What size screws to use for fixing a cube2.1 to a mini carrier board?
When I recieved my cube2.1 and mini carrier board (one of these from Bask Aerospace, a Proficnc reseller), they did not come with screws for fixing the board to the cube. I need to source some, but do not know what size to buy.
I can see from the docs of the full size carrier board that it uses M1.6*20mm screws. I can not see if, with the full size carrier, if the screws are going through case+PCB (and are therefore longer than they need to be for the mini carrier board) or if it’s the same as the mini carrier board, directly fixing the PCB to the cube2.1
It would be better if it had come with these screws included
I hot-glued it to the bottom of a vibration-mounted plywood shelf (mounted right-way up, access from underneath) that also holds the batteries on the topside. So far so good.
It’s in a gasser (warbird, DLE-20RE), have run it on the ground but not yet maidened. Project stalled temporarially due to work, but my intention is to tune the avionics tray damping carefully to ensure there is no oscilation/clipping before maiden. The tray has 5S2P NiMiH cells + receiver + autopilot in rigid plywood box, so it is rigid and has significant mass. It’s on stiff rubber mounts that are loaded equally, in a plane that passes through the CoG of the assembly, at a tangent to the primary oscilation (rotational from the engine). For tuning the mount, I was going to experiment packing different velocity foams (e.g. classic latex) in the opposite corners of the box to the stiff mounts.
I could cut some standoffs to the same size as the rubber mounts, and swap them out to effectively hard-mount the autopilot. I haddnt thought of trying that but it would give me a baseline for comparing the effectiveness of the damping at different RPM so I probably should try that.
It hadnt occured to me that the hot glue would fail. It’s a big juicy fillet that seems really solid. I’d probably want to paint the ply (e.g. polyurethane) before expecting tape to stick to it. Is the 3M tape you are recommending the same stuff that came with the Here GPS?