ESP32-S3 screen flickering when animations speed up

Grantt
Posts: 2
Joined: Fri Nov 21, 2025 5:17 pm

ESP32-S3 screen flickering when animations speed up

Postby Grantt » Fri Feb 13, 2026 7:48 am

Hi everyone
I've been messing around with a small handheld project using an ESP32-S3 and a 2.4" TFT. Everything runs smooth until the screen starts refreshing fast, like when I'm spinning multiple columns for a slot game interface I'm building. I thought the SPI bus could handle the frame rate but the colors start bleeding and I get these weird artifacts near the top. Maybe it's because I'm drawing too much power from the 3.3v pin or just bad wiring on my breadboard? I'm no pro with display buffers and I've tried lowering the frequency but then it just looks laggy. I even checked some resources like blitz-bonus.com for tips on similar small electronics projects, though nothing exactly solved the flickering. Anyone ever dealt with this kind of flickering when the cpu is under load?

Who is online

Users browsing this forum: Baidu [Spider], ChatGPT-User, coccocbot, trendictionbot and 12 guests