FNIRSI-1013D AS MUCH USE AS A CHOCOLATE FIREGUARD.

[Gannet]

I HAVE A YEAR 2020 FNIRSI-1013D scope which has gone haywire.
The ID on the memory card is 2020 ZFSN3-4

It does boot up but sometimes not.
It intermittently switches itself off.
When it is on I often have no time base running
I have checked the battery it seems ok
I runt it from my desktop PSU and it draws around 1.35Amps at 5VolsDc

I have posted two pics, one with the timebase (Sort of running) the other is just junk.
It would seem to me that there could be a power issue, I dont know.
Would an updated firmware help, I know nothing about Linux.
Where do I start, any help would be most welcome.
Regards all.


If this post is in the wrong area would Mr. moderator move it to the correct one, please.

[pcprogrammer]

Hi Gannet,

welcome to the forum.

It is always difficult to diagnose something like this without having the device in hand, and yours is the old version by the looks of it. The firmware running on yours looks different from what I reverse engineered, with the blue and red traces, so can't tell if what I made for the scope will work on yours.

The schematics of the newer version can be found here: https://github.com/pecostm32/FNIRSI-1013D-1014D-Hack/tree/main/Schematics For as far as I know, the only difference is in the FPGA used in the older model.

Did you read the thread about the scope here on the forum? https://www.eevblog.com/forum/testgear/fnirsi-1013d-100mhz-tablet-oscilloscope/msg4525100/#msg4525100 There is lots of information in it.

I have not measured the current being drawn by mine, but I think the 1.35A is a bit high.

Since your firmware looks different I can't tell for sure, but the newer version is for sure not based on linux, and I doubt that yours is.

A picture of the PCB can help in identifying your model.

[Gannet]

Thanks for the reply,

I have attached a pic of the PCB

Hopefully that will help identify which version I have.

[pcprogrammer]

It looks the same as the one here https://github.com/pecostm32/FNIRSI-1013D-1014D-Hack/blob/main/Pictures/Old%20version/Main_board_old_system_large.jpg

This picture was taken by Dave and he did a review of his version. https://www.eevblog.com/forum/blog/eevblog-1317-$140-2ch-100mhz-fnirsi-tablet-oscilloscope-review/

But his version has the yellow and green traces, so yours is a bit special. Would be interesting to get the firmware out of it. I wrote software to do it but it involves writing to the SD card. Let me know if you are willing to do this, and if you have a SD card reader/writer you can attach to your computer and also how big the SD card is that sits in your scope.

[Gannet]

The board looks the same as the one you pointed me to.
The SD Card is 1Mb
I have an SD card reader.
Can I load the firmware to a new card rather than overwrite my existing one.
Is there any special software that I need to use to copy the image of the firmware to the new card? Where is the lates working version located?
I have seen reference to taking one of the two isolated plated through holes down to ground (See clip), I have also seen other saying, no not that pin the other one, which is correct.
Thanks

George

[pcprogrammer]

Hi George,

The original firmware is not located on the SD card, but in the FLASH ic near the MCU. The SD card is only used to store images and wave files.

The point on the PCB that you are pointing to is to reset the MCU and is not really needed.

The firmware I wrote can be written to the SD card and does not overwrite the FLASH. The same for the backup program I wrote.

The instructions to get these programs on the SD card are based on using linux, of which you pointed out to know nothing about. But with basic computer knowledge you can come a long way. It is not that hard. Linux can be used from a live USB stick or in a virtual machine.

You write that your card is 1Mb, but most likely you mean 1GB, because that is what the early models were shipped with. Mine has 8GB, but that does not matter. The new firmware uses less then 300KB, so no problem with a smaller card.

To make the backup of your scope the binary plus instructions can be found here https://github.com/pecostm32/FNIRSI-1013D-1014D-Hack/tree/main/Test%20code/fnirsi_1013d_firmware_backup/Binaries The actual file to load is fnirsi_1013d_fwb.bin

More instructions on prepping and loading the SD card can be found here https://github.com/pecostm32/FNIRSI_1013D_Firmware

What this does is make a backup of the FLASH and touch panel configuration and stores them on the SD card. I made a video about it.



With the scope connected to the computer you can copy the three needed files to your computer and post them here.

Let me know how it goes.

Regards,
Peter

[Gannet]

Thanks Peter,

I have two old Raspberry PI's, Maybe I'll resurrect these and install Linux, what do you think?

Regards

George

[pcprogrammer]

That is a possibility, but you might be just as quick by installing linux on a usb stick and boot your computer with it. Perform the needed actions and when done remove the USB stick and restart your Windows (I assume that is what you use) machine.

There are lots of examples on the net on how to do that from Windows. Even with the installer for linux mint you can test drive without actually installing it on your computer.

[Gannet]

That sounds like plan Peter, I'll give it a go.

George

[Gannet]

Hi Peter , I downloaded Linux Lite v6.2 and it appears I have made a bootable usb Drive.

Please see screenshot.

I'm a bit wary of trashing my pc so gently does it what next.

Cheers ,

George

[pcprogrammer]

All you needs is a command terminal and access to the file to transfer to the SD card.

