Octoprint change wifi

Out of the box, OctoPrint / OctoPi works with ethernet, but to run it over wi-fi, you need to make a few simple changes. So let's get started: Step 1 Connect your OctoPi Micro SD card to your computer. Step 2 Find the octopi-wpa-supplicant.txt file, and open it in Notepad++. DO NOT OPEN THIS IN NOTEPADIs there any other way of using Octoprint with the CR-10 Smart? A: CR-10 Smart has a USB port, which can be connected to Creality WIFI BOX for control operation and printing. Q: What is the best temperature for PLA? What materials can the CR 10Smart print? A: The recommended temperature of the PLA nozzle is 200 degrees, the hotbed is 60 degrees.Change the baud rate on the printer and Octoprint until you can find the max baud rate that your printer and Octoprint can agree on without any errors. You will see actual errors in the Terminal screen you see the send/recv OK log shown in your original post. ... OK when using Octoprint you typically connect to it either by Wifi or Ethernet and ...Run nmtui command as root to change the IP address configuration for your WIFI link from dynamic to static IP. If you don't know what address to put here, I'd say that many router don't reserve all address pool for dynamic address, so they are likely using address from 1 to 100 (for the last number) for dynamic address DHCP, so it should be ...An optional Wi-fi usb adapter to connect your Raspberry wirellessly to your Network. If you are using Wi-fi you need to do either . Connect your RaspBerry to an external monitor and connect a mouse and Keyboard to set up Wi-fi. Setup a tightVNC server as described in this instructables (Optional) A compatible webcamera or RaspBerry Pi Camera.At the command prompt, enter the following command: sudo reboot. When the device finishes rebooting, it should automatically connect to the Wi-Fi node. If for some reason it fails to appear on the network, you can always plug the Ethernet cable back in to double check the two files and the variables you altered.Following the upgrades covered in Glass bed and heater rewire mods to Monoprice Select Mini v2 3D printer, it is finally time to install OctoPrint. This post details my setup. Initial setup Atom N270. Lots of people run OctoPrint on a Raspberry Pi 3+, but I happened to have another embedded system lying around unused I wanted to put to good use. Step 1: Install the latest version of the Raspberry Pi Imager for your operating system here. Step 2: Open the Raspberry Pi Imager. You should be greeted with the same screen as always. Step 3: Press Ctrl + Shift + x to open the advanced menu ( CMD + Shift + x for Mac OSX).3 Just starting with octoprint. Bought a pi3A+, Etched a 4Go micro sd card with the latest octopi distro (0.17.0) Using a 5V bench power supply that delivers up to 10A. Following official octopi instructions I managed to connect once my pi to the wifi, configured it, but as soon as I reboot my pi, it won't connect to the wifi again. Any hints?Octoprint - Configuration and install 3rd party accessories & Other projects > Octoprint. Top Prusa Forum Posts. X and Y too short updated 3 hours ago: Ladrogue. 1 65. Layer shifts at precise moment (ASA) - See pictures updated 10 hours ago: fuchsr. 3 277. Gaps in Top Layer updated a day ago: herbert.OctoPrint is a piece of software for the Raspberry Pi (or other platforms) that allows you to wirelessly control and monitor a 3D printer. It's host software that turns the Raspberry Pi into a server, adding a web interface. For a full list of features and functionalty, please check out the OctoPrint website.Octoprint web UI no longer accessible after a network fault. e.g. the wifi router the raspberry pi connects to is rebooted. Occasionally after long periods of printer idle time connection is also unsuccessful. Hard rebooting the pi solves this. Inconvenient during long prints. Octoprint version 1.2.6. latest Chrome and windows 10 browserOctoPi - Easiest Option to Explore OctoPrint! The easiest way to setup your RasPi for OctoPrint is to download the pre-loaded SD Card image from the GitHub repo maintained by Guy Sheffer, with source located here. (Latest image can be found here.). This first step -- getting the image on the SD card -- can be a tricky challenge for those not comfortable on the command line or Linux systems.Add F152S model configuration. 