Once you turn on the machine it doesn't read the USB drive. You have to unplug the USB stick and plug it back in to get it to read. It seems intermittent like something else might be causing it, but we can't pin it down. And we're not sure if it happens on every machine since it seems intermittent.
Make sure you have the newer, REV C, version of the USB Reader board. The REV B boards, which I believe were used in some early Quiver machines, had a crystal oscillator. I found that the crystal oscillators did not turn on reliably (some taking more than 10 seconds or not turning on at all) and redesigned the board with a MEMS oscillator module. I have not seen a boot up issue with the new design but, if you have a REV C board, please send it to me so I can analyze the problem.
We're having an issue now on a couple machines where right in the middle of the print we'll have a USB read error kill the print. Not sure if its the USB sticks or something else. Hard to replicate so its hard to tell whats causing it.
So we're still seeing this issue. I had one today that would not read the USB stick on boot up, but it read a different USB on boot up. The one that will not read on boot up will read if you remove it and re-insert it while the machine is on. I put a red tag on the USB stick that did not read on boot up.
I took a look at some that were failing out for this reason and believe it to be a USB quality issue more than anything. I snagged a batch of USB drives from calibration that @paulette mentioned they were failing on machines in T7205. While the gcode is the same between files, I have had a few fail for random USB drive errors that are difficult to reproduce but do appear localized to those drives.
Perhaps an alternative source may bring more consistent results?
The part number for these USB sticks is EL-MS0543 and here is a link to the supplier's product page: https://www.theideacatalog.com/specialtyinc/product.cfm?uid=2003663
I have 9 drives that have been tagged by production since start of quiver production. I'm running badblocks on one of the drives that production was having issues with now to see if it flags any bad sectors.
@jperry can you please contact Kingston and find out if they can screen our logo onto these drives and if there is an MOQ and if there is a price break at quanity?
I wrote all these drives with the NexCopy. 100/100 of the DTSE9 drives passed the copy+compare process. I'm running a vernier_dim-test print with each one now to check if there are any drives that aren't recognized or have errors during the print. So far, 8/8 of the drives I have done a test print with have passed with no issues.
I was able to complete a vernier test print with all 99 flash drives that I tested (@DaniAO has the last one). There was an issue with two of the drives where it didn't read on the fist plug in, and threw a USB read error when the drive was removed. After the machine was power cycled in these two cases, I was unable to reproduce the issue, and was able to complete the test print without any further issues.
Based on this testing, I recommend removing the EL-MS0543 drive and replacing it with the OF-CP0418 drive.
@DaniAO I am assigning this to you for now, let me know if there is anything else I can do to help resolve this issue.
Tom, how many are in stock of the old ones? If there are a number of them I'd like to test them use the ones that are good and get credit on all bad ones. This should be done via NCMR/Red Tag tickets that Kent/Josh can help process once we have numbers.
Once we get that number, we will need to have the BoM changed with the new part number and vendor if it is decided that this will be the change on this issue going forward. Kent, can you help run this process?
We have 662 on hand of the EL-MS0543 and were purchased at $3.83. The new version from Kingston is 4.99 and we only quoted up to 150 units. I emailed them for a new quoter and lead time.
I emailed Kingston to get volume pricing on 500 and 1000 pcs as well as the lead time. Kingston only offers limited custom runs of these up to 150 units. Anything outside of of those quantities they do not do any custom logos. Dani G and I decided to source a label from My Asset Tag that we can place on the side of the USB. I will create a part number and get some samples on order.
Will a sticker work for branding? If we add a sticker then we are adding labor costs to apply the sticker to the USB. We would order more than 150 units for production so this shouldn't be an issue with customizing a logo. For samples we do not need them customized I don't think. Dani or Planning would make that call.
I think the hang up is Kingston will do 150 MAX with the logo and we need more then that.. so the sticker was another option. But after talking to marketing.. the branding isn't required. It is preferred to get a USB drive that works.
Kingston will only do custom branding up to a total of 150 units. Anything over that quantity they do not do custom branding and we would need to order from a distributor for any quantities greater than 150 branded/ unbranded. The USB starts at $4.99 before any branding and I'm sure the cost would be higher than if we did it in house. I got a quote from Sticker Giant and each label would be $0.176.
Just had a Pro act up when I flashed to .135 with a USB drive inserted. The printer was stuck in a reset loop after flashing. I powered off the printer, took out the USB drive, then it powered on fine. I thought maybe it had corrupted the USB drive somehow but after resetting the printer and re-inserting the drive it seems to work fine. This is with the older green flash drives as well.