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June 21, 2012 at 6:25 pm in reply to: Travel per Revolution set to 1mm, stepper turning only 3/4 of a turn when asked to move 1mm #2596
lpdc
MemberHello again.
Sorry about previous post, you can disregard it.
I replaced the 12V power supply with a 19V laptop power supply and now the motor is behaving as it should (plus I can use a Velocity Maximum of 1000mm/min without the motor dropping steps)
Either there was something wrong with my ATX power supply or 12V was simply not enough and the motor was dropping steps.Now everything is fine.
Alden, Riley, you can either delete this thread entirely or leave it if you think it might help someone else.Once again, my apologies for posting too quickly.
Fabrice
MemberYou made it to Hackaday.com. Congratulations !
It’s good to add visibility to anything related to TinyG.MemberHi Matt,
This is what I feared indeed. we’ll see if proper USB host support will become available at a later date. I had my hopes risen when I saw I could use a mouse keyboard or external hard drive.
thank you very much for your help and dedication though.
Fabrice.MemberMatt, I tried the new version and regardless of whether I hit “search” or “Connect”, I get the same message : “Search failed to find any TinyG USB devices attached”
Some more food for thought :
if you look at the screenshot uploaded above of the USB Device Info App, you will notice that the FTDI is displayed under the “LINUX” tab, if I switch to the “ANDROID” tab, nothing is displayed.
I also tried to install another application called “USB Host Diagnostics v1.2” but this application does not see any USB device (even when I plug in a simple mouse)
Here is a screenshot of this app’s screen :
http://www.freeimagehosting.net/ee6frWhat do you think of the “android” and “linux” tabs in the USB Device Info App ? could this be some user/kernel issue ?
Fabrice
MemberHere you go Matt:
http://www.freeimagehosting.net/tgy3x
all the required info should be on the screen grab.
One last thing that may or may not be relevant, when I first boot the tablet and plug in TinyG, it does not show in the USB diagnostic tool. If I plug in a mouse for instance, then after it is unplugged and replaced by the TinyG board, it shows up in the diagnostic tool. Not sure if I put this clearly, basically, tinyG will only show up after another USB device was plugged at least
once in the port before.MemberMatt,
I installed the USB service from Github and now I have both apps at V1.3.
When I tried connecting to the board I got the “No TinyG USB devices attached” message.
There is however something that looks wrong :
I can find TinyG for android on Google Play but not the USB service. Until now I always used the .apk files that you uploaded on github but I just noticed that if I followed the link you provided above for the USB service on google play, I don’t get an “install” button. Instead, I get a message that says “your device isn’t compatible with this version”
Would it be possible that the .apk from github installed only partially due to some silent incompatibilities ?Maybe we could try to work on this through email in order to avoid filling up this thread. What do you think ?
Cheers,
Fabrice
MemberHi Matt.
It is great that you managed to get gcode streaming working.
On my side, I update TinyG for android through google play store and then I downloaded the USB service from your Github (version 1.0 it would seem)
now, when I plug in the board and try to connect through TinyG for Android, the service does not crash anymore but I get a window message telling me that no TinyG board could be could be found (do not recall the exact wording).
For the records, here is a screen shot of the USB diagnostic tool.<img src=”http://www.freeimagehosting.net/t/d6pke.jpg”>
http://www.freeimagehosting.net/d6pkeDo you think I am missing some drivers or is your USB service supposed to replace the drivers ? I doubt that it matters but when I tried this, although the board was fully powered, no motor was actually plugged in.
Do not hesitate to tell me if I can help you diagnose the issue in any way.great work,
Fabrice
MemberOk Matt, so I gave it a quick try.
I installed USB service and followed your procedure.
When I plug in the USB cable, both LEDs near the mini USB connector blink twice and turn back off.
Then when I open TinyG for Android, no values are displayed and if press “refresh” then I get a message saying that “Unfortunately. TinyG USB Service has stopped”. If I try to press on refresh one more time, then it is TinyG for android itself that crashes and quits.I hope I can be of more assistance when I come back.
Cheers,
Fabrice
MemberI received my TinyG today.
Plugged it into my PC for a quick “$s”. Everything was fine.
Plugged it into my ICS tablet and found the FTDI chip was detected by the “USB Device Info” application but there seems to be no drivers for it that my kernel can use(no serial port detected by either pyserial or Matt’s TinyG for Android).I will have to investigate how I can get the driver before I can help you beta test Matt.
I am leaving tomorrow for a business trip so this will probably take a while.
Cheers,
Fabrice
MemberGreat Demo Matt ! The video really shows it well.
I installed your app on my ICS tablet but I can’t test it yet as I still have not received my TinyG (last update on the USPS tracking website dates from May 17th, I suspect that all those bank holidays in France are delaying the whole thing).MemberThanks for the update Matt.
I haven’t received my TinyG yet, hopefully it should arrive next week.
The first step for me before I can test your code will be to check if the Kernel drivers for FTDI are installed and if not, to find a way to source them.Fabrice
MemberWell noted. I’ll keep to the standard way first while you carry out the experiment then 🙂
This seems so simple that there has to be a catch…MemberThank you Alden.
In this case, do you think I could solder 2 wires from the female mini USB connector to the +5V input?
I was hoping to receive my board today and play with it during the weekend but it has not made it yet…MemberRiley,
Thank you for the link.
This seems that it is a very nice all-in-one package for a reasonable price.
I intend to test TinyG with an ATX PS for the 5V and a laptop powers supply for some 19V @9amps. This has the advantage of being free for now but I may be interesting in upgrading at a later time.Bonus question : I was wondering, why is the 5V from the USB not used ? Would it draw too much current ? Would it be possible to cut another USB cable to bring the 5 V to TinyG or would it still be too weak ?
Cheers,
Fabrice
MemberMatt,
Thanks a lot for these details.
I will have a look at your github files and will be eagerly following your progress.Fabrice
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