1. Go to the OctoPrint settings screen and click Add Profile in the PRINTER→Printer Profiles menu. 2. Enter in the General window, Name: F152S, Model: WEEDO F152S. 3. In the Print bed & build volume window, change the lengths of the X, Y, and Z axes to 200mm, 185mm, and 195mm respectively, and check the Heated bed.Disconnect USB cable from the printer if you want to use the WiFi function. WiFi works with 2.4 GHz b/g/n networks only. These next two notes apply to when connecting using the Android & iOS apps. If you have a 2.4 GHz and 5 GHz network using the same SSID (wireless network name) you may have trouble connecting the printer.I think Octo4a is a really good solution, to the point where honestly, if you're just looking to get OctoPrint running, I would rather buy a cheap Android phone now than mess around with the Pi, printing a case for that, trying different USB cable because some aren't reliable and so on. Octo4a works well, it's pretty easy to set up, in ...If your touchscreen mounts directly to the Raspberry Pi's GPIO header (as mine does), you'll need to connect and configure it. If your OctoPrint setup uses a camera, attach the camera's ribbon cable to the Pi before connecting it to the screen.. Then, carefully push the screen onto the Raspberry Pi's GPIO header.From: $ 197.99. Wired or Wireless Connection, 32GB Storage, Power Adapter, Silent Case, Remote Control Support*, HD Camera Support (add below), and Tech Support Included. Raspberry Pi 4 Board Included and Pre-Installed. If this version is out of stock you can check the others: EZPi Pro V2 - 2GB OR EZPi Pro V2 - 4GB.Setting up or changing Wifi on OctoPi 0.15.0 or newer In the /boot/ directory, open octopi-wpa-supplicant.txt with the appropriate text editor. (The use of /boot/octopi-network.txt which was used in OctoPi version 0.14 has been discontinued in version 0.15). There are instructions within that file for editing your network settings.From: $ 197.99. Wired or Wireless Connection, 32GB Storage, Power Adapter, Silent Case, Remote Control Support*, HD Camera Support (add below), and Tech Support Included. Raspberry Pi 4 Board Included and Pre-Installed. If this version is out of stock you can check the others: EZPi Pro V2 - 2GB OR EZPi Pro V2 - 4GB.What we do differently; remote control (& much more) SimplyPrint is in the cloud. One of the main differences is, that OctoPrint, by default, can only be accessed when you're home on the same network as your printer. SimplyPrint makes sure you can always access your printer, its camera (if it has one), start, stop and pause prints - no matter ...Add TINA2 model configuration. 1. Go to the OctoPrint settings screen and click Add Profile in the PRINTER→Printer Profiles menu. 2. Enter in the General window,Name:TINA2,Model:WEEDO TINA2。. 3. In the Print bed & build volume window, change the lengths of the X, Y, and Z axes to 100mm and deselect the Heated bed. 4.Octoprint web UI no longer accessible after a network fault. e.g. the wifi router the raspberry pi connects to is rebooted. Occasionally after long periods of printer idle time connection is also unsuccessful. Hard rebooting the pi solves this. Inconvenient during long prints. Octoprint version 1.2.6. latest Chrome and windows 10 browserOnce you see Pi in network sharing, right-click on it and then select properties to see your OctoPrint IP address. Step 2: Another way to find Octopi's IP address is by using your wifi router. Find your router IP address, username, and password by accessing your router setting. When you find it, put into onto your web browser and search.OctoFarm is a single pane of glass that combines multiple OctoPrint instances into a single interface. It utilises the OctoPrint API and websocket systems to allow you to monitor and manage all of your 3d printer farm. OctoFarm brings together a large feature set from OctoPrint and also many of it's own rolled on top that help makers running an ... In order to connect to the network, a device needs the password. The configuration tool you used likely just stored an encoded (which means roughly the opposite of encrypted, despite many people not understanding the difference) form of the password. To store it encrypted would require also storing a decryption key to decrypt and use it, but ...Nothing changed with the wifi, the Raspberry just wont connect anymore. A LAN cable into the PC is the only way i can acces the Octoprint interface to maker sure it was installed correctly. And print strait from my PC. But the wifi let me download plugins etc. Now i can't do that anymore and there is a huge cable in the way.There was allot of misinformation on how to set a static IP address on a octopi. I'm running a raspberry Pi 3 B+. The config file is completely different loc...CREALITY WIFI TAKES ON OCTOPRINT. A very common hack to a 3D printer is to connect a Raspberry Pi to your printer and then load Octoprint or a similar program and send your files to the printer via the network. [Teaching Tech] noticed that Creality now has an inexpensive WiFi interface that promises to replace Octoprint and decided to give it a ...Jul 01, 2018 · Mac: In OS X computers, we have to click the Apple Menu > System Preferences > and then click the Network icon. Select the Ethernet or Wi-Fi connection and go to “Advanced.”