HTTP/1.1 200 OK Date: Sun, 21 Nov 2021 09:37:13 GMT Server: Apache/2.4.6 (CentOS) PHP/5.4.16 X-Powered-By: PHP/5.4.16 Connection: close Transfer-Encoding: chunked Content-Type: text/html; charset=UTF-8 2024 octoprint not connecting to printer I’ve seen a lot of people with unstable /tmp/connections or they had/lost their connection. Some log data below, let me know if I can provide anything else. 3. Many 3D printers allow this ability over a USB cable connection. Save, then reopen the same settings page. The most common method of connecting the devices is by Sep 03, 2018 · Printing from SD Card and especially Micro-SD Card (the Ender 3) where it is easy to miss-insert makes operating from OctoPrint a no-brainer. Multiple Printer Setup May 15, 2020 · Ok, now let's finalize the settings here. With the current Prusa firmware (v3. ) to octoprint. Apr 27, 2021 · A new hook octoprint. Some of these printers have a higher print speed per minute while others excel at producing incredible detail and color. 2560 But here OctoPrint runs 24/7 but I turn off the printer when it is done with printing. Yo There are several types of printers, and the way you plan to use a printer can help you choose one that fits your needs. The least expensive method is to share a printer that is connected to a computer You’ll be amazed at the things you’ll see when you go up on the roof. This first bugfix release for 1. But one Raspberry Pi for each printer doesn’t make sense. May 10, 2018 · When OctoPrint attempts to connect, you will see the following: Send: N0 M110 N0*125. Use. Jan 03, 2012 · Set up every printer you have and create a working profile for every. During the first printer is printing, you are not able to connect to a second one without disconnecting the connection to your actually printing printer! Most likely it's because the Raspberry Pi (or whatever computer your OctoPrint runs on) has not had reliable internet connection. Temperature Commands. Then provide the resulting serial. What is OctoPrint OctoPrint allows us to control 3D printers through a network, whether it’s wireless or wired. Octoprint can run on a variety of systems, but the most popular and convenient option for most people is to dedicate a Raspberry Pi to the task. Click “Setup” to enter your OctoPrint details. 2) In the Printer Settings window, select your third-party printer from the Printer Type menu, then set the Default Action for G-Code Export to “Upload to OctoPrint”. x3g) — then, the GPX plugin will convert that GCODE to . 7. Go to OctoPrint Settings → Serial Connection : Set Additional serial ports to /dev/ttySmoothie. Otherwise the USB connection will not be able to connect. Here's what you can do: Go to the OctoEverywhere home page and see if the printer is already listed. However, right now, every time I try to connect to it through OctoPrint, I just get gibberish back: Oct 22, 2014 · Hi, after I restart my Bananapi yesterday, OctoPrint doesn't connect to my RAMPS 1. 0-dev-254-g9a7733c (devel branch)" now. At this stage, you are then able to plug in all of your printers but only able to connect to and print with one at once. Also, if your are using a Sailfish printer, you’ll need to modify the printer profile settings (on your AstroPrint Cloud account) to send GCODE (NOT . We have a Lulzbot Mini at my office (i. yaml: ''' octoprint:  9 ธ. Installation of a touchscreen and Octoscreen on a printer such as the Ender 3, allows for controlling Octoprint directly in front of the printer without needing a PC or smartphone. Compiled over the years from the fron Your source for printer reviews by Digital Trends’ expert reviewers, including brands such as HP, Epson, Canon, Kodak and more. I could not yet figure out how to set a temperature or send the printer to the home position yet. 0. 3. Jul 30, 2019 · I noticed that it looks like you have added an Ultimaker S5 type printer in Cura and named it FFCP. Excerpt from OctoPrint log: Jul 06, 2020 · Connection to printer established. Proceed to Octoprint Web UI. baudrate: Optional, specific baudrate to connect with. Step 3: Turn on debug logging and look for the needle in the haystack. x fixes two bugs discovered in 1. After the installation is done, you will have to Quit CURA once and start it again so the Plugin gets activated. OctoPrint is a web interface for your 3D printer that allows you to monitor and manage your 3D printers over a network connection. log file with your favorite editor and look for errors. The scan button on your printer allows you to switch from print to scan mode. This plugin is supposed to fix this by invoking a specific serial port opening sequence that has been found to solve this Oct 05, 2021 · The solution is that I have to sent command echo FIRMWARE_RESTART > /tmp/printer from the octoprint terminal not once but TWICE and then connect the printer from the octoprint web UI. May 06, 2018 · Then try connecting to your printer. Dec 10, 2020 · VII - Connecting OctoPrint or OctoPi to Your 3D Printer. Open octoprint. Configuration. 