- Mon Sep 21, 2015 4:06 pm
#29611
That's a clever approach. Being so used to having real-time monitoring information at my finger-tips, it had slipped my mind that there often isn't a need to report a sensor reading via wifi every time the sensor is sampled. For many applications, trading frequent reporting of sensor information for years of battery life would be more than acceptable, as long as the sensors were sampled frequently. I've got a bunch of environmental monitoring projects where this would be completely acceptable.
torntrousers wrote:Like schufti said already, the ESP can be pretty low powered - use sleep and switch the raido off when its not needed. I've this one running off a couple of AA batteries waking up once an hour with the radio off and just once a day using WiFi to publish data, its been going for months and the battery voltage is still well over 3.2 volts so it will probably last a year or two.
