Caption: These parts and pieces here are required for finishing the tripod assembly in the field. From the top and around clock-wise are:
Hinge to unistrut legs connection -- 4 pcs each 1/4" cone nuts, 1/4" regular washer, 1/4" x 1" hex bolts
Pressure treated 2x12 to ground anchor -- 1-5/8" wood screw, 1/8" fender washer, 90 angle for unistrut, 12" spike and washer (although if budget allows the spike could be upgraded to a 24 or 36 inch screed stake for better anchoring performance).
2 pcs (spikes not pictured) spike washers for the unistrut leg ground anchor.
2 pcs each 1/4" cone nut, 5/16" fender washer, 1/4" x 1" Hex bolt... up to 1.5" may also and give you more flexibility on how to install the solar panel.
2 pcs wood screws to secure the wooden backpanel inside the actionpacker... Use something larger than 1-5/8" Maybe 2.5" instead. There is enough space in the way the plastic molding of the actionpacker is done that 3/4" wooden back plate + actionpacker & air space doesn't leave enough screw threads to get good purchase on the pressure treated 2x12.
Finally, for securing the cross arm to the two unistrut legs 2pcs each 1/4" cone nuts, 5/16" fender washers, 1/4" x 1" hex bolts (that could also be longer for more in the field flexibility).