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Forum Index : Microcontroller and PC projects : SD Wifi card?
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| mkopack73 Senior Member  Joined: 03/07/2020 Location: United StatesPosts: 261 |
Anyone try using one of those Wifi enabled SD cards on their CMM2? I'm trying to figure out an easy way to keep the CMM2set up as a standalone setup, but be able to code on my laptop in Windows (so I can keep a Git Repo of my code), but then transfer over the code to test on the CMM2, and do it without having to swap the USB cable to the laptop, or the SD card back and forth. Was thinking one of those Wifi enabled SD cards might just do the trick - but I've never used one before. Was hoping for something where I could just mount it like a SAMBA share to drag/drop the files over to have them sent across the wifi... Thoughts? |
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| matherp Guru  Joined: 11/12/2012 Location: United KingdomPosts: 10315 |
Just use an ESP8266 as a WIFI UART |
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| mkopack73 Senior Member Joined: 03/07/2020 Location: United StatesPosts: 261 |
Certainly doable, but seems a bit hacky - (ie, bits hanging off the back to the CMM2). Although I have been wanting to play around with those 8266 boards for a while.... I just am not ready to risk my shiny new CMM2 board... Just thinking the WifiSD would make it easy to do the xfers. But I've never used one before and don't know which ones support setup as a shared network drive (seems like all the information on them is about using them in cameras to share to smartphones.... UGH) I know some people use these on their 3D printers to push the GCODE files over to print without having to manually swap cards or run off a RasPi using Octoprint... |
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Sasquatch Guru Joined: 08/05/2020 Location: United StatesPosts: 377 |
I really like this idea if it will work! If the SD card could be shared as a "drive" over a WiFi network that would be soooo convenient. Much of what I am reading online seems to indicate that you must connect to it's Wifi directly instead of having it connect to a network? I don't have any experience with them, hopefully someone who has used one will chime in? I might just "need" to buy one to play with.  -Carl |
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Poppy Guru Joined: 25/07/2019 Location: GermanyPosts: 486 |
According to this VIDEO it apparently will not work with SD Cards and other files than films and pics.   Andre ... such a GURU? | ||||
| mkopack73 Senior Member Joined: 03/07/2020 Location: United StatesPosts: 261 |
I know for a fact that's NOT true... as I said, I've seen people do it with 3D printers using the SD card wifi to be able to transfer over GCODE files to print. Unfortunately, what I'm seeing is the Toshiba cards seem to be the most adaptable to this, but they either aren't making them any more or something because they are CRAZY expensive on amazon (like $100 for a 16 or 32GB). I also found this one, but not sure if it'll work https://www.amazon.com/BIGTREETECH-Direct-Wireless-Transmission-Cleality/dp/B088SZQF4Y (you plug in a mSD card to provide the storage element). I'm tempted to just go ahead and get one and see if I can get it working... |
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| Poppy Guru Joined: 25/07/2019 Location: GermanyPosts: 486 |
It still appears "TRUE" to me, but I guess it all depends on the individual product and its special capabilities. This specific Card from the Video seems not to be able to serve anything else than pics and films or it simply depends on any configuration settings that are not shown. !?!?!? Andre ... such a GURU? | ||||
| mkopack73 Senior Member Joined: 03/07/2020 Location: United StatesPosts: 261 |
Well I went ahead and ordered that adapter I linked... Should get here sometime tomorrow. Will see if I can get it to work as intended... Would certainly make coding and testing a lot easier without having to play the SD card swap game... |
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| mkopack73 Senior Member Joined: 03/07/2020 Location: United StatesPosts: 261 |
That's the problem - all the marketing materials are based around use in cameras to send pictures/videos over to your laptop or cell phone for immediate sharing. But a file is a file is a file - it shouldn't matter. Its more a question of whether the firmware on the card provides direct network access - some only give you a web interface to access the card, some will basically allow you to mount it as a file share network drive, etc. We need the later to do what I'm hoping for. I KNOW the Toshiba cards will do it, but they're crazy pricy. I BELIEVE from the marketing video I saw of the interface I bought that it will do it as they use it on a 3D printer, but we'll see. |
