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Difference between revisions of "Door Access"
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* NOTE: Please contact Max or Yardena or Jae or Andrew for the secret. | * NOTE: Please contact Max or Yardena or Jae or Andrew for the secret. | ||
* NOTE: You can also unlock the door by appending '_close'. | * NOTE: You can also unlock the door by appending '_close'. | ||
=== Update 2/16/2014 === | |||
just document the chip that is there, on the beige protoboard, and document the color of the motor wires going to which pins on that chip | |||
here is the PDF for that chip: | |||
http://www.ti.com/lit/ds/symlink/l293d.pdf | |||
we are using the 16 pin version. You should document which color stepper-motor wire goes to which pin (1Y 2Y 3Y 4Y) on the chip. | |||
Also i wrote on the plastic housing the wire colors, in a way that was obvious to me which wires were pairs. There are four wires, which represent two windings in the motor. I call the wires for a winding a "pair" and we should document that, because a different stepper will have different color wires but will still have two pairs, or two windings, which we can determine from measuring with a meter. | |||
if you tell me what i wrote on the 3d printed lock housing, i will explain better what it means. | |||
you might also document which pin of the L293 chip goes to which pin of the TI MSP430 microcontroller board. This might be documented in the software but not very well, so we should explicitly record it. | |||
Of course there is a lot of info in Jaekwon's github pages, but that data should be forked immediately to sudoroom's github. | |||
the "fix" the other day consisted only of repairing the connections from the motor to the L293 chip, and also i added a capacitor (which should have been there already) and i changed the power supply to 19V insteafd of 12V | |||
[[Category:Projects]] | [[Category:Projects]] | ||