Re: Working, then not, now 7805 is hot ;(

March 12, 2016, 6:43 am

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UPDATE:

So I havent gotten around to trying to upload anything via a second arduino.

I have tried the following:

Removing the LM7805:
Didnt help at all. No connection from PC possible. nothing.

Replacing the LM7805:
With 12V , Without USB from PC plugged in-> LCD screen flashes on then fades to black. Nothing is displayed
With 12, With USB from PC->LCD screen stays on, PC recognizes COM port and repetier host can connect. Havent been able to actually control the printer this way though
Without 12, With USB-> status LED is bright, i have 5 V on the 5V lines, but the PC doesnt recognize the COM port anymore...

Replaced LM7805 is still getting really hot..even with no peripherals attached..


How can it be that only when both the 5V from the 12V supply and the 5V from the USB supply are attached that my PC recognizes the COM port? What could be the reason that the LM7805 is getting so hot?

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Re: Working, then not, now 7805 is hot ;(

March 12, 2016, 8:26 am

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Another Update:

I've just removed the stepper drivers from the board... the lcd now stays bright and the lm7805 no longer gets too hot. looks like they are fried..

the lcd still is not displaying anything though.

when trying to reupload firmware im getting the following message:


avrdude: stk500_getsync(): not in sync: resp=0x00

i have the autoreset jumper in

Re: Arduino does not show my Sanguino board

March 14, 2016, 6:24 pm

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Hi, I have the same problem. How you make Arduino to see the Sanguino board on the menu? Zee, Simply copying the sanguino folder into the hardware folder does not work.

Re: Arduino does not show my Sanguino board

March 14, 2016, 6:34 pm

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If your using a modern version of the arduino IDE, its all changed

see [dustsreprap.blogspot.co.nz]

Re: Arduino does not show my Sanguino board

March 14, 2016, 6:37 pm

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Hi, Scubi, can you help me out?

Re: Arduino does not show my Sanguino board

March 14, 2016, 6:49 pm

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Dust, thanks. So, how can i do it with my arduino v1.6.x. Complicated long story?

Re: Arduino does not show my Sanguino board

March 14, 2016, 10:34 pm

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by reading [dustsreprap.blogspot.co.nz] as already said...

Re: backup installed firmware?

March 25, 2016, 3:13 pm

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Quote
RNJ
I found this solution with the help of this* blog from KarlP:
*[false.ekta.is]


0.For Firmware Backup and Reset goto the arduino folder where avrdude.exe is located and copy avrdude.conf (located within the arduino folder) to the same directory.

1. in cmd go to that folder (something like cd "C:\program files\Arduino\hardware\tools\avr\bin") and type the following line (without running it!)

for backup:
avrdude -p atmega2560 -P com17 -c stk500v2 -b115200 -F -U flash:w:factory_firmware.hex:i

for restore (the -D option is to skip erasing before programming):
avrdude -p atmega2560 -P com17 -c stk500v2 -b115200 -F -D -U flash:w:factory_firmware.hex:i

replace factory_firmware.hex with the your desired filename and com17 with your com port

2. now hold the reset button on the mega board and release it simultaneously with executing the avrdude command line (else you will get a timeout error)

I hope this helps sombody someday...

Hi RNG,

Shouldn't it be "-U flash:r" to read from Arduino (backup) and "-U flash:w" to write to Arduino (restore)?

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Re: problem with sanguinololu

March 28, 2016, 3:57 am

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Hello everybody,
I know this thread is a little older, but since yesterday I have the same problem: extruders stepper won´t turn anymore.
I connected the extruder stepper to x,y, and z axis and the stepper moves. but not on its own place...
I swapped the pololus, all four are working,
@Dshiri1: did you solve the problem?
Regards
Rollo

Re: problem with sanguinololu

April 29, 2016, 4:58 am

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Is the temperature above the safe limit in firmware?

Re: MAXTEMP Error

May 16, 2016, 12:23 pm

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Did anyone ever find an answer to this problem??? I'm having the same problem. It didn't start until I uploaded Marlin firmware. Every time I try to connect to Repetier, the Maxtemp pops up and I can't get it to go away. I put Marlin back exactly the way it was prior to the error and I still get Maxtemp.

1284P Fuse settings confirmation?

May 18, 2016, 10:19 pm

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Hey all, trying to get my repstrap up and running (Sanguinololu w/ a 1284p). I'm seeing different fuse settings depending on where I look.
Currently I'm set to (l,h,e) D6,DA,FD. But I've also seen DC,D7,FD mentioned.

So I figured I'd ask what the community thinks? Do I need a big boot flash? And what Oscillator/Startup/Power settings should I use?

Re: 1284P Fuse settings confirmation?

May 19, 2016, 3:10 am

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I know when I upgraded mine I used

Low 0xD6
High 0xDC
Ext 0xFD

I use the Gen7 bootloader the size is what they recommend on their page 1k. (It was most reliable at the time, might still be)
Now the gen 7 uses a crystal and the standard SL uses a resonator so don’t use the gen 7 crystal settings

Re: 1284P Fuse settings confirmation?

