Today we:

• mounted the EC150, 
• reworked the guying and winch, 
• added cable ties
• wired up the second battery
• shot boom angles with handheld compass.  2D N is to the SW at an angle of 130deg; 3D into the boom is 132/135 degrees.  (These were with no declination set.  With declination at the BAO of about 11 degrees E, these values should be 141 for the 2D and 143 for the 3D.)
• verified that Qsoil #16 (at 20cm) is I2C address 29. (by unplugging cable 16 and verifying that 29 went to nan).