This professional GNSS case is designed to be compatible with the SimpleRTK2B (v1.0) from ArduSimple that is powered by a u-blox ZED-F9P chip for cm-level RTK positioning. The case should fit all three versions of the ArduSimple RTK board, including the version with Arduino Headers pre-soldered and the ZigBee long range module version (after popping out a pre-scored hole).
For robust protection, you will want some M3 (3mm diameter) machine screws. It is recommended to use 4 M3x12mm and 3 M3 x 6mm hex machine screws to secure the case lid and board. Before ordering screws, you may want to print and test your board. The top cover is quite snug without the screws, especially if you want easy access to the status LEDs. As a side note, the case was designed to be stack-able and can also stand on it's edge to take up less desk space.
It prints most reliably in Carbon Fiber PLA at 0.3um layer height and will print very cleanly at 0.2um height at a reduced print speed. The support material and bridging should be turned off, as long as your print head has a cooling fan. For the most protection, it is highly recommended to print solid at 100% in-fill.
Over 100 hours and 20+ prototype prints went into making this design with special attention to protect the case from cracking, if dropped or crashed from a UAV, so please do not use for commercial purposes without permission. In the near future, check back for a deluxe version of this case that screws onto a professional 5/8" survey pole with integrated magnetic antenna holder and an ultra-light version with tie-down holes for UAVs. Mahalo.
Ziro Carbon Fiber PLA
There may be some fine threads lefts over where bridging occurs. You may want to clean these up with water under a faucet or with a hobby knife. Depending on your filament and printing tolerances, some very light trimming may be needed to make the top fit snug, however the design already has taken some of this into account.