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License: Other
Free cutting firmware replacement for cricut hardware
License: Other
Freecut v0.1 Free firmware replacement for Cricut(tm) Personal paper cutter. ******************************************************************************* IMPORTANT: REPROGRAMMING THE AVR WILL PERMANENTLY ERASE YOUR ORIGINAL FIRMWARE !!! THERE IS NO WAY TO GET THE ORIGINAL FIRMWARE BACK !!! ******************************************************************************* Original firmware cannot be copied from another machine (it has been locked and cannot be read from the CPU) Original firmware cannot be restored through any PC application used for normal firmware upgrades. This Freecut firmware has only been tested on the machine that I have. It may not work on your machine. It may cause permanent damage, and it will certainly void your warranty. Freecut cannot read your original cartridges and may never read them in the future. Cricut is a trademark of PROVO CRAFT. Freecut is not a PROVO CRAFT product. Freecut was developed completely independently, without any documentation to PROVO CRAFT products, and without any original firmware. If you have problems with Freecut, do not consult PROVO CRAFT. If you still want to proceed: Attach an AVR programming cable to cartridge connector on the main board (J5): J5 | AVR ------+----- 1 | PDO 3 | SCK 4 | PDI 5 | RESET 6 | GND Top view of connector: J5 +---- ---+ | 9 7 5 3 1 | |10 8 6 4 2 | +---------------+ ===edge of board====== And upload the freecut.hex file. After reprogramming, the machine should beep, and display "Freecut v0.1" on the LCD display. Use keypad to load/unload paper (bottom right is unload, one to the left is load) Use the USB cable to communicate (keypad is mostly non-functional, as well as the 3 dials on the front). USB uses 115200 baud, 8N1. Following commands are available: version display version number move <x> <y> lift pen, and move to coordinates. draw <x> <y> drop pen, and move to coordinates. curve <x0> <y0> <x1> <y1> <x2> <y2> <x3> <y3> drop pen and draw cubic Bezier curve speed <num> lower numbers are faster. 60 is about the fastest practical speed. 100 is reasonable for most cases. The speed is tied directly to an AVR timer: speed 100 -> 250 kHz/100 = 2.5 kHz stepping frequency -> 6.25"/second. If the speed is too high, the motors will start skipping. press <num> lower numbers are more pressure. 1023 is minimum, 0 is maximum. flash just dumps the internal AT45DB041 flash chip in CAR mode. reset CPU reset Don't send too many commands too quickly. Wait for '>' prompt before sending another line. NOTE: This is the first quick & dirty version. User interface may experience sudden changes (like a more sensible speed/press syntax) e-mail: <[email protected]>
I and others have done some work reverse engineering several versions of the Cricut Hardware.
http://oscopetutorial.com/cricut/index.php?title=Main_Page
Some of it relates to the use of the built-in firmware, some might be helpful for developing custom firmware. Editing is currently limited, because the last version of this site was completely killed by SPAM. www.built-to-spec.com/cricutwiki/index.php?title=Main_Page
If you create a profile the same as your github and your profile is associated with Freecut, I would be happy to enable edit abilities.
any plans on checking out the serial/USB on a mini?
I'd like to use this to cut shapes based on vector files from indesign. I'm a ruby programmer by day, but sending and receiving signals over USB I just have no idea how to do. If you could point me in the right direction, that'd be awesome. Thanks for working on this this far.
l ported the freecut firmware to newer cake machine. It has a different PIC than the one free cut was originally written for, but the io and the rest of the electronic where pretty much the same, except for the LCD display. I'm planning on adding code for a graphtec interface,so it can be used to cut from PDF. gary
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