. Click the TCP/IP tab and you will see the IP address next to “Router.”. Linux: In GNU/Linux distros, we can get the information the same way we do in Windows and Mac. I had some issue with my modem/router lately and it needed a restart. I was printing using OctoPi (1.2.6) and I'm using a Wi-Fi dongle to communicate with it. When the network was up again OctoPi did not reconnect (the print was OK though). The only way to get it to reconnect, without power cycling the Pi, was to unplug and replug the Wi-Fi dongle.Teams. Q&A for work. Connect and share knowledge within a single location that is structured and easy to search. Learn moreIn Octoprint, if I tell it to shutdown the system, it'll send a command to the S20 to turn power off in 2 minutes, which gives plenty of time for the Octoprint-device to turn itself off cleanly.Which WiFi USB dongles are supported? How expensive is the hardware to set up a full 3D Printer Farm/Fleet? Can I buy SD cards pre-flashed with AstroBox software (for RPis)? Does this software offer the same functionality as the pre-built AstroBox options? I already have a Raspberry Pi with OctoPrint (OctoPi).Which WiFi USB dongles are supported? How expensive is the hardware to set up a full 3D Printer Farm/Fleet? Can I buy SD cards pre-flashed with AstroBox software (for RPis)? Does this software offer the same functionality as the pre-built AstroBox options? I already have a Raspberry Pi with OctoPrint (OctoPi).7 - Create multiple instances of octoprint with Docker-Compose. From PORTAINER click on STACKS (1) and ADD STACK (2) It will open a docker-compose interface. The first value we have to enter is the name of the stack, it can be casual but I always suggest using a name that has some kind of meaning to better remember what the stack is for.It wouldn't be hard to adapt to a Duet, I've recently made some LEDs change colour based on print status using an ESP and the reprap API. Report comment Replylevel 1 · 5 days ago You should be able to pop the sd card out and put it in you computer. Then edit /boot/octopi-wpa-supplicant.txt with the new info. Make sure to use an appropriate text editor that won't add a bunch of Windows garbage to the file, I recommend notepad, notepad++ or VSCode. 4 level 2 Op · 5 days ago OK, so i did that.I followed the instructions, except that I did not setup the wireless network file that they say in the instructions at Octoprint. I am using a network cable instead so I did not use the wireless capability in the Raspberry Pi 4. Setting up Octoprint. The first thing I did was login into the Raspberry Pi using ssh to change the default password.Here are the steps: Go to Settings > Access Control. Click the Create new user button. Choose the admin privilege level. Input the username you want to use and a password of your choice. From now on, use this new user to login into OctoPi, which will effectively mean that you have changed your username.Once you see Pi in network sharing, right-click on it and then select properties to see your OctoPrint IP address. Step 2: Another way to find Octopi's IP address is by using your wifi router. Find your router IP address, username, and password by accessing your router setting. When you find it, put into onto your web browser and search.Connecting the device to your wifi network This needs a little bit of different steps. We will link the device to the wireless network and let it ask for an IP address. Go to the wireless page and edit the existing KlipperWRT network Set it up as an wireless client to your network3D Printer Monitor for OctoPrint. Monitor your 3D printer over WiFi with a Wemos D1 Mini and OLED display. Intermediate Full instructions provided 2 hours 6,359. Story . Printer Monitor (OctoPrint 3D Printer Monitor) ... If you want to change settings again in the settings.h, you will need to erase the file system on the Wemos or use the ...Configure your WiFi connection by editing octopi-network.txt on the root of the flashed card when using it like a thumb drive. Boot the Pi from the card. Log into your Pi via SSH (it is located at octopi.local if your computer supports bonjour or the IP address assigned by your router), default username is "pi", default password is ...And finally, it can be activated: source venv/bin/activate. Next, we need to install octoprint into virtual environment: pip install pip --upgrade