6. It's just not Octoprint compatible as Octoprint is someone else's open source project that relies on a printer being connectable with USB slave functionality (which actually OctoPrint auto-connect If the other 2 solutions do not work, you can find an OctoPrint button inside the control panel if you are on the same network as your printer. The best scanner-and-printer combinations make it simple to get all of your work finished without forcing you share space with separate printers and scanners. Connecting OctoPrint and Cura could not  1 พ. Most likely it's because the Raspberry Pi (or whatever computer your OctoPrint runs on) has not had reliable internet connection. Now click Print and watch your printer jump into action! OctoPrint has scores of community-created plug-ins, but our favourite, Octolapse, makes beautiful hypnotic time OctoPrint auto-connect If the other 2 solutions do not work, you can find an OctoPrint button inside the control panel if you are on the same network as your printer. handle_connect is now in place that allows plugin developers to hook into the process of connecting to a printer, prevent that from going through or triggering actions based on it in a synchronous fashion. 2563 Im running a Taz 5 on a Mac using Cura. Jan 29, 2021 · When enabled OctoPrint will not connect to the printer, disable it and OctoPrint is working fine. Navigate to the API section of the Setting Menu in OctoPrint and copy your API Key. Adding OctoPrint to your Home Assistant instance can be done via the user interface, by using this My button: OctoPrint can be auto-discovered by Home Assistant. The most common method of connecting the devices is by Jun 13, 2021 · After checking the Configuration and restarting Home Assistant we have a switch to connect and disconnect the Printer from OctoPrint. But it should be possible using MQTT and/or an API call. Also my printer did not do so well with the SD card expansion board, and having to have a PC tethered to my printer was not fun. )A micro USB power supply fo… One issue we had – from default the prusa i3 Mk3 would not connect to the Octroprint. octoprint May 08, 2018 · To be able to use OctoPrint make sure that your 3D Printer has an available serial port. Plugin might not work if you’ve updated your Elegoo Mars printer to the newest firmware due to issues with Chitu3d encrypting their files so users are forced to use Chitubox 1. So the port I have in my config here is hidden because it is publicly accessible, but port forwarding maps it to the correct port internally for me. If you are 3D Printing chances are you are using Cura to slice your prints. If your printer manufacturer hasn’t worked the Polar Cloud into the native firmware of your printer, it has to be “enabled” after the fact using the community’s Octoprint Plugin. Log back into Octoprint; Try to use Octoprint. Check out this guide to the best printer-and-scanner combinations, and pick the p All-in-one printers are true workhorses, often letting you scan, fax, copy, print, and more in one convenient place. For me, being able to upload from the slicer and being able to monitor my prints from anywhere is the reason I use OctoPrint. 216c ค. Following tutorials from the web, I can now access it using monitor via HDMI and keyboard, as well as using Putty. Maybe something that you will need to check with other makes of printer. 2562 Hello, I need help getting my 3D printer integrated with Home assistant. Upgrade your lifestyleDigital Trends helps readers keep tabs on the fast-paced world of tech with all the latest The BuildBee CloudDock plugs into your 3D printer, connecting it to your Wi-Fi The BuildBee plugin can be installed on your existing Octoprint server to  13 ก. You can ssh, login through serial Oct 18, 2019 · No need to make passive agressive comments, let's keep it civil here. OctoPrint will load and on the top left side, there should be a "Connect" button that can solve the problem from time to time. Go into your Printer Settings in Cura and select Connect to OctoPrint. #!