Are these two Arduino Pro Micros jumpered correctly?
I picked up a couple of cheap Pro Micro's off eBay a while back (http://www.ebay.com/itm/310634777706). Both are blue, and have no brand identifier on them (ie, Adafruit, Sparkfun, etc.).
My challenge here is that I couldn't seem to get them to be identified by the IDE, so I'm trying to figure out just which they are. I know they are Pro Micro, but still not sure about the 3.3V vs 5V part.
Here's a summary of what I know...
The product description says 5V
The boards are marked "V11"
The voltage regulator on the board is a mic5219 labeled LG50 (which is 5v)
The spot on the back where one can mark "5V" or "3.3V" on the circuit is not marked
The schematic (http://dlnmh9ip6v2uc.cloudfront.net/datasheets/Dev/Arduino/Boards/Pro-Micro-v11-5V_B.pdf) states for the jumper "Closed for 5V version"
The J1 jumper is NOT bridged, which would imply it's configured for 3.3V (?)
So there's the quandry. 5V regulator, but J1 not bridged as for 3.3V? 3.3V?
Here are some photos...
Any suggestions on how I can precisely identify the boards or at least know if they in fact are 5V but should have J1 bridged? It seems based on the voltage regulator that it's 5V, but then J1 should be bridged if this was the case.
I picked up a couple of cheap Pro Micro's off eBay a while back (http://www.ebay.com/itm/310634777706). Both are blue, and have no brand identifier on them (ie, Adafruit, Sparkfun, etc.).
My challenge here is that I couldn't seem to get them to be identified by the IDE, so I'm trying to figure out just which they are. I know they are Pro Micro, but still not sure about the 3.3V vs 5V part.
Here's a summary of what I know...
The product description says 5V
The boards are marked "V11"
The voltage regulator on the board is a mic5219 labeled LG50 (which is 5v)
The spot on the back where one can mark "5V" or "3.3V" on the circuit is not marked
The schematic (http://dlnmh9ip6v2uc.cloudfront.net/datasheets/Dev/Arduino/Boards/Pro-Micro-v11-5V_B.pdf) states for the jumper "Closed for 5V version"
The J1 jumper is NOT bridged, which would imply it's configured for 3.3V (?)
So there's the quandry. 5V regulator, but J1 not bridged as for 3.3V? 3.3V?
Here are some photos...
Any suggestions on how I can precisely identify the boards or at least know if they in fact are 5V but should have J1 bridged? It seems based on the voltage regulator that it's 5V, but then J1 should be bridged if this was the case.
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