Enable Deep Sleep in ESP-01
How to hack ESP-01 module to enable deep sleep
TD;LR Connect XPD_DCDC to RESET.
Detail reading ESP-01 and ESP0-01s are both miniature and cheap IOT modules which has a full TCP layer powered by ESP8266 chip with inbuilt Wifi. Without a doubt this chip consumes alot of power. Unless you got plenty of spare batteries to change at least twice a day, with this chip it’s nearlly impossible to make a module which can be powered by batteries.
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