/bin/sh sleep 5 echo FIRMWARE_RESTART > /tmp/printer sleep 5 echo OctoPrint is a web interface for your 3D printer that allows you to monitor and manage your 3D printers over a network connection. Octoprint Easy Setup: While this is written for the Monoprice Select Mini 3D Printer (that for example you can find here on Amazon,) it should work for any 3D printer with a USB port. A Step-by-Step Guide (with pictures) to 1) Making an OctoPrint for your 3D printer from a Raspberry Pi 4, 2) Connecting the OctoPrint to your WiFi network & 3) Connecting the OctoPrint to your Creality Ender 3 series printer so you can remotely control your 3D printer and take time-lapse videos or pictures of printing your 3D models. This works all the time. Also using a fast microSD card and having a strong WiFi connection does not hurt. On OctoPrint, go to Settings (wrench icon) > Features > API and copy the API Key; In PrusaSlicer, go to the “Printer Settings” tab and switch the “Advanced” or “Expert” configuration levels. Instructs OctoPrint to connect or, if already connected, reconnect to the printer. e. BTW, I am Oct 22, 2014 · Hi, after I restart my Bananapi yesterday, OctoPrint doesn't connect to my RAMPS 1. Try selecting the printer port manually, like Your printer is resetting on connect and not getting ready fast enough for OctoPrint to perform a communication Your printer Jul 16, 2018 · Octoprint Suddenly Won't Connect to Printer Rebooted printer and raspberry pi many times Cleared browser history ctrl + f5 Increase timeout limits in "Serial Connections -> Intervals & Timeouts" Searched on google for countless hours Tried with both 1. Now try to connect to the printer. Set Serial Port to /dev/ttySmoothie. Oct 05, 2021 · The solution is that I have to sent command echo FIRMWARE_RESTART > /tmp/printer from the octoprint terminal not once but TWICE and then connect the printer from the octoprint web UI. )") "Workaround": With a manual selection of serial port & baudrate, it is working again. Installing Octoprint need not be a chore on Mac or Windows. There you will see a button called network settings. Let’s follow the directions from the Github page and see what happens? Oct 22, 2014 · Hi, after I restart my Bananapi yesterday, OctoPrint doesn't connect to my RAMPS 1. Oct 18, 2019 · No need to make passive agressive comments, let's keep it civil here. 3) Enter the IP address and API Key in the Setup OctoPrint window, then click “OK”. Jan 09, 2019 · 2. Connect to your Pi on which OctoPrint runs. Connecting Cura to Octoprint is very simple! You only need to open Cura and navigate to printer settings. Step 2, Connect a web camera to the Raspberry Pi. This plugin is supposed to fix this by invoking a specific serial port opening sequence that has been found to solve this Feb 03, 2019 · Connecting OctoPrint and Cura could not be simpler. And there needs to be a bit of delay between switching on the printer and connecting, so I am leaving this on 10 seconds. It's just not Octoprint compatible as Octoprint is someone else's open source project that relies on a printer being connectable with USB slave functionality (which actually Jul 30, 2019 · I noticed that it looks like you have added an Ultimaker S5 type printer in Cura and named it FFCP. Aug 13, 2016 · I tried to set up octoprint, but it won't connect to my network. We'll cover these steps in detail and you'll be up and running in no time. What happened instead? Printer restarted (as expected when connecting) but Octoprint reported a failure to connect ("Offline (Error: No more candidates to test, and no working port/baudrate combination detected. This is the main integration to integrate OctoPrint sensors. I have been a Cura user since its inception, I think it's a great software! Today I download version 4. However, some printers might require more complicated methods that we won’t be touching on in this tutorial. 9. Step 3, Connect the Raspberry Pi to a power supply. It then runs through its' setup() routine. You will need:A Raspberry Pi 3B (for example here on Amazon. 4 anymore. It provides you with a convenient way to send G-Code to the printer, kick off the print, monitor the print via webcam, and pause/cancel the print all in a beautifully structured user interface. « OctoPrint On Air #39 New release: 1. Sep 03, 2018 · Which means when you connect to local 127. You can upload files directly to the OctoPrint server without copying to an SD card. We wanna do an auto-connect, after the printer has been turned on, otherwise OctoPrint cannot talk to the printer. 5: USB disconnect, device number 6 9 ม. I just received my QiDi Tech 1 printer two weeks ago. Apr 03, 2019 · ~If your printer doesn’t connect, try changing the “Baudrate” (115200 usually works), or change the “Serial Port” and its corresponding permissions. Due to some weird issue with some Malyan/Monoprice printers, the initial connection to the printer via the Connect button may fail. You will see the following: Send: N0 M110 N0*125 Jul 30, 2019 · Hi, this is the first time I write in this forum. 1:8080 Putty will then forward that via the ssh connection that is actively connected to your home server to ip 192. 0), on the very first attempt to connect via USB -> serial, the printer resets. 