Glue the USB Mini-B board for the Umarim lite to the right side of the end of the battery compartment.
Install two 3mm plywood boards 41mm by 10mm centered behind the fiber rod and aligned to the distance of the Umarim lite drill holes with CA. Fix the XBee pro with the Sparkfun board below the boards with Velcro.
Add a 3mm plywood board 41mm by 26mm one centimeter above the base of the fuselage. Drill holes to hold the Multi board before mounting. Install the Umarim lite with 1.6mm screws and servo rubbers in between.
Fix the Multi board with four screws and and servo rubbers.
The logger holding 3mm plywood board is 41mm by 30mm and installed 5mm behind the Umarim lite at the same level.
Add a 10mm EPP separator between the autopilot and the motor compartment. Connect the logger to the Umarim, add the micro SD card holder and the USB Mini-B behind the separator. Fix the logger on the board with Velcro.
Glue the MLX90614 infrared thermometer into the 25mm x 20mm pocket. Seal the metal sensor with the EPP to make it watertight. Bring the connecting cable to the fuselage. Close the pocket with the original (colored) EPP.