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bigtreetech / BIGTREETECH-S42B-V1.0

The closed-loop drive is to feedback the rotation angle of the stepping motor to the control panel, compare the distance that needs to be rotated with the distance of the actual rotation, calculate the error value, and then compensate, so as to prevent the problem of multi-step and lost step. The closed-loop drive can completely overcome the lost step of the open-loop stepping motor, and can also significantly improve the performance of the motor at high speed
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s42b v1.1 frame err! ch340g connection #47

Closed linewallker closed 3 years ago

linewallker commented 3 years ago

Hello to all, I have some issue when I connect s42b v1.1 board via ch340g usb to ttl driver, no baud rate works and still getting only Frame Err! when I am on serial monitor.

Even connecting with TrueStep Terminal is not working and I am still getting this error again and again, but TS Terminal is reading the settings I need but when I change I can not write back with error message that something went wrong.

Does anyboody have any clue what to do to get it work ? I need to change PID settings due oscilation os X axis arm image image

when I change to 115200 baud I am getting only symbols image

please help guys

when I try to move the arm it is like when the amatuer driver is trying to get the car mooving forward :)

GhostlyCrowd commented 3 years ago

TX on the USB-TTL goes to RX on the S42B and RX on the USBTTL goes to TX on the S42B. GND goes to GND and don't connect 3.3v or 5v on the USB-TTL, Power the S42B via the Printers power. I have a cheap ch340g usb to ttl and this works for me.

linewallker commented 3 years ago

Now I can connect and read data with no problem, but I can not write Back anything with error something went wrong 16118401180203740351221808893394

linewallker commented 3 years ago

Thanks for your a swer, I will try tomorow and let you know if It worked for me. If I should be honest, i have conected only by Ch340 to usb without printer so this is possible the answer for me 😉Odesláno z mého telefonu Huawei-------- Původní zpráva --------Od: GhostlyCrowd notifications@github.comDatum: st 27. led 2021 21:54Komu: "bigtreetech/BIGTREETECH-S42B-V1.0" BIGTREETECH-S42B-V1.0@noreply.github.comKopie: linewallker linewallker@centrum.cz, Author author@noreply.github.comPředmět: Re: [bigtreetech/BIGTREETECH-S42B-V1.0] s42b v1.1 frame err! ch340g connection (#47) TX on the USB-TTL goes to RX on the S42B and RX on the USBTTL goes to TX on the S42B. GND goes to GND and don't connect 3.3v or 5v on the USB-TTL, Power the S42B via the Printers power. I have a cheap ch340g usb to ttl and this works for me.

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linewallker commented 3 years ago

Ok, so after some time I must say that serial terminál is working solution but the P I D tuning is a large pain in my ass right now. I do not know how to count the correct value so I am trying manuál way.

After about 1000 tests i am exactly where I started, axis still oscilate and create wawes in the plot even whe i am not able to setect vibration.

Do somebody know how to find correct values for P. I. D.?

linewallker commented 3 years ago

It was not grbl so we can close it..