No Printer Attached

[lawsjr]

I am sure this has been asked before but can't find the answer. I have a BTT SKR mini e3 V2.0 with a BTT TFT35 V3 touch screen. I have been fighting the no printer attached for two days now with no luck. I am using Cheetah 5.0 for the firmware and have edited it for my set up. I also downloaded the latest firmware for the TFT35. I have tried every combination of serial ports that I could and nothing has worked yet. config.h serial port info /**

• Select the serial port on the board to use for communication with the host.
• This allows the connection of wireless adapters (for instance) to non-default port pins.
• Serial port -1 is the USB emulated serial port, if available.
• Note: The first serial port (-1 or 0) will always be used by the Arduino bootloader.
• :[-1, 0, 1, 2, 3, 4, 5, 6, 7] */

  define SERIAL_PORT -1

/**

• Select a secondary serial port on the board to use for communication with the host.
• :[-1, 0, 1, 2, 3, 4, 5, 6, 7] */

  define SERIAL_PORT_2 1

define SERIAL_PORT_3 6

/**

• This setting determines the communication speed of the printer.
• 250000 works in most cases, but you might try a lower speed if
• you commonly experience drop-outs during host printing.
• You may try up to 1000000 to speed up SD file transfer.
• :[2400, 9600, 19200, 38400, 57600, 115200, 250000, 500000, 1000000] */ //#define BAUDRATE 250000 //value defined in boards_def.h

boards_def.h info

if ENABLED(BTTSKRE3MINIV2_0)

define motherboard_name BOARD_BTT_SKR_MINI_E3_V2_0

define SERIAL_PORT -1

define SERIAL_PORT_2 1

define SERIAL_PORT_3 6

define BAUDRATE 115200

endif

[oldman4U]

Hi.

Not sure I completely understand what Cheetah does, but it seems to be based on Marlin and Marlin for sure does not support 3 serial ports. So i would remove the third serial port and try it again.

115200 is my preferred baud rate which works fine on my printers. Can not see a benefit using 250k.

[lawsjr]

Cheetah is basically a flavor of Marlin 2.0. I have tried just using 2 ports doesn't matter still no communication between the board. Baud rate is set to 115200.

[oldman4U]

So you used minus one and one for the two serial ports and removed the third from firmware. And you have the serial cable connected besides the AUX cable to a total of two cables between the TFT and the mainboard. And the mainboard and the TFT are using the same baudrate. Anything else attached?

[lawsjr]

That is correct and nothing else is attached. I have a WiFi module for the tft but removed it until I get them talking. Yes just two cables attached the flat ribbon cable and the 4+1 tft cable. I have tried -1 and 1. Also -1 and 2

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On Sep 7, 2020, at 10:10, oldman4U notifications@github.com wrote:

 So you used minus one and one for the two serial ports and removed the third from firmware. And you have the serial cable connected besides the AUX cable to a total of two cables between the TFT and the mainboard. And the mainboard and the TFT are using the same baudrate. Anything else attached?

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[oldman4U]

Do you have another TFT or mainboard you could try? You can see - i am running out of things we can try...;-(

[lawsjr]

I have the factory board and screen. That is my last try. Going to use a port sniffer and see if the ports are working or not. If not swap the factory stuff back in and see.

Sent from my iPhone

On Sep 7, 2020, at 12:52, oldman4U notifications@github.com wrote:

 Do you have another TFT or mainboard you could try? You can see - i am running out of things we can try...;-(

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[oldman4U]

What are the factory board and screen?

[lawsjr]

The boards from creality that came with the printer

Sent from my iPhone

On Sep 7, 2020, at 14:56, oldman4U notifications@github.com wrote:

 What are the factory board and screen?

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[oldman4U]

Ender 3?

Before you do so, have you ever tried to switch to Marlin Mode?

[lawsjr]

Found the problem. The black 4+1 wire was wired wrong. Finds printer but I get failed to enable auto bed leveling with the bltouch enabled in the firmware

Sent from my iPhone

On Sep 7, 2020, at 15:17, oldman4U notifications@github.com wrote:

 Ender 3?

Before you do so, have you ever tried to switch to Marlin Mode?

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[oldman4U]

Wonderful. So please close this ticket and start a new one with the new issue.

lawsjr notifications@github.com schrieb am Mo. 7. Sep. 2020 um 22:52:

Found the problem. The black 4+1 wire was wired wrong. Finds printer but I get failed to enable auto bed leveling with the bltouch enabled in the firmware

Sent from my iPhone

On Sep 7, 2020, at 15:17, oldman4U notifications@github.com wrote:



Ender 3?

Before you do so, have you ever tried to switch to Marlin Mode?

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