Labels Milestones
BackThrough-hole, https://www.cuidevices.com/product/resource/pdf/sj1-352xn.pdf TRS audio jack stereo horizontal waterproof 6.35mm (1/4 in) Vertical Jack, 3 x 6mm drills 3 pin Molex connector 2.54 mm spacing R23, R24, R25, R27 Switch, triple pole double throw, separate symbols | | S1 | 1 | SW_SPDT | Switch, single pole double throw Precision Timers, 555 compatible, PDIP-8 Quad operational amplifier, DIP-14"/>