If all is well the linux you have running from the USB stick has internet connection, so you can go to the repository and download the file on to the USB stick. Then open the command window with "ctrl - t" or "ctrl - alt - t". At the command line you can then type the commands, but make sure you select the right target.

So first connect the SD card reader/writer with the SD card inserted into the computer. This will mount the SD card automatically if all is well. At the command prompt type "lsblk" and then enter. This will list the block devices.

Code: [Select]

NAME   MAJ:MIN RM   SIZE RO TYPE MOUNTPOINT
sda      8:0    0   3,7T  0 disk
└─sda1   8:1    0   3,7T  0 part /home/peter/Data
sdb      8:16   0 111,8G  0 disk
├─sdb1   8:17   0  55,9G  0 part
└─sdb2   8:18   0  55,9G  0 part /

It will show something like the above. The SD card might show up as sdc ..... 1G 0 disk and the line below will show ---sdc1 .... 1G part .......

This gives you the name of the device you need to work with.

Maybe it is best to save a screen shot of the listing and post it here. (You can use the PrtScrn button to make the capture and then post it here)

We can then take it step by step, just to keep your system safe. But it is about my bed time, and tomorrow I'm a bit busy, so be patient

[Gannet]

Thanks Peter, as they say Rome wasn't built in a day.
Have a good weekend.

George

[pcprogrammer]

I tried my scope with a bench power supply and at 5V on the battery terminals it draws ~1A.  Yours has a different FPGA, but 350mA is quite a bit extra, so you might want to check the different voltages in the scope and feel if parts get extra warm.

[Gannet]

Hi Peter, I feel like I moved mountains. Hopefully my copy of my screenshot is attached.
Nothing inside the scope is getting unduly warm.
No how do i get that file onto my usb drive sdc/sdec1

Cheers

George

[Gannet]

Welcome to Linux Lite 6.2 linux
 
Sunday 20 November 2022, 13:47:29
Memory Usage: 1063/15913MB (6.68%)
Disk Usage: 483/7GB (7%)
Support - https://www.linuxliteos.com/forums/ (Right click, Open Link)
 
 linux  ~  lsblk
NAME        MAJ:MIN RM   SIZE RO TYPE MOUNTPOINTS
loop0         7:0    0   1.9G  1 loop /rofs
sda           8:0    0 931.5G  0 disk
└─sda1        8:1    0 931.5G  0 part
sdb           8:16   1     0B  0 disk
sdc           8:32   1   3.7G  0 disk
└─sdc1        8:33   1   3.7G  0 part /cdrom
nvme0n1     259:0    0 465.8G  0 disk
├─nvme0n1p1 259:1    0   100M  0 part
├─nvme0n1p2 259:2    0    16M  0 part
├─nvme0n1p3 259:3    0 465.1G  0 part
└─nvme0n1p4 259:4    0   593M  0 part
 linux  ~  

Hmmm, that's better :-)

[pcprogrammer]

By the looks of it /dev/sdc is your USB stick with linux on it.

/dev/nvme0n1 is your internal m2 disk which will hold your Windows. It is not mounted and best leave it that way. /dev/sda seems to be a 1TB disk, that also is not mounted. But there is some presumably ramdisk mounted at /rofs.

This will be where you can download the needed file from my repository. It most likely will do this automatically when you use firefox (I assume that to be the default browser that came with Linux Lite) There probably will be a download folder.

But the thing to find out is at which device the SD card will be connected. So insert the SD card into it and connect it to the computer after you booted into Linux Lite. It should mount it. Then use the "lsblk" command again and show me the resulting list.

[pcprogrammer]

Nothing inside the scope is getting unduly warm.

Well that is a good thing. Lets see if the scope will do the backup and if it will run my firmware.

Regards,
Peter

[Fungus]

Seems to me like it was actually very useful for the first two years.

Otherwise you wouldn't care that it broke. 

[Gannet]

I did like it.

George

[Fungus]

I did like it.

George

I'm just confused by the title of this thread...

[Gannet]

Well! as it is it's as much use as a chocolate fireguard or even a teabag without holes, pardon my weird sense of humor 

[Fungus]

Well! as it is it's as much use as a chocolate fireguard or even a teabag without holes, pardon my weird sense of humor 

The expression is used for things that are useless by design, not for things that broke after years of being useful. Hence the confusion.

Anything can break.

[Gannet]

I do appologise if I have offended you, just frustration on my part. I do expect devices such as these should not go down after such a short time. This BB with all the messages we see and for all the conjecture created does not in my opinion reflect that of a quality piece of equipment.

[Gannet]

Hi Peter, I have ordered a new 8Gb Usb memory card.
I'm assuming I can use that to load the files you are pointing to and that there is no need to install linux lite 6.2 onto the new card.
I will still need managing once I have the card, so I hope you don't mind if we continue our dialogue.

Best regards

George

P.S looks like you may get a Haggis for your tea if were successful

[pcprogrammer]

Hi George,

no problem. I check the posts regularly.

There is no need to install linux on the SD card. Just need to copy the backup software to make the backup of the flash and then the new firmware. The new card most likely will be formatted as needed, but if not I will guide you through the process.

Regards,
Peter

P.S. Rather have biscuits with my tea