Datasheet

Power Pins

The ESP8266 requires 3.3V power voltage and peaks at 500mA or so of current for small periods of time. You'll want

to assume the ESP8266 can draw up to 250mA so budget accordingly. To make it easier to power, we put a high-

current-capable 3.3V voltage regulator on the board. It can take 3.4-6V in but you should stick to 4-6V since the

ESP8288 has high current usage when WiFi is on.

There are two inputs for the regulator, V+ and VBat. Both have Schottky diodes so you can connect both at different

voltages and the regulator will simply power from the higher voltage. The V+ pin is also on the FTDI/serial header at

the bottom edge.

We recommend connecting your LiPoly or AA battery pack directly to VBat and then keeping V+ unused for when an

FTDI cable is attached. You can also use the extra V+ pin for getting the 5V USB power from the FTDI connector for

servos, NeoPixels, etc!

There's also a 3.3V output from the regulator available on the 3V pin