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#1 Re: Help and Support » mosfet low output voltage » 2017-11-20 20:44:16
NO no the stepper is powered by a seperate 12v supply, its only the light at the moment I have through the Pi 5v pins, just while i get it going then more is available seperately.
Ill try this jpg file for the sketch of the mosfet. its looks right to me????
#2 Re: Help and Support » mosfet low output voltage » 2017-11-20 00:57:28
Hey Bigfilsing
Its fairly simple on the set up I think maybe the power source is best not being the pi itself but I checked the incoming and its 5v, just dont get why its not passing it through
the mosfet is the wingoneerIRF520 from amazon, tried 2 and both the same.
swapped the power roound so the 3 v was to the lights and the 5v to the signal and the output v went to .1v, so seems to be a fraction of the input v.
glad to hear anything
Mike
#3 Help and Support » mosfet low output voltage » 2017-11-19 22:17:16
- myk68
- Replies: 7
Hi All
So I now have a 20 3W LED light matrix for the exposure.
I have a mosfet set to the Pi with 3v and signal input, currently 5v in for the light.
BUT
on start up 2.5v hits the lights, when I then open the shutter, this is where the light switch is controlled by( is that correct), then only 0.3v hits the lights.
I dont get it???
Is the shutter switch the wrong thing to use, there didnt seem to be anything else to use.
is the voltage lever then controlled by the servo pulses.
any advice would be appreciated. thanks for reading
Mike
#4 Re: Help and Support » no image on LCD when print running » 2017-10-18 10:10:45
Shahin, your a marvel, didnt realise that wasnt needed.
THANK YOU
#5 Re: Help and Support » no image on LCD when print running » 2017-10-17 21:38:11
Has that given any clues Shahin?
#6 Re: Help and Support » no image on LCD when print running » 2017-10-17 01:30:08
Ok, just after startup
nanodlp.debug.-312566051.zip
and about 10 layers in, no layer skips that i could tell just nothing showing on screen
nanodlp.debug.-1094497023.zip
#7 Re: Help and Support » no image on LCD when print running » 2017-10-16 10:26:15
i think that should be it.
#8 Re: Help and Support » no image on LCD when print running » 2017-10-15 23:38:57
does not seem to. it cures for 3 seconds lifts and moves on but nothing on screen
#9 Help and Support » no image on LCD when print running » 2017-10-15 14:07:54
- myk68
- Replies: 9
Hi All
well my self build is almost there however... lol
If I go to plates and chose the print I want, then go to layers and click display layer
IT WORKS.
hooray!
BUT
when I run the print then NOTHING shows on the LCD.
Please what hae I missed.
Im running the basic setup RPI3, LCD, 1 stepper, 2 end stops...
MIke
#10 Re: Help and Support » stepper engaged but no movement. help » 2017-09-22 01:28:57
sorry I dont understand what you mean?
#11 Re: Help and Support » stepper engaged but no movement. help » 2017-09-21 11:49:26
ah haa I appologise I had the direction and stepper pin the wrong way round in settings. I have motor control but
the end stop is reversed. With something in the endstop, its optical, the motor works up and down. with nothing in the it only goes down which is correct if the stop is triggered
I cant see an option to revearse this??
#12 Re: Help and Support » stepper engaged but no movement. help » 2017-09-21 10:58:35
Direct
#13 Re: Help and Support » stepper engaged but no movement. help » 2017-09-20 16:50:10
Hi Shahin
Ive changed the spped to 100 and to 100000 with no change. limit switch do you mean end stop as i have that disconnected and disabled
if i type g code in to the terminal nothing happens either. using the z calibrtation page I get a short buzz and minute movement, nothing more
just in case i tried a python script on the motor and it works fine and moves ok so i know the wiring and motor are fine its something with the settings on nanodlp
All I have is the Pi3, the DR8825, and the stepper(nema17). WHAT am I missing.
I dont want to go the ramps way this is supposed to work with just what I have.
help please
mike
#14 Help and Support » stepper engaged but no movement. help » 2017-09-18 12:29:41
- myk68
- Replies: 8
Hi all
so wiring sorted I think. I can now engage and disengage the stepper. BUT when I try to move the motors on the plus they pulse once, moving very slightly, on a minus move nothing.
also the mesurements on the z calibration screen move in just less than 5mm increments
then actuator settings are default except micro steps that I changed from 8 to 16 but no difference
any ideas
mike
#15 Re: Help and Support » stepper not working » 2017-09-17 20:41:12
yes both ways. did have the meter on the ground and pot and didnt get anything though and that is on two 8825s??
#16 Help and Support » stepper not working » 2017-09-17 16:34:28
- myk68
- Replies: 2
Hi
I feel such a noob with this build lol
this is a pic of how i have it all connected. I've set the sleep and rest pins in the dashboard,.but still no movement
what have I got wrong
Mike
#17 Re: Help and Support » help with initial nanodlp instal on rpi3 » 2017-09-16 02:25:47
Think I've resolved it.
Stretch doesn't have the libraries correct yet
Changed to Jessie and I think I'm in business
Bed time now try it late :-)
#18 Re: Help and Support » help with initial nanodlp instal on rpi3 » 2017-09-16 01:29:54
Hi, thanks for the help.
yes I can ping it fine and SSH and putty works fine too
running manually gives-
pi@raspberrypi:~ $ cd /home/pi/printer
pi@raspberrypi:~/printer $ sudo ./printer
./printer: error while loading shared libraries: libGLESv2.so: cannot open shared object file: No such file or directory
pi@raspberrypi:~/printer $
so I'm missing something arent I
#19 Re: Help and Support » help with initial nanodlp instal on rpi3 » 2017-09-15 16:23:28
Ok thanks for the confirmation
I have the IP address but putting that in a browser says
This site can’t be reached
192.168.0.35 refused to connect.
and https://www.nanodlp.com/dashboard
says no printer connected?
Where do I get an online access key?
#20 Help and Support » help with initial nanodlp instal on rpi3 » 2017-09-15 15:44:01
- myk68
- Replies: 7
Hi
I have been trying to get this working for the last 2 days to no avail.
I'm trying to build a printer like Ionel Ciobanuc but there isnt much info about how things are linked in his videos. As far as I can see there is only the Rpi and DRV to control it all.
once installed it seems to run, I get a blank screen but cant find the printer/pi on the dashboard.
After trying to load it afresh I have notice I'm getting
cp: cannot stat '/home/pi/printer/distro/generic/req/*': No such file or directorydir
just before the optimize rpi question.
Is this the problem, I'm missing something from this folder??
Any help is appreciated an I apologise if this has been asked before
Mike
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