pip install octoprint. Also, octopi (the user) needs to have access to the serial ports: sudo usermod -a -G tty octopi sudo usermod -a -G dialout octopi.First, the application. The Octo4a project lets you use an old Android phone as a 3D printer server, web interface, and even time-lapse camera to make those nice movies where the print seems to ...OctoPrint allows wireless/LAN based control over the 3Dprinter. Cura is an STL-file processing/slicing software. ... Unfortunately, I had to add a new custom Printer with Ultimaker 2+ details to change machine settings to Marlin/RepRap g-code, because the standard printer profile for UM2+ doesn´t seem to allow changes of g-code flavor anymore ...I had some issue with my modem/router lately and it needed a restart. I was printing using OctoPi (1.2.6) and I'm using a Wi-Fi dongle to communicate with it. When the network was up again OctoPi did not reconnect (the print was OK though). The only way to get it to reconnect, without power cycling the Pi, was to unplug and replug the Wi-Fi dongle.Configure your WiFi connection by editing octopi-wpa-supplicant.txt on the root of the sd-card ... bonjour or the IP address assigned by your router), default username is "pi", default password is "raspberry". Change the password using the passwd command. ... with a self-signed certificate. Configure octoprint (username, password etc ...OctoPrint is only available on the unstable edge channel. It could break and change often. Overview All releases Channel Version Published; The snappy web interface for your 3D printer. Control and monitor every aspect of your 3D printer and your printing jobs right from within your browser. OctoPrint is compatible with most of the available ...The Ender 3 and OctoPrint are a match made in heaven. Learn how to set up OctoPrint for the Ender 3 (V2/Pro) in 4 simple steps! Printables Basics Buyer's Guides Reviews Deals. More . Printables; Basics; Buyer's Guides; Reviews; Deals; Pro . Get It 3D Printed This article is free for you and free from outside influence. ...Not flashing the software to Wyze bulb :p. For a while, I've been using the Octoprint Tasmota plugin for controlling it's power state, but I noticed that there is very little supp Plug and Play WiFi Printing & Remote Control Solution: Creality Smart Kit includes a WiFi box and a camera, providing you a simple & budget remote printing and monitoring solution for your Creality 3D Printer. Compared with other open source solutions, it is easier to set up and it costs less.(Note: Supports 2.4GHz WiFi Only) Nothing changed with the wifi, the Raspberry just wont connect anymore. A LAN cable into the PC is the only way i can acces the Octoprint interface to maker sure it was installed correctly. And print strait from my PC. But the wifi let me download plugins etc. Now i can't do that anymore and there is a huge cable in the way.Octoprint is a popular open-source 3D printer controller software that runs on Raspberry Pi boards, Orange Pi Lite SBC, Amlogic TV boxes, and other devices.But considering many people may already an older, perfectly working smartphones at home, FeelFree (Filip) decided to create the Octo4a project that install an Octoprint server on Android smartphones.In the "SSID" line, type the Wi-Fi network's name. In the "PSK" line, type the password; In the case of using OctoPrint for multiple networks and 3D printers, you could simply copy-paste the network blocks and fill in the varying details of each network. Enter your country code in the code present near the bottom of the screen.Turn off your Raspberry Pi, then plug it into your 3D printer. After it has booted up, open OctoPrint again in your browser and take your newly WiFi-enabled printer for a spin by clicking the Connect button. After it has connected, you'll be able to set the hot end and bed temperature, then watch as the real-time readings are updated.An optional Wi-fi usb adapter to connect your Raspberry wirellessly to your Network. If you are using Wi-fi you need to do either . Connect your RaspBerry to an external monitor and connect a mouse and Keyboard to set up Wi-fi. Setup a tightVNC server as described in this instructables (Optional) A compatible webcamera or RaspBerry Pi Camera.Page 14 Troubleshooting Cannot connect to your Wi-Fi network. Make sure you entered the correct Wi-Fi password during the Wi-Fi setup. Check whether there are any Internet connection problems. If the Wi-Fi signal is too weak, reset your Wi-Fi router and try again. Reset the device Camera can be reset by holding down the reset button for 3-4 ... Thermistor Type Change. Heater Block: What Goes Where. Optimal Layer Heights. ... Thermistor