ESP-12F connected to three AA nimh cells. The voltage is a bit high, but it doesn’t seem to be lethal to the little esp. Temperature has been around 0C the entire time, getting colder tonight.

ESP-12F connected to three AA nimh cells. The voltage is a bit high, but it doesn’t seem to be lethal to the little esp. Temperature has been around 0C the entire time, getting colder tonight.