Issues with Arduino mega and ultra Sonic sensors

[PeteKnight]

My advice to you is the same as the advice I gave here…

Blynk connected but BLYNK_WRITE() not triggering

Despite this YouTube video appearing to show a working project… [AUTONOMOUS/MANUAL TRASH COLLECTION-SEGREGATION ROBOT WITH IOT TECHNOLOGY] any Blynk regulars looking at this code know that it wouldn’t work reliably with Blynk, because of all the blocking delays. The problems with this code are too numerous to mention, and as you’ve obviously taken someone else’s code rather than writing your own I guess that you probably don’t have the coding skills to fix these issues. My advice…

Also, your sketch uses Blynk Legacy, which will stop working on 31st December 2022 (in 40 days time).

Pete.