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Windell Oskay
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- Windell Oskay
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As a starting point, download the datasheets for both matrices, and compare which pin does what on each matrix.
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So, did you build this from scratch, starting with the Meggy Jr RGB PCB? If so, make sure that you're using a preprogrammed "Arduino" ATmega328 (such as the preprogrammed ones from our shop), not a "bare" ATmega328 from the manufacturer. In any c…
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Ah-- didn't read closely enough. That cable uses the PL-2303HXD IC -- Windows can auto-download the driver for it.
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Once the kit is put together and powered on -- assuming that you've finished assembly -- there is a built-in (preprogrammed) game there, with lights and sound. You should definitely try and get to the point of having that working, so that you know t…
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*Ignoring* programming, can you please say whether the Meggy Jr is working correctly? Does it power up, and make light and sound? Second, can you please say exactly what programming interface you are using? Is it the Adafruit FTDIfriend? Is it an FT…
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Is the Meggy Jr working correctly otherwise? You note that the chip is in the correct orientation -- if that's a concern here, then it seems like you may not yet be up and running otherwise. And, exactly which programming interface are you using?
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Quite a few people have just gone ahead and wired it up for USB power. The theoretical issue is that the Meggy Jr can draw more power than the port is rated for, with the theoretical consequence that it could destroy the USB port on the computer. Ho…
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Use the same techniques that you would with any other op-amp. The hard part is usually understanding what each of those terms really mean in the real world-- once you do, it becomes somewhat reasonable to start to design your own tests with them. Y…
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Perfect. You might want to add a drop of hot glue in the middle of each jumper wire, to prevent the wires from getting eventually broken off.
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The LEDs are almost never actually "bad" -- in a bag of 1000, I would expect to find zero duds. However, they can be damaged in the installation process, either in the stage of bending out the leads (most likely situation in this case) or during sol…
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For the isolated LED, check the soldering-- most likely issue. Could also be backwards or damaged-- may need to be replaced. For the colums out, there appears to be a break or scratch in the vertical wire (trace) on the back side of the pcb. You m…
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The "flowroot" is the box around flowed text. That is to say, when you type text into a box, that box has a representation in your SVG file that is the "flowroot." The most likely case is that you've still got some text in your document there that…
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First: there is essentially no chance that you messed up the servo motor on your own. Historically, these servos have been extremely reliable; I've never heard of one being ruined by following our normal setup routine. However, it is very plausible …
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It will fit, but it will not wrap around seamlessly. Depending on what you are drawing, this may be optimal or suboptimal.
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That will *probably* not work. The larger vertical range (1044 vs 800) means that you'll be asking the pen to go further "north" and "south" (using a globe model), and it will likely bump into one or both of the egg couplers.
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There is not a fixed relationship between the template and the number of inches that artwork will take up. That relationship depends both on the size and shape of the object that you are drawing upon. The units on the template -- pixels, not inches …
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First off, your page size should be 3200 x 800 pixels, not 3400 x 800. You may want to start with the EggBot template as an example. Can you please say what the issue is with changing the dimensions? At the "standard" 90 pixels per inch, that templa…
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> Sorry to differ with your previous experience with other customers, but if I can read 4+ volts at the base leads of the LEDs in the correct polarity, and they do not light, I would have to believe the LEDs are at fault. I did not say (nor int…
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The "DOA" failure rate of the actual LEDs is very low-- if we were to install 1000 in a panel, we would expect zero failures. However, they can be damaged by overheating or by physical stress. Is it possible that your soldering iron tip is not *sh…
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mlowe.115 is correct: you can just delete the outline after adding the hatch fill. After performing the hatch fill on an object, the new fill is grouped with the original (outline) object, so you'll need to ungroup them in order to delete the outlin…
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We don't have a good way to post pictures here, but we do have a flicker group ( https://www.flickr.com/groups/evilmadscience/ ) that we maintain for the purposes of posting pictures.
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Are you getting any kind of error message on your computer? We have heard of this happening in several different case like this (but with an error message) when someone was using a USB extension cable. If you are not getting an error message, t…
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Also: I saw that you tried to post this message to the user group as well. I did not forward it to the group since I've already followed up here.
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First, always try a second time when you get that message. Things almost always "just work" on the mac, so if they don't (by the second try) it's probably a hardware problem. Try connecting just the EBB to your computer, without the power supply…
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Looks like you're more on top of this than I am! Yes-- do what the diagram says, not what I say.
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If you can't fix it with a screwdriver, then we can send you a new wooden block to go there. You could also glue a piece of wider wood (or metal, maybe a coin?) there to bridge the gap. (And, thanks for noticing!)
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In general, it's a bad idea to re-solder connections unless you have a specific reason to do so. We've seen quite a few boards destroyed by unnecessary re-soldering. You can use your multimeter (with the Bulbdial unplugged) to check the resistance…
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Yup, that sure looks like it misses! The wood is bit far to the left, and the servo horn is bend the other way a little bit. If you very slightly loosen the two phillips-head screws on the top, you may be able to move the wooden piece over so that …
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There should not be any negative voltage anywhere. So, you may not be measuring what you think you're measuring. And in any case, there is not a DC voltage that can be measured there; it's an oscillating signal that you can view with an oscilloscope…
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Which EggBot version are you using?
