fysetc / fysetc-big_dipper Goto Github PK

Cant find any description of the Connectors and Jumper brigdes.
Try and error could be expensive

what is the Minimum Input Power Supply Voltage for the Big Dipper board?

Hi does anyone have the dimensions of the mounting holes?

I'm be installing a big dipper on a mingda d2, i've connected 9nly one stepper motor for testing movements but the motor is veru loudy.
firmware version 3.4.0beta 5

For my Hotend on my 3D printer i got a PT1000 thermistor, with the usual config the temp reading is way to high like 361 degr C.

M308 S1 P"temp1" Y"pt1000" T100000 B3950 R4700 ; configure sensor 1 as thermistor on pin temp1
M950 H1 C"out1" T1 ; create nozzle heater output on e0heat and map it to sensor 1
M307 H1 B0 R2.260 C374.9 D3.97 S1.00 V25.0 ; disable bang-bang mode for heater and set PWM limit

I have tried several, example if i rename to "thermistor" the temp reading is 143 degr. C
Its not the wiring or defective sensor, tested a new semsor directly on the board, same result. the problem aint the wiring nor the pt1000.
The temp sensor of my 220V heated bed is working fine, i dont know which type sensor they used on heatpad.

I really could use some help.
thanks all.

Hi please can you check the schematic is correct

X2G- missing of schematic
X2H -missing of schematic

OUT3 AND OUT4 Pin order not the same on Schematic as PCB

I have just bought Big Dipper board and I'm going to run it with Raspberry Pi i n SBC mode.

First of all, I replaced firmware for Duet5Mini+ suitable one, downloaded from Duet3d website. In no-SBC mode it was working fine.

For now I have tried to connect RPi using ribbon cable out of the box. And the Raspberry Pi does not recognize the board. After connecting to RPi's IP DWC throws an error "Timeout waiting for transfer ready pin", which I met when connection between original Duet and RPi is disconnected.
To double-check all connections I connected original DuetMini5+ board and everything works fine.

At the moment I have checked that there is no signal on RDY pin (GPIO 22), so the communication by SPI is not starting up.
After that, I suspect there is something wrong with the board.
SD card slot on Big Dipper board is empty. I am using Duet-provided RPi card image.

I am not sure is there any jumper or MCU configuration causing it is not working out-of-the-box. I have checked Big Dipper schematics and I figured out there is only a buffer (supplied from 3.3 V got from RPi) between MCU out and GPIO port.

I have also tried to find out some similar issues but I figured out that SBC mode in FYSETC boards is not quite common.

Has somebody met similar problems?

While I can not create a branch from the Big Dipper, I created a Fork to include my CAD data.
https://github.com/the0bone/FYSETC-BIG_DIPPER/tree/main/CAD

On a new board don't connect to PC. Clip set to 5V. 5v red led light on, 3.3 red led light on, but status red led light on 1sec per 15 seconds. Does not create COM-port on pc, does not respond to the inserted sd card with firmware. When press the motherboard reset button twice, new disk appearing on the computer, but only 2-3 second, then board rebooting. This may be due to a bad bootloader, but I don't find information about replace it.

I had it working on a Duet3D 2 wifi, but im clueless on the big dipper board. i try to use the "CAN" for serial, have tried several settings in M575, no result. It is powered up by the 5V supply but RX/TX is the problem.

Thanks