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BackThat is, fat traces to chip power, but not to front panel and Pin 1, vertical PCB mount, https://www.neutrik.com/en/product/ncj6fi-v-0 Combo I series, 3 pole XLR female receptacle with 6.35mm (1/4in) stereo jack, horizontal PCB mount, additional ground contacts, https://www.neutrik.com/en/product/nc3fbh2-e B Series, 5 pole male XLR receptacle, grounding: separate ground contact to mating connector shell and front panel, horizontal PCB mount, (http://www.qingpu-electronics.com/en/products/WQP-PJ398SM-362.html WQP-PJ398SM WQP-PJ301M-12 TRS 3.5mm mono vertical jack.
- Https://product.tdk.com/info/en/catalog/datasheets/piezoelectronic_buzzer_ps_en.pdf piezo buzzer self.
- 15.2x8.3mm^2 drill 1.3mm pad 2.5mm terminal block.
- A wire. Assembly Notes: Do not assume anything.