Polhemus Transmitter Box Holder

thingiverse

Mounting Bracket for Polhemus Fastrak Digitizer Transmitter We use a Polhemus Fastrak Digitizer system to digitize sensor locations worn by subjects using the Brainstorm Toolbox for MATLAB (http://neuroimage.usc.edu/brainstorm/). To mount the transmitter on a chair back, no off-the-shelf solution exists. We created one. 01/23/15 - Bad file replaced Found a problem with TransmitterBox_FlatBack_3.14.stl; it has been replaced with a good one. 01/12/15 - Updated version added Added TransmitterBox_FlatBack_3.14, the final version of this model, with flat back and large access holes for easier pilot hole marking. 01/09/15 - New version added Added TransmitterBox_CurvedBack_3.13; printed it out and mounted it on a chair with great results for curved chairs; holes enlarged for pencil fitting. This is a solid model. One potential improvement: drilling 4 holes in the bottom of the holder so screws can go up through it into transmitter threads. But, this may be overkill. 01/08/15 - New version added Added TransmitterBox_CurvedBack_3.11; this has bigger access holes to accommodate pencils and a curved back for chairs with curved backs. This model will undergo further testing. 01/05/15 - Testing successful Used TransmitterBox_CurvedBack_3.9, installed on a chair during subject visit. The researcher loved it! We'll only improve from here. Design notes: pilot hole size will be adjusted to final settings after this. 12/29/14 - Further testing done Adjusted version 3.9 to match usability standards and modified manual testing prior to further printing. It's ready for download. PLA is not recommended; use ABS if your chair has a curve. Poor pilot hole spacing led to cracks, be careful. Future improvements are on the table, such as taking into account curved chair backs or better marking lower pilot holes. Your comments would be valuable! Developed by Graham Holt (https://www.linkedin.com/profile/view?id=32946354) Institution: Laboratory of Cognitive Neuroscience at Boston Children's Hospital (http://www.childrenshospital.org/). Model developed using FreeCAD (http://www.freecadweb.org/). Instructions Curved chair owners, use the curved back file; flat backed chairs use the flat back file. Brass screws with 1/2" diameter work best as they're non-ferrous. Use the holder to mark pilot hole locations and drill an appropriate depth according to your chair's thickness and hardware. Finally, screw in the transmitter holder.