Replacement - Heatbed. OctoPrint. OctoPrint Connection Fix Plugin. Slicer Stuff. What is a Slicer. Cura. Cura 2.3 USB Printing Not Working (experimental) Cura 15.04.6 - Enable Pronterface UI. Simplify3D. ... wifi/webui.txt · Last modified: 2017/05/30 ...December 13, 2020. A very common hack to a 3D printer is to connect a Raspberry Pi to your printer and then load Octoprint or a similar program and send your files to the printer via the network ...Connecting OctoPrint and Cura could not be simpler. Navigate to the API section of the Setting Menu in OctoPrint and copy your API Key. Install the OctoPrint Add-On for Cura (available in the Marketplace) Paste your OctoPrint API Key. Go into your Printer Settings in Cura and select Connect to OctoPrint.R to refresh the list. Use the cursors on the keyboard to navigate up and down the list. Press right to configure the wireless connection. Press down a few times and check "Automatically connect to this network". Press down a few times again and type in your password in the key field. Press F10 to save.Sep 29, 2021 · DX Original Mini Nano USB 2.0 IEEE802.11n/b/g 150Mbps Wi-Fi / WLAN Wireless Network Adapter, SKU 256382. Has Ralink RT2870 chipset. Works out of the box in latest Raspbian Wheezy (7.2). I ( -df- ( talk )) have been using it in powered USB hub with Raspberry Pi model B and also directly in model A's single USB slot. I use Octoprint with my Qidi X-Max. I have added a DS18B20 sensor for reading the temperature for inside the enclosure. This script produces a temperature value, for use with the Navbar Temperature plugin. Place in /usr/local/bin. Change the serial number to match your sensor.Next place to look at is systemd. Running. _systemctl list-units 'octoprint_connect*'_. will show you the name of the automatically created service. If there is one, you can see its output by running. journalctl -u [email protected] (replace XXXXXX properly from the systemctl output from above.An optional Wi-fi usb adapter to connect your Raspberry wirellessly to your Network. If you are using Wi-fi you need to do either . Connect your RaspBerry to an external monitor and connect a mouse and Keyboard to set up Wi-fi. Setup a tightVNC server as described in this instructables (Optional) A compatible webcamera or RaspBerry Pi Camera.Is there any other way of using Octoprint with the CR-10 Smart? A: CR-10 Smart has a USB port, which can be connected to Creality WIFI BOX for control operation and printing. Q: What is the best temperature for PLA? What materials can the CR 10Smart print? A: The recommended temperature of the PLA nozzle is 200 degrees, the hotbed is 60 degrees.Change the system password in "Set username and password" by entering a new password to use for the system user "pi". This is not the password you'll use for logging into OctoPrint but one that you'll have to use to log into your Pi via SSH should you ever need to. Leave the username as "pi", do not change it to anything else!Step 2: Unzip OctoPrint. The OctoPrint disk image is huge and will take a while to download. It comes in a compressed zip file, and you'll need to unzip that. On a Mac, double click on the zip file. When it's done, you'll have another file that ends in .img. This is the file that you'll put on your SD card.Basic Setup - Edit Info to Log On to Your WiFi Network NOTE: there is now an easier way to edit the WiFi settings than the method described below. Instructions for using the Raspberry Pi Imager to download and install OctoPrint and edit the WiFi settings can be found at OctoPrint.org - Download & Setup OctoPrintby Lucas Carolo. Updated Jul 11, 2021. Advertisement. OctoPrint gives you more control over your 3D prints. Learn how to set up OctoPi on a Raspberry Pi with this step-by-step setup guide! Contents.Cloud 3D Printing OS Operating System: Store your 3D files in the cloud, Monitor your prints from anywhere, Slice online with any device supports Cura 3, best OctoPrint pluginDecember 28, 2020. Creality, makers of the Ender series of 3D printers, have released a product called Wi-Fi Box meant to cheaply add network control to your printer. Naturally I had to order one ...Jul 01, 2018 · Mac: In OS X computers, we have to click the Apple Menu > System Preferences > and then click the Network icon. Select the Ethernet or Wi-Fi connection and go to “Advanced.”. Click the TCP/IP tab and you will see the IP address next to “Router.”