Dual Pogo Pins Probe Clip for Dual Castellated Modules

thingiverse

This is a pogo pin adapter for boards using dual castellation for surface mounted modules. It takes advantage of and requires the use of cutouts under the modules as an alignment aid for the pogo pin positioning and 3D printed retention clips. To assemble, you'll need to insert the pogo pins first, then place the modules on top and solder them to the pogo pins' legs. Note that a test print is required before final assembly due to tight tolerance requirements, which may vary between printers. However, once the design is dialed in, prints are repeatable. Revision 2 addressed issues with a module requiring different dimensions and additional contact points on top of the board. This adapter was specifically designed not to require infills, printed using a 0.8mm nozzle at 0.2mm layer height, taking 54 minutes to complete. Accurate z-axis calibration is crucial for proper alignment. Default design specifications include: * Probe pin extension/spring length: 3mm * Body of the probe: 13mm * Probe pin diameter: 1mm Castellation module specs (Rev 1): * Module x length: 49.4mm * Module y length: 27.5mm * Cutout area: 49.4mm * Pin pair count: 18 * Spacing between probes: 2.54mm * First probe spacing from bottom of module: 4mm Castellation module specs (Rev 2): * Module x length: 49.4mm * Module y length: 27.5mm * Cutout area: 48.3mm * Pin pair count: 18 * Spacing between probes: 2.54mm * First probe spacing from bottom of module: 3mm Design notes: * A simpler clip design was chosen after testing, as it proved to be more reliable and efficient. * PCB positioning was adjusted to ensure proper spacing from the pogo pins, reducing strain on the retaining clip. * Sharp tooth pogo pins were used, but may not be suitable for high-current devices; multiple contact point heads are recommended instead.