Post AyRmFhtQG2ns8J3f16 by foxylad@mastodon.nz
 (DIR) More posts by foxylad@mastodon.nz
 (DIR) Post #AyRmFhtQG2ns8J3f16 by foxylad@mastodon.nz
       2025-09-20T00:22:01Z
       
       1 likes, 0 repeats
       
       I have an #ESP32 programmed in #micropython that wakes every five minutes to check the temperature of a water tank. If the temperature (or it's battery voltage) drop below certain level, it texts me. Otherwise it goes into deepsleep for another five minutes.All this is powered by a 3.3V 400mAh Lipo battery. I set it going on Aug 1st, and I've just had a text to say it's battery is low - 50 days!