I have just purchased a PmodBT2 but I confused as to the pin numbering. J1 is marked with Pin-1 but along the row does it go in numerical sequence 1,2,3,4,5,6 and start from the row next to Pin-1 as 6,7,8,9,10 or is it alternate as in 1,3,5,7,9,11 and 2,4,6,8,10,12 along the other row?


Also the DS states that J1 6 & 12 are connected to J2-6 but, on measuring I have J1-6 & 12 joining to J2-5 !!!

Edited by Graham1904

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Hi Graham1904,

Looking at the schematic here it shows that on J1 pin 12 and pin 6 are tied to 3.3v which is what J2 pin 5 is tied to as well.

J1 is as follows:

pin 1 - RTS        pin 2 - RX          pin 3 - TX      pin 4 - CTS     pin 5 - GND       pin 6 - VCC(3.3v)

pin 7 - Status    pin 8 - /Reset     pin 9 - NC    pin 10 - NC     pin 11 - GND     pin 12 -  VCC(3.3v)

J2 is as follows:

pin 1 - MISO      pin 2 - MOSI     pin 3 - SCK    pin 4 - /CS     pin 5 - VCC(3.3v)    pin 6 - GND

I have included screen shots of J1 and J2 of the schematic. Hope this helps!





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