A: Some clones are sold as "kit only." You need to solder standard 8-pin and 6-pin stackable headers yourself. Use a vice to hold the headers straight while soldering.

Arduino Uno R3 | |-- D2-D13 ---> 3-pin headers (S/V/G) |-- A0-A5 ---> 3-pin headers (S/V/G) |-- ICSP ---> SPI devices |-- +5V/GND ---> Powers shield logic | EXT_PWR (+5-12V) --[SJ1 jumper]--> Servo/V+ pin on digital headers

void loop() {}

Stop wrestling with jumper wires. Here is how to use the most popular breakout board for the Arduino Uno.

One of the most critical features of the V5.0 is its and SEL jumper . Simple guide to Sensor Shield V5 connections? Docs?