5V tolerant at all

[dagarwal82]

Question. shoud I follow the links that you shared for the connection or change it to use 3.3v . both links that you shared are using 5v of ESP32-CAM

[luc-github]

the board power and GPIO voltage are 2 differents things - some people people power the esp32 using 5v others use 3.3v - it depends of what you have and also of power supply current stability I personnaly always power esp32 cam using 5V because camera drain a lot , it is more experimental than anything as it depend also of your esp32 cam board

[dagarwal82]

Aaaahhh I understood now. I didn't see (or choose not to see :D ) the Resistors in your link. I will add some resistors, thought it was out of the box. By the way just saw smoke coming out of ESP32-CAM because I connected 5v of RAMP1.4 briefly to 3.3v ESP32. :D . haha Gotta get another one and try your solution. thanks

[luc-github]

Ho - sorry - yes I told you esp32 is not 5V tolerant

[dagarwal82]

Followed everythng as per the instruction, fried another one but stll no luck. I used multimeter to test the voltage. I am getting 1.6v on both tx and rx. but now not even seeing ESP32 wifi access point

[dagarwal82]

Well getting wifi now. but as soon as I connect tx and rx to RAMPS 1.4 my esp32 does not work

[dagarwal82]

I am going to validate this schematic error. May be thats why I am having issues. http://notserpe.blogspot.com/2012/05/ramps-14-schematic-errors.html

[dagarwal82]

No luck

[dagarwal82]

I suspect the default baud rate I am using 1152000 (Just noticed RAMPS 1.4 has 2500000) . Waiting for the 5v voltage regulator now to test

[DivingDuck]

A zero too much can have huge impact, hopefully only a typo: 1152000 (Just noticed RAMPS 1.4 has 2500000)

[dagarwal82]

Yes that was typo. Everything works now ! it was the baud rate issue

[github-actions[bot]]

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