Use of free GPIO ports

Question

Are there any free GPIO ports that I can use? If so, which ones? What would be the best way to use them? Soldering? Thanks!

guussie · Accepted Answer

Thanks for this answer, which I think is incorrect for my version of the RPi (B+) but it helped me to find the correct answer. Free GPIO pins are connected to the Expansion Header on the Audio Card. The Expansion Header is the header next to the SPKOUT connections. Pin 1 is the pin right next to SPKOUT R+. The available GPIO pins are as follows: Exp pin RPi pin GPIO ------------------------------------- 1 2 5V 2 - 3.3V 7 6 GND 8 6 GND 13 6 GND 14 29 5 16 22 25 17 31 6 18 32 12 19 36 16 20 37 26

clem57 · Answer

From the user manual: Cirrus Logic Audio Card User Manual , here is a chart:(15-20 look available) Thanks fvan For showing where. Clem PS. the best way is to use headers soldier on so you can connect other cards and/or use them with correct wires.