The rocketry components that you find here are a culmination of years of my experience as an electronics engineer being involved in high power rocketry. The components that I have developed are used in the design and fabrication of rockets with emphasis on deployment and tracker electronic bays. The electronic bay components allow for the re-use of bays between rockets and also to allow bays to be reconfigured as technology changes without having to rebuild completely. You will find support for 38mm BT60, 54mm, 65mm, and 75mm for all types of bays. There are also general purpose "assistants" to make building easier for wiring and marking holes for mounting.
The 54mm Dual Deploy Air Start Bay Kit is a complete set of SMT Designs parts that can be assembled into fully functional dual deploy air start electronics bay (customer supplies coupler tube, Altus Metrum EasyMega, and batteries).
The nosecone bay kit is a complete set of SMT Designs parts that can be assembled into a fully functional nosecone bay specifically for the FeatherWeight GPS and AltusMetrum EasyMini Altimeter (customer supplies coupler tube, electronic devices, and batteries).