Intervalometer for Canon M50: Canon EOS M Talk Forum: Digital Photography Review
Canon EOS M50 - Shooting in Bulb Mode - YouTube
Canon 70D tip #13: Your iPhone as an intervalometer for free! - YouTube
DLC Interval Shutter Release
Amazon.com: Timer Remote Shutter Release Intervalometer for Canon EOS R6, EOS R, EOS RA, EOS RP; for Fujifilm GFX100, GFX100S, GFX50R, X-Pro3, X-T4; for Olympus OM-D E-M1X, E-M1 Mark II, E‑M1 Mark