Laser XY projector

thingiverse

My family participates in <a target="_blank" href="https://healthbeat.spectrumhealth.org/light-up-the-night-for-kids-childrens-hospital-project-nightlight-community-support/">Project Night Light</a>. To do something special I wanted to put on Laser light show. This was the inspiration for this: https://www.instructables.com/id/Arduino-Laser-Scanner/ The final product is a laser projector that will be controlled via WIFI from a phone inside a browser connected to http://192.168.4.1 WEB UI: <img src="https://cdn.thingiverse.com/renders/8d/cd/2d/a0/02/29853f803e2d97ef71214fb75277ab1a_preview_featured.jpg"> Items needed: - WeMOS wifi UNO ( https://www.aliexpress.com/item/OTA-WeMos-D1-CH340-CH340G-WiFi-Development-Board-ESP8266-ESP-12-ESP-12E-Module-For-Arduino/32832380308.html?spm=a2g0s.9042311.0.0.27424c4ddqV3XY ) $3.41 - 2 x stepper drivers ( https://www.aliexpress.com/item/1pcs-lot-Reprap-Stepper-Driver-A4988-green-red-color-Module-with-1pcs-Heatsink-2-colours-Stepper/32868481060.html?spm=a2g0s.9042311.0.0.3da24c4dLWsH4B ) $0.91 - 2 x NEMA14 steppers 0.9deg ( https://www.ebay.com/itm/NEMA-14-Stepper-Motor-0-9deg-400step-rev-0-4A-15-6oz-in-with-15T-Copper-Gear/132683773382?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2057872.m2749.l2649 ) $10 + shipping - 2 x 100mF capacitors ( couple of pennies ) - some wires - 2 x mirrors (either laser mirrors or HD platter mirror cut to size) - 2 x small bearings (OD: 10mm, ID: 3.15mm) - 1 x laser module (designed for lasers with 12mm OD) - 1 x power supply (12V) - 3 x connector for uno (2 for stepper drivers, 1 for power and ground) - 1 x step down converter from 12V to 5V for laser - 1 x PCB board for wiring up the drivers - assortment of M3 screws - solder and soldering station Testing indoors: https://youtu.be/0PBSU1zWrfc Testing outdoors, long range projection: https://youtu.be/sf-cKriMoB0