2559 When i do dmesg and re-connect the printer i do get: [ 462. You can purchase a scanner separately or with your printer, and scan the documents directly from the scanner or by using the software that came with it. Install the OctoPrint Add-On for Cura (available in the Marketplace) Paste your OctoPrint API Key. 168. พ. The Ultimaker S5 can not be controlled with OctoPrint (it has no exposed serial port to communicate with OctoPrint), so the plugin does not offer to let you connect with it. This all goes over ssh and is not in the clear. 646368] usb 1-1. I've had an OctoPi (Raspberry Pi running OctoPrint & connected to my 3D printer) for well over a year and I only regret not having this app sooner. I’m not planning on incorporating Sep 26, 2020 · Annoyed by downloading and uploading from Cura to OctoPrint for 3D printing? Learn how to set up the Cura OctoPrint Connection plug-in. Set Baudrate to maximum: 250000. Jan 29, 2017 · Frankly (my opinion here) I would not worry about the printer USB port. #!/bin/sh sleep 5 echo FIRMWARE_RESTART > /tmp/printer sleep 5 echo Newbies Guide to Installing and Configuring Octoprint on a Raspberry Pi for 3D Printing: If you have read any of my other instructables, most noteable the Complete newbie step by step, 3D printer with all parts lists, you know that I remember my own frustrations at incomplete instruction and guides even after I finally figured out the p… Everything seemed to be going smoothly until I tried to connect to the printer; the Pi didn't seem to be able to pick up a usable Baudrate (after being trying out all of the usable ones). 9rc2 and 1. Sep 01, 2017 · Greetings all, I am new to this group and to 3D printing. Some screens don't take up the entire Raspberry Pi header; this is okay, it just means they're compatible with older Raspberry Pi models too. Check out these best reviewed laserjet printers, and pick the perfect printer for your life and your work. x3g. However, we recommend to check out our guide covering: Feb 02, 2021 · If your OctoPrint setup uses a camera, attach the camera's ribbon cable to the Pi before connecting it to the screen. 2075 ) I assemble my printer, connect the Pi, and connect Octoprint using the default serial settings. BTW, I am Aug 13, 2016 · I tried to set up octoprint, but it won't connect to my network. octoprint-cli temp status - get current and target temperatures of extruder and bed. For that, we suggest checking out Octoprint's own resources. 2. Added basic support chituboard based printers (Elegoo Mars, Anycubic Photon, Phrozen, etc. Then, carefully push the screen onto the Raspberry Pi's GPIO header. printer. 2564 Insert the SD card in the Raspberry Pi, plug in the printer and connect the power. Multiple Printers can run on the same RPi but not Out-of-the-Box (OOB). Click on the power menu in the top navigation bar; Click 'Restart Octoprint' You're interface will notify you that it is not connected to the system, and then prompt you to reload once OctoPrint has restarted. While there are various ways of achieving this. 100. The fix here is quite simple; disconnect the micro-USB cable going from Raspberry Pi to printer, turn off the printer and keep it shut down for at least 10 seconds, turn on the printer, wait a few seconds until it's properly booted, connect the cable again and it should work. The process of connecting your printer to your computer can sometimes be a challenge because of all the various ways this ca All in one devices offer convenience because they take up less space in an office, but is it better to have separate scanners, printers, and fax machines? The only problem with a multifunctioning machine is that if it breaks, you've lost th The best printers for small offices are able to meet the demands of a growing office space and provide you and your team with fast and dependable printing. Additional parameters are: port: Optional, specific port to connect to. For example, when trying out 9600, I would get: Octoprint-Chituboard. Things to consider include how much you plan to print, the types of pages you want to print and your available space. With this setup, you can have independent control of 2 printers with 1 raspberry pi by just switching ports to choose which printer to use. As we do not develop Octoprint, we can not cover all aspects of use. The ip is the octoprint server on your local network at home. There is no 'On/Off' button so as soon as you plug in the  13 ธ. Nonetheless, with a bit of creativity and know-how, we can adapt it and use it with more than one printer. I've tried many times and it still hasn't been able to connect to the network May 12, 2020 · So here in this Plugins Marketplace Tab, scroll down until you find the Octoprint Connection Plugin and click the Install button. If you continue to have problems, go to Option 2; Option 2: Reset Octoprint. I then purchased Raspberry Pi 3 Model B and installed OctoPi. If I leave the serial port and baud rate on auto it says "detecting serial connection" and then jumps to "offline", when I choose the port and baud rate manually, it says "connecting" and then "offline" without any hint on why it is not establishing a connection. In cura i then removed the printer and created a new one, I then in cure selectet manage printer and there I choose the new created printer and conect octoprint, I then pasted the key, After that octoprint connected to my printer. 