<?xml version="1.0" encoding="UTF-8"?><rss xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:content="http://purl.org/rss/1.0/modules/content/" xmlns:atom="http://www.w3.org/2005/Atom" version="2.0"><channel><title><![CDATA[M5stack timer camera error: cam hal: ev-eof-ovf]]></title><description><![CDATA[<p dir="auto">Subject: "CAM HAL: EV-EOF-OVF Error – OV3660 Freezing After 5-10 Seconds"</p>
<p dir="auto">Hi everyone,</p>
<p dir="auto">I'm using an M5Stack camera with the OV3660 sensor, and I'm experiencing an issue where the camera freezes after 5-10 seconds. The serial monitor repeatedly shows:</p>
<p dir="auto">CAM HAL: EV-EOF-OVF</p>
<p dir="auto">After resetting, the camera works for a few seconds but then freezes again with the same error.</p>
<p dir="auto">My Setup:</p>
<p dir="auto">Camera Module: M5Stack OV3660</p>
<p dir="auto">Power Supply: Stable 5V, 2.1A</p>
<p dir="auto">Firmware: camera web server</p>
<p dir="auto">Frame Size: UXGA (1600x1200), SVGA (800x600), QVGA (320x240)</p>
<p dir="auto">PSRAM: Enabled</p>
<p dir="auto">fb_count: 1 / 2</p>
<p dir="auto">Troubleshooting I've Tried:</p>
<p dir="auto">✔ Reduced frame size (tried QVGA, SVGA)<br />
✔ Set fb_location = CAMERA_FB_IN_PSRAM<br />
✔ Adjusted jpeg_quality (tried 10, 12, 15)<br />
✔ Increased fb_count to 2</p>
<p dir="auto">Despite these changes, the CAM HAL: EV-EOF-OVF error still occurs, leading to camera freezes.</p>
<p dir="auto">Could this be a buffer overflow, PSRAM issue, or something else? Any help would be greatly appreciated!</p>
<p dir="auto">Thanks in advance.</p>
]]></description><link>https://community.m5stack.com/topic/7353/m5stack-timer-camera-error-cam-hal-ev-eof-ovf</link><generator>RSS for Node</generator><lastBuildDate>Wed, 29 Apr 2026 06:31:33 GMT</lastBuildDate><atom:link href="https://community.m5stack.com/topic/7353.rss" rel="self" type="application/rss+xml"/><pubDate>Tue, 04 Mar 2025 18:37:52 GMT</pubDate><ttl>60</ttl></channel></rss>