The Kit does require a little light soldering. In theory you could use all the parts and build them onto a breadboard, but the coin holder is a little difficult since its not breadboard-friendly, so please go ahead and build the kit.
When building the kit, leave out the 2.2KΩ resistors - by leaving them out, we force the RTC to communicate at 3.3V instead of 5V, which is better for the BBB!
- Connect VCC on the breakout board to the P9_5 (VCC 5V) or P9_7 (SYS 5V) pin on the BBB. NOTE: The P9_5 VCC 5V pin will only be powered if a 5V adapter is plugged in to the barrel jack. If powering over USB use the P9_7 (SYS 5V) pin instead!
- Connect GND on the breakout board to the P9_1 (GND) pin on the BBB
- Connect SDA on the breakout board to the P9_20 pin of the BBB
- Connect SCL on the breakout board to the P9_19 pin of the BBB
DONT FORGET TO POWER IT FROM 5V - THIS IS FINE AND SAFE FOR THE BBB - JUST MAKE SURE TO REMOVE THE 2.2K PULLUPS AS MENTIONED IN THE LARGE RED BOX UP ABOVE TO KEEP THE I2C PINS AT 3.3V LOGIC LEVELS
Verify your wiring by running i2cdetect -y -r 1 at the command line, you should see ID 68 show up - that's the address of the DS1307!