. Linux: In GNU/Linux distros, we can get the information the same way we do in Windows and Mac. If you are looking for some OctoPrint merchandise, be it apparel, stickers or all-in-one kits, ... heatsinks, RGB fan, Wifi hotspot, network configuration. Inland Pi 4B 2gb Octoprint Kit by Micro Center (US) Raspberry Pi 4B 2GB, USB-C power supply, pre-flashed 32GB SD card with print, case, webcam, card reader. OctoPrint 32gb SD card by Micro ...Setting up or changing Wifi on OctoPi 0.15.0 or newer In the /boot/ directory, open octopi-wpa-supplicant.txt with the appropriate text editor. (The use of /boot/octopi-network.txt which was used in OctoPi version 0.14 has been discontinued in version 0.15). There are instructions within that file for editing your network settings. Installing OctoPi using the Raspberry Pi Imager. 🤚 Before you begin. Read and follow these instructions precisely.Most importantly, leave the system username as "pi", do not change it to anything else or OctoPrint won't work! If you haven't already, download and install Raspberry Pi Imager on your computer Find the OctoPi image under "Choose OS", by selecting "Other Specific ...From: $ 197.99. Wired or Wireless Connection, 32GB Storage, Power Adapter, Silent Case, Remote Control Support*, HD Camera Support (add below), and Tech Support Included. Raspberry Pi 4 Board Included and Pre-Installed. If this version is out of stock you can check the others: EZPi Pro V2 - 2GB OR EZPi Pro V2 - 4GB.A minimalist setup for an OctoPrint embedded host for your printer can be very trim indeed -- just the Pi, a good power supply (or power from the printer power supply), a USB connection to the printer, and a WiFi or ethernet network connection. But a typical OctoPrint setup designed to take advantage of all the features might include:Plug and Play WiFi Printing & Remote Control Solution: Creality Smart Kit includes a WiFi box and a camera, providing you a simple & budget remote printing and monitoring solution for your Creality 3D Printer. Compared with other open source solutions, it is easier to set up and it costs less.(Note: Supports 2.4GHz WiFi Only) Feb 22, 2021 · Out of the box, OctoPrint / OctoPi works with ethernet, but to run it over wi-fi, you need to make a few simple changes. So let’s get started: Step 1 Connect your OctoPi Micro SD card to your computer. Step 2 Find the octopi-wpa-supplicant.txt file, and open it in Notepad++. DO NOT OPEN THIS IN NOTEPAD accessControl: # The user manager implementation to use for accessing user information. Currently only a filebased # user manager is implemented which stores configured accounts in a YAML file (Default: users.yaml # in the default configuration folder, see below) userManager: octoprint.access.users.FilebasedUserManager # The YAML user file to use. Remaining Octoprint detup instructions common to all devices. Log back in and run the command "nmtui" to connect to your network. This should be self explanatory. After connecting to wifi if you choose to set a static IP address quit and go back in to nmtui and edit the connection to set the IP address.You need to change it at the OS level Outside of OctoPrint. /u/Sokailu 's solution is probably the easiest, but you could also just connect a keyboard/mouse/monitor to your raspberry pi and login like a regular raspbian user and change it there. level 1 · 3 yr. agoBegin printing a ".gcode" file directly from the OctoPrint interface. Before you begin, ensure that you have already completed the following steps: Log into the OctoPrint for MakerGear interface and connect to your MakerGear printer (either via wireless or via ethernet). Install Simplify3D software. Run the Simplify3D configuration assistant.We change the following value: delete the 320 and enter the number 800 before the 480. The value should now look like this: hdmi_cvt 800 480 60 6 0 0 0. Confirm this with CTRL+O and press ENTER to save. With CTRL+X we leave the nano Editor. A reboot with sudo reboot now. First start with Octoprint in BrowserHost Type: Octoprint/Duet. Select which type of wifi device you use. Hostname, IP or URL If you don't know the IP of your device, you can use the Browse button to search your network for compatible devices. If you install the OctoPrint-ipOnConnect, you'll be able to see the IP address directly on the printer's LCD. Alternatively, if you ...It is kind of lengthy and the only thing I don't have working quite yet is webcam support. But it is coming! Pine64 Octoprint setup. 1. Download Base Debian Image. 2. cd /usr/local/sbin/. 3. sudo ./resize_rootfs.sh. 4. sudo apt-get update. 5. sudo apt-get upgrade.Start Repetier. Click on Config then Printer settings make sure you are on the connections tab. Change the IP address to the one you wrote down from your router. Make sure the port is 8080. Click on the printer tab. Click on check box for Y axis invert direction so that it is ticked. Click on the Extruder tab. 10l_1ttl