ISP Programming?

[jordam]

Existing documentation shows flashing the firmware through the jtag interface, this is a more complex to reach then the ISP interface. Could one flash the firmware via the isp interface?

[thetazzbot]

Yes, the ISP header is the default method, exposed via the connector on the front of the machine. It is documented somewhere :) On my website I believe

this article discusses both methods

http://www.thetazzbot.com/2015/02/16/connecting-the-avr-dragon-to-the-craft-cutter/

[jordam]

I suppose it does. The 'Next, the hard way' part made the think that the hard way was needed to flash the fimware.

Thanks!

[jordam]

I just wanted to say thanks for making this software.

I was able to get it up and running over the course of a work night with 0 amtel experience. Seriously a breeze considering its reprogramming embedded controllers.

A key layout picture would be nice, but I was able to figure out load, unload, and pressure so far, and those are the basics.

[TrendMend]

hello again, good to see your back, but my isp programmer does not like this, it will just restart the machine and avrdude error out. Any ideas what could be wrong?

[thetazzbot]

I'm not familiar with avr dude, but my steps for the Atmel studio are: Configure the Tool Connect Read device I'd Go to memories, program device

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On Thu, Apr 4, 2019, 11:21 AM TrendMend ***@***.***> wrote: hello again, good to see your back, but my isp programmer does not like this, it will just restart the machine and avrdude error out. Any ideas what could be wrong? — You are receiving this because you commented. Reply to this email directly, view it on GitHub <#4 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AAJN6Jy26LoFDJKRZ0IPWKKCBBoQsng7ks5vdiaHgaJpZM4FmwR2> .

[TrendMend]

Thanks, what programmer do you use? (if it;s not the one you used in your blog, of course)

[thetazzbot]

I'm using an AVR Dragon, in ISP mode, but any ISP programmer will suffice

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On Fri, Apr 5, 2019 at 4:16 PM TrendMend ***@***.***> wrote: Thanks, what programmer do you use? — You are receiving this because you commented. Reply to this email directly, view it on GitHub <#4 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AAJN6PlVyw9Ves9v_GKUQMnAF-acQytgks5vd70kgaJpZM4FmwR2> .

[TrendMend]

Thanks, I have a cheapy pocket avr programmer by sparkfun, because I only needed it for my 3d printer lol. I will definitively check out some better ones on digikey though. it is pretty hard getting this stuff in Canada with how few retailers we have.

[thetazzbot]

That cheapo should work fine. Did you try it with Atmel studio?

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On Sat, Apr 6, 2019, 11:27 AM TrendMend ***@***.***> wrote: Thanks, I have a cheapy pocket avr programmer by sparkfun, because I only needed it for my 3d printer lol. I will definitively check out some better ones on digikey though. it is pretty hard getting this stuff in Canada with how few retailers we have. — You are receiving this because you commented. Reply to this email directly, view it on GitHub <#4 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AAJN6FyK4Y0u5c9sfYxkuQByuYAD3j8jks5veMrhgaJpZM4FmwR2> .

Just wanted to say, I was going through this same issue, but it is because the pinout of the usbtiny isp doesnt match the cricut. I used some jumpers to connect it per the diagram at your blog and it appears to have solved my avrdude issues.

[TrendMend]

Hold on, What!? Okay could you please send me a link to the diagram? I have a usbtiny isp sparkfun clone but it didn't work when I did it the freeexpression way.

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On Sun, May 19, 2019 at 12:16 PM Justin Hunt ***@***.***> wrote: Just wanted to say, I was going through this same issue, but it is because the pinout of the usbtiny isp doesnt match the cricut. I used some jumpers to connect it per the diagram at your blog and it appears to have solved my avrdude issues. — You are receiving this because you commented. Reply to this email directly, view it on GitHub <#4?email_source=notifications&email_token=AFSAGDTDHZVVUJZ3JPEBZCLPWGKPTA5CNFSM4BM3AR3KYY3PNVWWK3TUL52HS4DFVREXG43VMVBW63LNMVXHJKTDN5WW2ZLOORPWSZGODVXHSTA#issuecomment-493779276>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AFSAGDRE43KKNGTLZZA4QKTPWGKPTANCNFSM4BM3AR3A> .

-- -Rulon Rock Fx: (403) 252-8010 Em: rulonrock@gmail.com

[TrendMend]

Sorry @KoiosLabs , I just gave up on this because of not being able to program it, could you please provide me the steps you did to reprogram it? I actually needed this cricut this week but since I couldn't make it cut custom without reprogramming (which avrdude gave an error on) I just used an exacto and a day of work haha.

I'll post up a photo of the wiring once I validate it works... it seemed to flash ok, but I'm not 100% sure what I'm expecting now that the machine is on, I just see pressure:3, on the screen.

[TrendMend]

ah, gotcha. Thanks, also I didn't remember freecut having pressure but I guess I was wrong haha

Edit: Yep I was wrong

Dials

Dial Speed: Also adjusts the cutting speed and is used to read the cutting speed after power up. Only the mid range of the speed choices can be selected, use the +/keys to get all the way to the end.

Dial Pressure: Also adjusts the cutting pressure and is used to read the initial pressure on power-up. Only the mid range of the pressure choices can be selected, use the +/keys for the full range.

Dial Size: Not used. The machine can cut up to 80"x12"wide.

Using this image,

and this pinout of the usbtiny isp header:

I cobbled together some jumper wires to make the pins lineup properly:

Apologies for the lousy photos, I didn't take the whole cricut apart because I'm lazy, so the space was quite limited.

If anything is unclear let me know and I can help you through it. Does seem to work through inkscape, but I need to get one of the cutting mats for it before I can 100% prove its cutting properly.