$2 for 2Layer, 5pcs & $5 for 4Layer, 5pcs: https://jlcpcb.com Previous video: https://youtu.be/05qJM-zZ4ng uC Timer video: https://youtu.be/IdL0_ZJ7V2s Facebook: https://www.facebook.com/greatscottlab Twitter: https://twitter.com/GreatScottLab Support me for more videos: https://www.patreon.com/GreatScott?ty=h More project information (schematic, code,….) on Instructables: https://www.instructables.com/id/DIY-Tachometer-RPM-Meter/ Parts list (affiliate links): 1x Arduino Pro Mini: https://s.click.aliexpress.com/e/_dTWuuYz 1x IR Distance Sensor: https://s.click.aliexpress.com/e/_dXlui7F 1xContinue Reading

Have fun and win via JLCPCB E-exhibition: https://jlcpcb.com/E-exhibition $2 for 4-Layer PCBs: https://jlcpcb.com Previous video: https://youtu.be/RoSIzgvEGtA Home Assistant video: https://youtu.be/IvI1RqYPO24 Power video: https://youtu.be/cxXmWZDwNEs Facebook: https://www.facebook.com/greatscottlab Twitter: https://twitter.com/GreatScottLab Support me for more videos: https://www.patreon.com/GreatScott?ty=h More project information (pictures, schematics,….) on Patreon: https://www.patreon.com/posts/esp32-power-43701117 Parts list: (affiliate links) ESP32: https://s.click.aliexpress.com/e/_AfKZrJ Current Transformer: https://s.click.aliexpress.com/e/_A661E9Continue Reading