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knittingmachine [2010/10/18 17:57]
ladyada created
knittingmachine [2016/01/28 18:05] (current)
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-again!+====== Brother KH-930e knitting machine ====== 
 +Adventures in communicating with the Brother KH-930e knitting machine! 
 +===== Make your own cable ===== 
 +The kh930e is designed to work with a Tandy PDD1 floppy drive. We don't need it! Make your own cable to communicate between your computer and the machine. You will need: 
 +  * [[http://​​index.php?​main_page=product_info&​cPath=18&​products_id=70&​zenid=08edecd591934eebcc4993c01b0259d6|FTDI cable]] 
 +  * 2x4 connector part number [[http://​​scripts/​DkSearch/​dksus.dll?​vendor=0&​keywords=WM8036-ND|WM8036-ND on Digikey]] 
 +==== Change '​polarity'​ of the FTDI cable ==== 
 +FTDI cables have standard '​inverted'​ TTL (zero is 3-5V and one is 0v) but the KH930E requires the opposite. Luckily its very easy to fix this by reprogramming the software. 
 +You will need a copy of [[http://​​Resources/​Utilities.htm|FTDI MProg ]] (windows only) and your FTDI cable. Plug in the FTDI cable into your windows computer and [[http://​​Drivers/​VCP.htm|install the driver that matches your computer best]] 
 +{{  http://​​images/​arduino/​foundft232ruart.jpg?​nolink&​256x129 ​ |}} 
 +[[http://​​learn/​breakoutplus/​ftdifriend.html#​installing_ftdi_drivers|Please read our detailed tutorial on installing the driver here]] then come back when the driver is installed 
 +Now download [[http://​​Resources/​Utilities.htm|FTDI MProg]] and run the program 
 +==== Rewire the connector ==== 
 +  * Re-situate the pins from the FTDI header connector into the 2x4 connector. [[http://​​chumbyhackerboard/​serial|This chumby tutorial]] shows how to disconnect them from the original header. 
 +===== Python code ===== 
 +  * Available on [[http://​​adafruit/​knitting_machine|github]] 
 +  * Based on [[http://​​wiki/​index.php?​title=Electroknit_Technical_Information|Steve Conklin'​s knitting machine code]] 
 +  * Includes scripts for emulating the floppy drive, previewing patterns, and converting images to new patterns. 
 +===== Backing up patterns/​dumping memory from kh930e to computer ===== 
 +  * Start up the disk drive emulator in the command line. 
 +  * When "​ready"​ lamp is lit, clear display with CE key, then prepare to save pattern data to "​disk"​ by typing 552, then STEP. 
 +  * Display will go blank and then "​ready"​ and "​pattern no" lamps will light up with the "​track"​ number 1 in the display. Press STEP. 
 +  * Machine will beep when finished, and the track data will now be in the "​img"​ folder along with your emulator and other scripts. 
 +  * The emulator also makes a handy file-01.dat file to make it easy to preview the patterns using 
 +===== Creating new patterns ===== 
 +===== Putting new patterns on the machine ===== 
 +  * Start up the disk drive emulator in the command line. 
 +  * When "​ready"​ lamp is lit, perform a memory reset by pressing CE key, then type in 888, then press STEP key. 
 +  * Clear display with CE key, then prepare to load new data into memory by typing 551, then STEP. 
 +  * Display should go blank, then "​ready"​ and "​pattern no" lamps should illuminate. Press 1 to indicate which "​track"​ to load from the disk drive emulator, then press STEP. 
 +  * Machine will beep when finished. pick a pattern and knit as normal. 
 +===== Troubleshooting ===== 
 +  * If the RAM data has been corrupted, the screen will flash "​888"​ and the machine will seem unresponsive. Hold down INPUT and STEP at the same time, and when the display should change. Perform a memory reset by hitting CE, 888, STEP. 
 +===== Outside resources ===== 
 +  * [[http://​​guide/​Knitting%20Machine/​Brother/​Brother-KH-930-Knitting-Machine-Owner%27s-Manual-T0RJNU9UUT.html|KH-930e manual]] - fill out a CAPTCHA to download the PDF manual 
 +  * [[http://​​labs/​python_pitfalls.html|Python pitfalls]] - helped spot a bug  
 +  * [[http://​​brothl1.htm#​Troubleshooting%20Uploading%20and%20Downloading%20with%20Brother%20KH940,​%20KH950i,​%20KH965i,​%20KH970|Troubleshooting Brother machines]] - includes how to do an 888 reset of memory 
 +  * [[http://​​answers.php?​id=124420|Good forum post]]- includes what to do when all the machine will do is flash "​888"​ 
 +  * [[http://​​brother_knitking.htm|Newton'​s Yarns]] - in Anaheim, CA, claims to carry Brother machines/​accessories incl. KE-100 motor drive 
/home/ladyada/public_html/wiki/data/attic/knittingmachine.1287424667.txt.gz · Last modified: 2016/01/28 18:05 (external edit)