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| mclout999 Guru Joined: 05/07/2020 Location: United StatesPosts: 490 |
If the card you get hosts a web page and only list vid and picture formats you could rename your files temporarily to one of those extentions. It is easy in the file manager. Tedious for sure but doable. |
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| mkopack73 Senior Member Joined: 03/07/2020 Location: United StatesPosts: 261 |
See this video (this is of the microSD version but it should be the same for the SD version I ordered): https://www.youtube.com/watch?v=RibMBvVcEI4 You'll see that near the end they have it working as a mapped network drive that the windows machine can just drop files into as a drive.. Fingers crossed that it'll work in the CMM2... I should know tomorrow night after the unit comes. |
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| mkopack73 Senior Member Joined: 03/07/2020 Location: United StatesPosts: 261 |
Ok, got the adapter in... In my prusa Mk3 it works (but OMG the transfer speed is UNGODLY slow...) like sending over a few 1K files took it a while and it had errors along the way... Could be because it included a 128 MB SD card that might be total garbage... But when I put it into the CMM2 - no dice. It never comes up on the network. The Amazon page did say that it only works in devices that interface over SPI not SDIO so I'm assuming the CMM2 is trying to talk over SDIO... The storage portion of it works fine on the CMM2, just not the Wifi portion... I'll keep experimenting... The CMM2 is a bit far from the base station, but I wouldn't think that would be the cause... I'll try moving it closer though... |
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| mkopack73 Senior Member Joined: 03/07/2020 Location: United StatesPosts: 261 |
Yeah no dice even with putting the CMM2 closer. Has to be the way it talks to the host computer... Anyone know if the CMM2 uses SDIO vs SPI for it's SD interface??? |
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| mkopack73 Senior Member Joined: 03/07/2020 Location: United StatesPosts: 261 |
And yeah it has to be the crappy card they included.. I switched the mSD card out for one I had and the transfers were much quicker and without errors... |
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| Sasquatch Guru Joined: 08/05/2020 Location: United StatesPosts: 377 |
As far as I know all the MicroMites including CMM2 use SPI for SD card access. Hope you can find a solution, I was looking forward to this working! -Carl |
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| mkopack73 Senior Member Joined: 03/07/2020 Location: United StatesPosts: 261 |
I even tried setting the cmm2 to option sd speed normal and fast. Didn’t make any difference. The WiFi just doesn’t connect. Tried putting it closer to the router, nope. Tried plugging it into the SS card slot on my macbook but nope, same thing, doesn’t connect to the WiFi. Pop it into my Prusa mk3 and works every time. :( Also I don’t see a way to set it to a static IP which would be nice as well... oh well $17 experiment and I’ll just use it on my printer. |
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Grogster Admin Group  Joined: 31/12/2012 Location: New ZealandPosts: 9610 |
You could TRY to put your files in a folder called DCIM off the root directory of the SD WiFi card. If they are designed only to look for digital camera files, most cameras store these in the DCIM folder, so it might be looking for that folder, can't find it, so does not connect. Only a guess, but worth a try. Make sure you copy at least one JPG file into that folder, just to be sure. I still doubt you will have much luck with this, but it is an interesting idea to be sure. Smoke makes things work. When the smoke gets out, it stops! |
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| mkopack73 Senior Member Joined: 03/07/2020 Location: United StatesPosts: 261 |
No it’s not that. Like I said, on the Prusa it works perfectly. The WiFi connects up within 10 seconds of power on, and I can access the files over the network just fine with them in the root. I can ping it’s up from other machines on the network, etc. When I use it in the cmm2 it just never establishes the connection to the router to get an IP address. I’ve tried hitting the reset button and the boot button on the card but to no avail. Same problem if I try to plug it into my macbook’s sd slot. (Those 3 items are the only ones I have that take full sized SD cards...) No idea why it’s not establishing the WiFi connection on other devices but do on the Prusa. Edited 2020-07-22 08:51 by mkopack73 |
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