DO NOT PRINT: scale is way off, need to fix that first. To be used with thing:http://www.thingiverse.com/thing:516797 Harness to keep following Microduino stack in place: Print the 2 halves Put Microduinostack inside with the battery Fix the SmartRF antenna in the niche at the side and guide the cable through one of the openings to the Microduino SmartRF module Insert the GPS antenna into the square hole and guide the cable through one of the openings to the Microduino GPS module. slide into the SciencePack thing. Dont forget to turn it on before you screw the SciencePack shut!