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Windell Oskay
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>I tried your first method, and it works great for the spiral lines, but not so great for the straight lines. I'll work on it a bit and see if I can figure out how to do that. This technique *should* work equally well for straight lines, and I'v…
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Hi William, You've brought up a number of issues here, which I'll try to address one by one. First, as the Eggbot is fundamentally a pen plotter, it strives to accurately plot the paths in a drawing. It relies on humans to change the pens and figu…
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Have you been unable to do this with the boolean operations or the cut path operation? I'd suggest that you actually try to modify the path in the way that you want, rather than just try to hide part of it.
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Great, glad to hear it!
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Have you tried adjusting the motor current yet? >It acts like they want to move, but more or less have the same pulse that the pen lift motor does. Again, can you please describe what kind of a pulse this is?
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Hi fire-497, When you enable the motors, do the steppers seem to actually energize-- that is, do they resist motion? Or, is there actually no apparent change? Do the steppers seem to move at all when you try to plot? And, can you describe what …
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I'm not sure that I understand the situation fully; perhaps you can clarify a few things: 1. Columns 0-16 are dim, and 17-25 are bright, even after swapping U4/U5. Correct? 2. Do you have some other LEDs that are not lighting correctly? 3. Hav…
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I'm not aware of any standard cable like that, although we have used one or the other end of one of the 6-pin rainbow cables for similar applications now and then: http://shop.evilmadscientist.com/productsmenu/partsmenu/586 These cables are pretty …
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Okay, so there must be something still screwy about the Pi's USB driver. Good to know for future reference, at least.
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If it is resetting, then somehow you must be triggering the Auto-Reset feature, that we use in programming. So, you need to disable the RTS# line on the FTDI interface. The solution, I believe, is found here: http://iijean.blogspot.nl/2012/05/ftdi-…
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RB6 does control row 7 of the LED matrix, which (with the sideways matrix) is what we'd normally describe as "the second column." Backing up a bit, "columns" 1,2, and 3 are driven by transistors Q7, Q6, and Q5, from resistors R7, R6, and R5. If…
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You can either post *a link* to it here, or contact us by e-mail-- our address is visible here: http://shop.evilmadscientist.com/about
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The Peggy 2 (or 2LE) can do it, but it is indeed overkill. Probably the most straightforward way to use it would be to wire up 6 rows rows of 10 LEDs each, meaning that you'd need to run a total of 16 wires to the Peggy. The Peggy 2 is 11.320x1…
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> So for a more complex figure (I don't know how to show one like you did) one would need to go through a lot of convolutions. Yes, but only in cases where you're starting from vector artwork made with white fills-- and that's a little less com…
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Yes, the pins can be bent by up to about 10 degrees, while still maintaining a good connection. If you need to bend more than that, you should probably consider how the things will connect together prior to assembling the connectors onto the boards…
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Okay, column #5 - the column directly under LED D4, is really "Row 4" in the matrix, starting with row 1 on the top (your right hand side) and working down. Row 4 is at pin 23 of the LED matrix socket, and is controlled by transistor Q3, through res…
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If I understand correctly, you mean this situation: If so, you can prepare the drawing for the eggbot, like so:
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The Eggbot draws with a pen, and consequently it is designed to only draw lines. It does not, on its own, see fills. The guideline that I posted above will allow you to see where the lines are in your drawing, and therefore, what will actually pr…
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I'm not sure exactly what the situation is here. To preview what the Eggbot will actually draw, select all, and then ungroup everything. Turn the fill type to "no paint" (none), and select a consistent stroke width, say 1 px. Then, you'll see all …
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It sounds like you may have had some extraneous lines or artifacts in your file that the Eggbot was trying to print, outside of the template area. A couple of things that you might try: - Import your file into Inkscape as an EPS drawing, rather…
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If the text comes into Inkscape as a set of curves (rather than as editable text), you do not need to do anything to it. If the text comes into Inkscape as editable text (rather than as a set of curves), you'll need to convert it to curves before pl…
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Inkscape natively handles the fonts already installed on your PC, and can write with them using its built-in text editing tools. The Hershey Text extension only *adds to* that set of fonts. The fonts that it contains are "engraving fonts" (by Mr.…
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Here's a project using an EiBotBoard and a RPi: http://www.evilmadscientist.com/2013/inside-out-eggbot/http://www.diga.me.uk/360degreeCamera.html So, it is possible, certainly. In that project, it enumerates as /dev/ttyACM0. You might try connectin…
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FWIW, we've had pretty good luck with just the ultimate GPS breakout, without any external antenna.
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A set of Octolively panels can be misaligned by about 10 degrees per connection, to fit along a curved surface. If a steeper curve is needed, you can use a ribbon cable (or individual wires) to connect them together. If you know in advance of build…
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The Eggbot motors use a similar amount of power whether or not they are turning, since the coils in stepper motors are continuously energized whenever power to the motors is turned on. If the motors are getting excessively hot, you may want to adjus…
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So, you may have a similar problem at one of those two LEDs. Those two lines are only involved in the blue, as you can see here: http://www.evilmadscientist.com/2010/on-the-design-of-the-bulbdial-clock/
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Well, we knew from the set of LEDs that were apparently connected that there was a partial short between LED1 and LED2, or a defect at D21 or D12, the two LEDs between those lines. When we received it, I checked those two LEDs. D21 worked fine, bu…
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I'm afraid that yes, this falls under "unwritten lore" of that cable. If it doesn't work, unplug one end, then the other. There must be something about the way the chip keeps itself safe that causes this behavior. For me, if it doesn't mount, I …
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Hi jj33, The FTDI cable (either in the 3.3 V or 5 V version) *should* work just fine on all three platforms, both for programming and serial communication. On the mac, you should indeed see it show up under /dev, as both /dev/cu.usbserial-xxxxxx…
