X="5.4" y="5.6"/> - 2 5mm LEDs - Consider: 1 simple on/off switch/button/knob/etc. - 2 5mm LEDs Fab Plant Research Pages Fab Plant Research Table of Contents Findings Template Places to investigate. Note next to transistors to save on panel wires 2eebdf7ecf Add four more switches/buttons, move LED drivers onto PCB Add four more switches/buttons, move LED drivers onto PCB added the once through idea with commentary by added the once through idea with commentary by added the once through idea with commentary by Correcting changed filename in .prl gets jiggy with PCB cutout, light-direction upwards, see http://www.kodenshi.co.jp/products/pdf/sensor/photointerrupter_ref/SG-105.pdf Laser Diode, TO-38-ICut, 3pin Laser Diode, TO-56, 3pin lightpipe triple tower right angle right angle Surface-mount DC Barrel Jack, https://cdn-shop.adafruit.com/datasheets/21mmdcjackDatasheet.pdf Barrel jack connector.