Ryan.
I have a black “Reply” arrow on the right side of the forum text. Also a RED box with an arrow below the text for reply. Which one do you want me to use?
Rand
When you use the black one it is technically a reply to that person, there is a reply button in each post. If you use the red one it is just a reply to the thread in general.
Makes it easy to answer specific people if needed. Around here, we typically use the quote function.
like this
Thank you - now I understand the system and will try to respond correctly.
Any thoughts about inventory and availability?
Rand
Heck I always hit the black arrow. I should usually hit the red one since I almost always quote.
In terms of?
Two bad boards.
How did they go bad in the first place? If you got them from me they came flashed so all you had to do is wire it up and go.
In terms of flashing unplug everything. Including the driver chips and power supply. Put the power jumper to USB. Plug in the microsd with the one file on it, firmware.bin. Plug in a USB cable and watch for a green flashing light near the CPU. It does not last long. 5 secinds a pause and another 5 seconds or so.
1 Like
I moved that post because I think it could be useful to a lot of people. It is still linked here as well.
Rand, did you buy the boards from me?
3 Likes
No - you told me you no longer supported 3 D printing and I changed from Arduino Ramp boards to the SKR pro.
I tried to buy 8mb micro as chips but the smallest locally is 32mb. If I format them to fat32 12 mb and load the firmware bin should that flash okay?
1 Like
32Gb should be ok, but try to use that tool to format it:
Do you umount/eject your sdcard from your os before to remove it ? Maybe try to mark a pause between the end of the firmware.bin copy and the moment you unmount it, and a new pause after the moment the sdcard drive disapears before to get it off your sdcard writer.
2 Likes
Yes, I will follow your instructions and the format based on SD Association software my existing micro chips, then go to the V1 site and copy the SKR pro
Firmware.bin…. Do I just drag it over to the D drive destination and let it load? I will load the firmware and wait on the
load time and then eject the SD card.
Then I will load the micro chip onto the SKR board and give it time to load.
Anything else I should do to be successful in flashing these?
Rand
1 Like
Yes but firmware is compressed on V1 github so unzip it first and then copy the firmware.bin file into your sdcard.
Do not feel offensed if it’s just an evidence for you, i don’t know your skill level and we already saw people doing wrong by renaming the zip archive to firmware.bin…
Choose the correct archive depending of your wiring setup:
For Serial wiring (3 stepper drivers ) : V1CNC_SkrPro_2209-2.0.9.2.zip
For Dual endstop wiring(5 stepper drivers) : V1CNC_SkrPro_Dual_2209-2.0.9.2.zip
I posted links of 513 release, the one i’m currently using, for the last V1 release use those links :
For Serial wiring (3 stepper drivers ) :
https://github.com/V1EngineeringInc/MarlinBuilder/releases/download/515/V1CNC_SkrTurbo_2209-2.1.1.zip
For Dual endstop wiring(5 stepper drivers) : https://github.com/V1EngineeringInc/MarlinBuilder/releases/download/515/V1CNC_SkrPro_Dual_2209-2.1.1.zip
Unplug every thing on your board(drivers, screen, stepper wires, motors power bridge) and just keep DC or USB power.
If you have an air compressor blow some air on both side of your board, once it happened to me that a very tiny aluminium chip prevent me to flash the firmware.
I would also remove the board from that white polyethylene foam as PE foams can be either anti-static foams or conductive foams, if yours are conductive ones it could lead to you to that erratic behavior on all your board. Foam can also become conductive if it contains too much moisture/humidity
Board turned off(USB unplugged if your powering jumper is set to USB) insert your SD card in your SKR pro then turn it on. If no green blinking led you might try to press the red reset button next to the sdcard reader port.
If still not flashing, i think your last option would be to follow what i’ve previously posted to flash it via the USB bootloader to rescue your boards.
2 Likes
Very important.
1 Like
Ryan’
I have inquired several times about buying a SKR pro 1.2 board flashed and a second chip flashed with the software for three steppers wired in series. Can out tell me the price and how soon you could ship out these parts? If you have any questions please let me know…
Rand
1 Like
Rand that is the standard for what is in the shop. It is currently available.
I am extremely worried about how the other two boards died, plugging in a third one without figuring it out is not a good idea.
1 Like
My best guess is two of the boards have a problem with the 3vt circuit. This would prevent the firmware flashing but give other indications that I was making progress. I have three new 12 volt power supplies and are unused but I don’t
Have a way to check them under load - they test 12.2 volts on my meter. The third board (from a different lot). Works on both Marlin and Touch Screen fine except one driver needs to be changed. I am afraid of the possibilities of another problem and losing a board but connecting the power was the easy part. I would welcome suggestions.
Rand
Ryan,
I just placed an order for the SKRPro 1.2 board flashed for a MPCNC three drivers in series. I also ordered another chip but wanted to check that it would also be flashed with the firmware. Thanks
Rand
1 Like
Yes the MPCNC firmware works with series or individually wired. And yes they are all flashed.
I have been through hundreds and hundreds of these boards and have never once had that issue, actually I have only ever had one issue that I am still not sure was a factory issue. The chances of you having two bad boards is just really not feasible.
I am sending you a flashed a tested board.
1 Like
ryan
thanks for the update I will just have to try the new power supply and keep my fingers crossed.
Olijouve mentioned not putting white foam on my desk because of static electrical charges.
I of course had foam that came on my 3D printer on the desktop to protect the SKR boards. Could this have messed up the low voltage circuit? I agree it’s very odd unless I just got the bad luck of two voltage regulators?
Uploading: C0AD309F-23BF-46E7-8A59-EA69B1AADEF2.jpeg…
Processing: A60C15D3-D8B3-4330-BC64-731DBABEDB57.jpeg…
Uploading: 8B04DCAD-C5B7-45A5-9AEC-FE28EE4FB7B2.jpeg…
![image|666x500](upload://nAEWfrbTQgxBg1DIZSKhSOQnrxm.
Uploading: B7EE132C-43A5-4D63-9EC4-25AB29C28AAE.jpeg…
Processing: E25D1D9E-8011-4F1D-BAAE-0224B20399EF.jpeg…
Uploading: 18AFCDB6-ABC0-4BEA-8A27-8E8F97B4D469.jpeg…