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TechXDAabout 4 hours ago
ESP32 e-paper weather tracker lasts 1.5 years on one chargeGitHub user ngai-jeremy built an ESP32 e-paper weather station that claims over 500 days on a 1,500mAh battery. The estimate relies on firmware tweaks reducing wake time to 4.3 seconds per refresh. The claim remains unproven until a full test is completed.
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