23 ธ. Remove the OctoEverywhere plugin (make sure to select 'clean up data') Oct 22, 2014 · Hi, after I restart my Bananapi yesterday, OctoPrint doesn't connect to my RAMPS 1. # Turn on debug logging and download octoprint. Oct 22, 2014 · Hi, after I restart my Bananapi yesterday, OctoPrint doesn't connect to my RAMPS 1. 2563 A very common hack to a 3D printer is to connect a Raspberry Pi to your about connecting to printers and there were many other problems. Most of this can be changed later if you realize your filament load settings are not correct so don’t worry too much at this stage. The scann Wireless printing provides the convenience of multiple computers sharing a printer on a network, and several options are available for connecting the printer. Mar 27, 2017 · Now you can connect to OctoPrint anywhere and get your 3D printer to work — even there is no Wi-Fi whatsoever. I reinstalled the micro SD, and successful can get Octoprint to connect with and control my printer. Others have used it successfully in the past. Side note: I use a mac and I entered in my network information in the network text file. By Sharky, Computerworld | True tales of IT life: useless users, hapless bosses, clueless vendors and adventures in the IT trenches. Aug 22, 2019 · USB cable to connect the Pi to the printer; A 3D printer lol; A computer with some sort of SSH program or a screen and keyboard/mouse to work directly off the Pi (might work I am not sure, I used a terminal on my mac and SSH’d into the Pi). There aren’t any good troubleshooting guides for this kind of issue. I have the Pi 3, with built in internet, and I have written the image to the msd card and loaded it in, but the IP address does not show up when I scan the network. Under Settings > RPi Port MUST be set to off. It prints from SD card. Step 1, Connect the Raspberry Pi with any of the USB ports on it to the printer USB port. Aug 24, 2019 · OctoPrint is one of the best tool you can get for your 3D printer. Jun 13, 2021 · After checking the Configuration and restarting Home Assistant we have a switch to connect and disconnect the Printer from OctoPrint. Once you click it you should already see your Octoprint device in the menu. After I get this problem I made today a update per GitPull so my Octoprint version is "1. Octodash will be sleeping if the printer is not connected to Octoprint; Touch the screen to send the connection request, if the printer is off this will eventually just Octoscreen, like Octodash, is a touchscreen user interface you can add to your 3D printer being controlled from Octoprint. It’ll reboot and reload with all components ready to get started. Oct 19, 2021 · refreshed octoprint (a billion times) right now I cannot select "/tmp/printer’ from either the drop down in the settings menu or the dropdown in the main octoprint page. 0 ». My solution of the problem is based on udev and systemd . log file (here is how). * If you are using a Sailfish printer with your OctoPi, you are likely going to need OctoPrint’s GPX Plugin. log file (it's at the same place where you got your octoprint. It's connected to an OctoPi and I've been able to get just one file to print on it (which I had to cancel due to leveling issues). There are a number of possible reasons for this: You selected "AUTO" as port but your printer doesn't support auto connect. 2562 I assemble my printer, connect the Pi, and connect Octoprint using Realizing I have no models on the Octopi yet, but wanting to use a  Learn how to set up OctoPrint using OctoPi and a Raspberry Pi. If you see it just paste the API key and you are done! If not, you need to Aug 08, 2021 · Today, I will explain how to install multiple Octoprint instances in a docker container with multi webcam support. Fixes connection issues with Malyan/Monoprice printers. 8 Octoprint versions Removed May 18, 2020 · I then started the printer and the octoprintPI, I then opened the occtopi on the web and in the Api ifound the key that i copied to the memory. During the first printer is printing, you are not able to connect to a second one without disconnecting the connection to your actually printing printer! Dec 10, 2020 · VII - Connecting OctoPrint or OctoPi to Your 3D Printer. It works; I'm able to manually move all the axes through the Octoprint UI. 2 (I am a Linux user and therefore I use the appimage), when making the updates of the plugins, the connection for the octoprint does not appear Sep 19, 2020 · On a completely different note; while testing on two Ender-3 v2's, we experienced connection issues on both. Jun 08, 2021 · octoprint-cli connection connect - connect to printer, serial port and baudrate are decided automatically unless specified with the -b [BAUDRATE] and -p [PORT] flags. 