adafruit learning system Joy Featherwing Manual page 9

Add the FeatherWing:
Place the featherwing over the pins so that the short
pins poke through the two rows of breakout pads
And Solder!
Be sure to solder all pins for reliable electrical contact.
(For tips on soldering, be sure to check out our Guide to
Excellent Soldering ).
(https://adafru.it/aTk)
Start by soldering the first row of header
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