Forum Replies Created
-
Posts
-
They are used to communicate with neighbors, for synchronization of the IR signals, which can avoid false positives. You can include them or not.
There are quite a few different solutions. The right one for you will depend upon factors including the speed that you require, the current carrying capacity, and so forth.
Depending on your application, you might be able to just use a transistor instead of a relay.You could use a solid state relay, that can be driven directly from 3 V.You could use a mechanical relay, that can be driven directly from 3 V.You could use a transistor to drive the coil of a relay that requires higher voltage and/or current.There are several different “2.0” versions– please make sure that you are using the latest, “v2.0.0 Beta 3”.
Can you also say which platform (Mac? Windows?) you are using?All of our source code is open source; you are welcome to look through our documentation pages and find the specific resources that you are looking for.
I’m not sure exactly what you’re asking for. We don’t have any example code for things like using voice control on the AxiDraw.
Yes, that would be best practice.
The servo control signal is not an “on/off” signal– it’s a command to move to a particular angle. If you need an on/off, I’d recommend putting it on a second I/O port, just so that you can always switch back and forth with software alone.
There is not, but you can add one. The EBB has four three pin “servo outputs” available. The lowest of them (B1) is used for the pen lift servo. The other three (B0, B2, B3) are available for your use.
What you will need to do is to modify your software to add the command to turn the output on or off at the same time as you raise or lower the pen. If you’re using the standard Inkscape-based software, then you’ll want to open up and edit the script called “ebb_motion.py” in your Inkscape extensions directory. In that file, look for the sendPenUp and sendPenDown command definitions. There, you can add another line to send the I/O pin on or off command. Depending on what you’re actually doing, you may prefer to replace the pen up/down movements with just the pin on/off commands.
You might want to look at the “sendDisableMotors” command definition to see how we set up a one-liner command with no variables, as
ebb_serial.command( portName, 'EM,0,0r').For the actual command to send, look at the PO command in the EBB command set documentation:
http://evil-mad.github.io/EggBot/ebb.html#PO , and note that you will need to send a PD command beforehand.You may also want to refer to this discussion about adding a laser control: http://forum.evilmadscientist.com/discussion/comment/1992
Not directly; the EBB operates at an internal logic-level voltage of 3.3 V, and its I/O pins are just below this. If you need 5 V, you’ll need to provide an external logic-level shifter.
OK, great. If you you do want to use an alternate power supply, it should be 9 V DC, regulated, with at least 1.5 A true capacity, on a 2.1 x 5.5 mm center-positive plug.
Great– always glad when there’s a clear solution. :)
EBB documentation in general is here: http://www.schmalzhaus.com/EBB/
The command set, in detail, is here: http://evil-mad.github.io/EggBot/ebb.htmlIt sounds like you didn’t manage to actually install that copy of Inkscape on your computer. Or, if you did, it ended up somewhere besides where it was supposed to be.
That folder location is only present on recent versions of Inkscape, so that may also indicate that you don’t have things in the right places. All together, that sounds like you may have more than one copy of Inkscape on your computer.When Inkscape is open, hold down its icon in the dock to show the contextual menu. Then, select from the Options submenu there, “Show in Finder” to reveal the location of that copy of Inkscape. I’d recommend that you move it to the trash.Please make sure that you’re using the original power supply that came with the kit. Try plotting at a lower speed, perhaps 10%, to see if that helps. And, check to see if you’re using the latest software. The current version is v1.2.2.
Does the machine feel like it is physically damaged or broken, with parts loose or stuck? For example, when you move it to the home corner before printing, does it feel like something is jammed?
