Oct 22^nd 2017 · 1 min read · #arduino #electronics #esp8266 #hardware #nodemcu #soldering

Steady Hands

a PCB seen at very high magnification. There is a copper patch soldered across. — Visual inspection of some soldering I did on an ESP-01
Shunting XPD_DCDC and RST lets me put the ESP8266 into "deep sleep", lowering idle consumption to microamperes.

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The Smallest Azure IoT Hub Client Ever • Nov 5^th 2017