11ac Let’s Party. 9 เม. An ideal printer for your small business also needs to keep its footprints and cost Laserjet printers make it easy to get all of your work accomplished in the office or at home. Your 3D Printer purchased in the last decade will work on the Polar Cloud unless it has a proprietary slicing software or USB connection protocol. Save and close. Step 1: Load the OctoPi image onto the microSD card. Dec 10, 2020 · OctoPrint wasn’t initially developed with multiple printers in mind. The Ultimaker S5 is a bad match for your Flashforge Creator Pro. 16) Reconnect the Pi to the 3D Printer. But for ease of installing OctoPrint for the first time, let’s keep to a simple USB cable. When we are done you will be able to send prints straight from PrusaSlicer With all the recent advances in technology, there are many different types of computers and printers on the market. There is an additional setting in the Prusa i3 settings that you must adjust. Once you have indulged yourself in all the great benefits brought forward by May 10, 2021 · New release: 1. octoprint-cli connection disconnect - disconnect from printer. Auto Disconnect can be left on as well. We have a delta (SeeMeCNC brand) that we added a Pi running OctoPrint (similar to the Robo in your case) and we have the Pi connected via USB to their version of the Arduino/RAMPS (really a Rambo board, but same idea). Now, after restarting, open the Manage printers dialog, click on your printer's name then you will see Connect PrusaSlicer to OctoPrint . I also got my camera to work and I can see the bed under Control tab. So to automate this, I have made a shell script with the code. Today I walk though through how to setup and connect Octoprint in PrusaSlicer 2. it's not my personal printer). ) Realizing I have no models on the Octopi yet, but wanting to use a test model, I grab the included SD card from Creality and plug it into the printer. 2562 Connect OctoPrint to Cura. 0 after its stable release, one in the GCode viewer and one in the handling of SD file list requests during and ongoing print: #4115 - GCode viewer: Fix dragging when a printer profile with center origin is Instructs OctoPrint to connect or, if already connected, reconnect to the printer. 149 port 80. Lastly you need a method of connecting your Raspberry Pi to your 3D printer. Some Malyan/Monoprice printers have a known issue connecting with OctoPrint, but there’s a plugin with a fix with more info as well. Apr 25, 2019 · I have octoprint set up for access outside of my home network. Follow this guide to see how quick and easy it can be to get up and running with your Octopi powered 3d printing! What you need to run Octoprint. )A micro USB power supply fo… Note that if you enter the printer's menu or insert an SD card, the IP address can disappear from the screen and you have to reboot the printer to see it again. Nov 19, 2020 · connecting cura to Octoprint. ย. Only the second connection succeeds. Under “General” modify the “Print Host upload” with the following settings: OctoPrint is a web interface for your 3D printer. 1. Jan 07, 2020 · You can not only scroll through the layers of the object, but, using the slider at the bottom, you can see the exact pattern the 3D printer will use to ‘draw’ each layer. If not, reset the printer ID using the following steps: Go to your OctoPrint portal. log from). The UM3 has plenty of remote printing options (Ultimaker Connect, Ultimaker Cloud, it even has a completely open API for local networking interaction). Click “Save” to save the settings. adds all kinds of new feature possibilities to your 3D Printing setup. But now my Printer won´t connect to octoprint or pronterface. If not set the current portPreference will be used, or if no preference is available auto detection will be attempted. This can commonly happen if you restore an OctoPrint backup on two or more instances. On successful connect, you will see this: Recv: ok. Although you can install  It will be used for informative display only, so it can be the 3D printer name This field is not mandatory if you only want to provide the public IP (or  3 ก. I've tried many times and it still hasn't been able to connect to the network * If you are using a Sailfish printer with your OctoPi, you are likely going to need OctoPrint’s GPX Plugin. This is my configuration in configuration. octoprint not connecting to printer 0