Power Connections at j2.02 and j4.01?
Up to Devices and Hardware
I'm working on my own PCB using the Make Controller (similar to the appboard), and in the process of making an Eagle Device (and thus package/symbol) for the MC.
In the process, I find that I'm confused by the function two pins serve on the package. In particular, the document
http://makingthings.com/resources/schematics/make-controller-pinout.pdf
shows J2.02 as an unconnected pin, while J4.01 is shown as an LED connection.
Checking http://makingthings.com/resources/schematics/connections.xls however, shows that J2.02 is listed as a V+ connection, and J4.01 a V+ connection as well.
Can anyone clarify this discrepancy?
Thanks again for all the great work - I do very much enjoy the MC.
Actually, this gets weirder yet. In trying to connect the remainder of the pins on J4, I noticed that the numbering on the two documents seems inconsistent. In particular, the .xls file shows the pins ordered as the following:
J4.01 = V+
J4.02 = +3.3V
J4.03 = GND
J4.04 = GND
J4.05 = RX+
while viewing the .pdf shows the following
J4.01 = LED2
J4.02 = LED1
...
J4.09 = RX+
J4.10 = GND
J4.11 = GND
J4.12 = +3.3V
J4.13 = N.C.
In this case, it seems pin 1 is mislabeled somewhere, and that they're ordered backwards.
A 'bump' on this topic, as these documentation bugs are kindof show stoppers for me. While I can go ahead with my guesses on this one, one generally shouldn't fab PCB's without being certain of the situation. Any help available?
Hi Greg - thanks for your patience. I just updated this document, I hope I got all the bugs troubling you.
In general, the schematics are the final word - I created the pinout because I found it useful when wiring things up, etc. but hadn't used it to design a PCB from. Thanks for spotting those inconsistencies.
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