May 19, 2016, 4:49 am

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Quote
Dust
Now the gen 7 uses a crystal and the standard SL uses a resonator

That's the same. On the Sanguinololu, crystal and two caps are in one package, on the Gen7 there are 3 separate parts.

Here's a fuse calculator: [www.engbedded.com]

Re: 1284P Fuse settings confirmation?

May 19, 2016, 11:25 am

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So the proper settings are:
DC, D7, FD
Same oscillator/crystal settings as gen7 and 1024words for the bootloader?
Thanks!

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Re: Arduino does not show my Sanguino board

May 27, 2016, 12:39 am

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As far as I know you can only use arduino v1.01. If the Sanguino board is not shown under the boards menue you need the boards file under the hardware/arduino folder. If you look at it with a text editer you should see the Sanguino board.

Re: Arduino does not show my Sanguino board

May 27, 2016, 6:20 pm

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Does anyone have a comprehensive set of instructions on how to burn the bootloader to the sanguino boards? There are lots of piecemeal comments but they only seem to work for a small subset of users. The instructions for adding the sangrino boards to the Arduino ISP do not work as is. The download is missing the platform.txt file which can be obtained from Github but you have to dig for the information. There is also an apparent incompatibility with the ld application that causes a compile failure. You have to extract the ld.exe from an earlier version of the Arduino IDE. Finally you can upload the program to your Uno. But to burn the boot loader, you need to change the board to the target board - sanguino in this case. The option does not appear in he Tools/board dropdown so you have to wonder how to accomplish this. So far I am stuck. I have not been able to find anything that details how to accomplish this. Searching through the forums answers have the file existing in any number of directories. I have put the sanguino directory as a subdirectory under every subdirectory under Program Files\Adruino| but the options never appear in the tools/boards dropdown.

I am running on Win XP SP3, Arduino IDE 1.6.9
Any help?

Re: Arduino does not show my Sanguino board

May 28, 2016, 12:39 am

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The instructions work fine... no idea what your doing..

I downloaded latest Arduino 1.6.9 windows.zip onto my old Windows Xp machine

Extracted the zip to the desktop

Ran the IDE, as expected no Sanguino files

Open up the menu File|Preferences

At the bottom is a field Additional Boards manager URLs:
Enter "https://raw.githubusercontent.com/Lauszus/Sanguino/master/package_lauszus_sanguino_index.json"

Click OK

Open up the menu Tools|Board:|Boards manager...

This will open the manager. Scroll down till you see Sanguino
Click more info, this will reveal an install button.

Hit install.

Close the Board manager.

Sanguino is now in the list of boards at the bottom.

Select it and new menu item is now visable in the Tools menu. Processor
Now select the type of Processor 644p at 16mhz or 1284p at 16mhz are normal for Sanguino boards, though you can get 20mhz versions, for that you will need to edit the boards.txt file

Re: Arduino does not show my Sanguino board

May 28, 2016, 1:01 am

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In regard to writing a bootloader

You need some sort of avr ISP, you look to be trying to use a uno

Firstly you need to turn your uno into a avr ISP

following the steps 1-4 here [www.arduino.cc]

The uno is now your avi ISP

next you need to wire it to the SL board, this is different depending on exactly what board your programming, but they are wired the same, you just need to find the correct pins (most have a 6 pin ISP header, and they are all on there)

Arduino_as_ISP_atmega644p.gif

[www.arduino.cc]
The led and resistors are not needed, they are just so you can so something is happening. The power and crystal will already be there on the board.

This graphic presumes a 644p or 1284p chip not in a board, so it adds in everything you need to run the bare chip.

In reality with the chip in a board all you need its the following
uno d10 to reset on SL
uno d11 to mosi on SL
uno d12 to miso on SL
uno d14 to sck SL
uno gnd to SL gnd

Both the boards still need power. I would power the uno via usb cable as you have to have that connected anyways for serial communications. I prefer a usb power bank for the SL, just to ensure no crazy power loops and no guess work as to which com port to use (as you can't see the SL com port)
This way you just get a nice chain, no loops. ie computer -> usb cable -> uno -> isp wires -> SL <- USB Power bank

Now do steps 6-8 from [www.arduino.cc]

Re: Arduino does not show my Sanguino board

May 29, 2016, 9:02 am

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Thanks for the detailed instructions. I have followed the steps and everything works up until the BurnBootloader command. At that point
the load fails with an Access Denied to the COM port that the Arduino is using. I have attached the error file from the upload. I have double
checked the wiring - I am using a ribbon cable to connect the 2 boards via the 6 pin ICSP connectors. I did use a 47uf capacitor between the Reset
and ground on the Arduino running as the ISP because I couldn't find 10uf one.
Is there a simple way to tell if the board/processor is bad. I just got it from China so that is a possibility.