This is a remix of the AT Switch by ATMakers. This has been adapted to accommodate a larger-diameter spring along the outside of the center post. Wire recesses are located on both sides of the post to prevent the cable from interfering with the spring function. This provides more options to change the response of the switch activation or to allow for use of a wider variety of springs.

3.5mm headphone plug https://www.digikey.com/short/p3fb5m

12mm tactile switch https://www.digikey.com/short/p32z7t https://www.adafruit.com/product/1119

22 AWG stranded wire

INTERIOR SPRING OPTIONS Hillman 94 Compression Spring #540281 https://www.hillmangroup.com/us/en/Home-Solutions/Home-Accessories/Springs/Compression-Springs/Hillman-Compression-Spring/p/540281

3/8" OD, 0.026" Wire, 1-1/2" Free Length, Compression Spring https://www.mscdirect.com/product/details/05368139

0.6 x 9 x 5mm Stainless Steel Compression Springs https://www.amazon.com/gp/product/B07HCQ279X/

EXTERIOR SPRING OPTIONS Hillman 156 Compression Spring #540467 https://www.hillmangroup.com/us/en/Home-Solutions/Home-Accessories/Springs/Compression-Springs/Hillman-Compression-Spring/p/540467