Windell Oskay

Forum Replies Created

Viewing 15 posts - 1 through 15 (of 1,286 total)
  • Author
    Posts
  • in reply to: A0 size with Axidraw V2 #28437
    Windell Oskay
    Keymaster

    You can edit the machine size definition in the axidraw_conf.py configuration file.

    in reply to: AxiDraw fell off. What should I check ? #28414
    Windell Oskay
    Keymaster

    If the carriages feel solid, that’s the important thing. Y axis movement when you move X isn’t necessarily indicative of any issue.

    You might check that all four of the rubber feet are present. If the foot itself is bent, we can sell you a replacement at a discount.

    in reply to: Autofeed paper Machine #28405
    Windell Oskay
    Keymaster

    People who have built integrations with the AxiDraw and automatic feeders tend to regard that solution as their trade secret.

    I would recommend that you try contacting companies that supply equipment to print shops, rather than just searching online. You might be able to find used versions of paper feeders that normally go for $10k+ at a fraction of that price. Not to mention people that can help you navigate terminology.

    In addition to the inkjet method, another solution that we hae seen a few times is to use a low-cost robot arm like the Dobot Magician ( https://www.robotshop.com/en/dobot-robotic-arm-magician-basic-plan.html ) with its suction cup accessory.

    in reply to: No Horizontal Segments Light – Red Alpha Clock Five #28402
    Windell Oskay
    Keymaster

    The short segments and the decimals are all driven by IC U3. If none of them are lighting, then either U3 is not running or it is not getting the signals.

    Check that the chip is oriented properly and fully seated in its socket. In the schematic ( https://bcdn.evilmadscientist.com/source/alphafive/fiveletter_RevC.pdf ) note that U3 has power and ground connections at pins 1 and 16, and receives its serial data with pins 2, 3, and 4. So, check that the soldering is good at each of those pins. Next, check pin 22 of U2, where the serial data comes from.

    in reply to: No Horizontal Segments Light – Red Alpha Clock Five #28398
    Windell Oskay
    Keymaster

    Do the decimals light?

    in reply to: Mac – Device not found #28394
    Windell Oskay
    Keymaster

    Great; I’m very glad to hear that, and thank you for following up. :)

    in reply to: Mac – Device not found #28392
    Windell Oskay
    Keymaster

    Since you tried to run a firmware update while you were having trouble connecting, the first thing that we need to do is figure out what the status of the firmware is.

    What I’d like you to try next is manually entering bootloader mode on the EBB:
    (1) Disconnect power to the AxiDraw. (Leave it disconnected until communication is re-established. The USB cable can power everything except the motors.)
    (2) Disconnect the USB cable. It may be easier to do this at your computer or at the AxiDraw — either way is fine.
    (3) Press the pause button on the left side of the machine.
    (4) While keeping that button pressed, connect the USB cable.
    (5) Release the pause button.

    If this works, then the EBB should go into a red-green rhythmic-blinking “heartbeat”. If so, that’s a good sign. While it’s still in that “heartbeat” mode, try to run the firmware updater program.

    When the updater program runs, it will try a few different things. It could run into one of several different errors and may report them to you. If it either prints “Firmware updated successfully” or a firmware version string like “EBBv13_and_above EB Firmware Version 2.6.4”, then it likely succeeded, even if there are other error messages.

    If it does not succeed — if it does not appear to be able to locate the device whatsoever — then the most likely culprits are the USB cable, the USB port, or the computer needs to be restarted. If you’ve restarted and still see a failure to detect the device, then try a different USB cable if you have one available.

    If the firmware update does succeed (or likely succeeded), your next step should then be to try again in Inkscape, and see if it can connect.

    in reply to: Mac – Device not found #28390
    Windell Oskay
    Keymaster

    Sorry– I somehow didn’t get the notification of your post and just saw this now.

    Are you still getting an error?

    in reply to: AxiDraw fell off. What should I check ? #28358
    Windell Oskay
    Keymaster

    I’m sorry to hear about the accident; that sounds awful.

    Here are some general things that you might want to check:
    * Make sure that the vertical pen slide still moves freely, and doesn’t feel overly loose.
    * Check that the XY carriages feel solid, and don’t rock like there is slop when you try to move them.
    * With power off, slowly slide the carriage in X, then Y, then -X, then -Y, in a full rectangle over the full area of travel. Doing so, make sure that it feels like a smooth rectangle without a big bump anywhere.
    * Check the USB and power connector, and make sure that they aren’t loose on the control board.

    If all of that looks good, you’re likely in great shape to keep on plotting. If you find anything suspicious, let us know, and we’ll help you get it fixed.

    If any repair parts should be needed, they are indeed available.

    in reply to: Add dedicated pen up/down button? #28356
    Windell Oskay
    Keymaster

    What are you doing when inserting a pen that requires you to lower it?

    (We have occasionally seen people insert a pen in the “pen down” position, and then manually change the pen-down setting, but that’s the opposite of the recommended procedure.)

    The EBB firmware is open source, and hosted in the EggBot repository: https://github.com/evil-mad/EggBot/tree/master/EBB_firmware

    The other I/O pins above the servo connector are not polled by default, but you can poll them through software, for example by modding an extension. We would always recommend to use the existing interface rather than modifying the firmware, especially for things like this that are easily done through software: http://evil-mad.github.io/EggBot/ebb.html

    in reply to: Add dedicated pen up/down button? #28354
    Windell Oskay
    Keymaster

    Once the pen is in the pen-up position (which you can set from your computer before starting the session), there should not be any need to manually lower or raise the pen again while setting up different pens and papers, even during a full day of use. So, I’m not sure exactly what it is that you’re doing.

    It is possible to hard code something like this into custom firmware if that’s your preferred way of coding. But, it is also something that could be done with a custom Inkscape extension, a modification to one of ours, or an independent script on the computer — without any changes to the firmware.

    in reply to: Add dedicated pen up/down button? #28352
    Windell Oskay
    Keymaster

    You could potentially modify the firmware to to this.

    But, can I ask what the purpose of this change would be? What is it that you’re doing that requires you to toggle the pen up and down repeatedly?

    in reply to: Software? #28335
    Windell Oskay
    Keymaster

    Can you provide some context for what type of writing, what type of display, and so forth? I gather this is AxiDraw related in some way.

    in reply to: Pen lift problem #28329
    Windell Oskay
    Keymaster

    My initial guess is that this could have been a “mis calibrated” servo, with the arm at the wrong angle, but since it’s one of ours, I would now suspect that it is just a bad servo. If so, please contact customer service via email for a replacement.

    One other thing to check, if you are able to, would be to try raising and lowering the pen between those same values from within Inkscape (ideally on a desktop computer). If it still fails in the same way, you can be sure that it’s a matter of hardware failure rather than of something in the software setup or parameters in the CLI.

    in reply to: Pen lift problem #28326
    Windell Oskay
    Keymaster

    Is this one of our servos that came with the arm pre-attached, or is this some other servo?

Viewing 15 posts - 1 through 15 (of 1,286 total)