Esp8266 with esp01 adapter

Using Arduino Networking, Protocols, and Devices
1

I have an esp8266 that came with an adapter that says esp01 adapter on it. I got the module working without the adapter. The adapter has Vcc, tx, Rex, and gnd pins. Does anyone know what the purpose of the adapter is?

2

Well it could be this or that or even an Aircraft Carrier is as good as a guess as any. Post an image of the adapter, please.

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4

It's used for programing the module.

5

you can't program esp-01 with that adapter. it only adapts powering and logic levels and has boot config pull-up/down to run the esp-01, not for flashing. it is meant for use with esp-01 with AT firmware with 5 V Arduino

6

Thanks, that’s good to know. Any advantage to running it at 5 volts?

7

The on board voltage regulator takes a burden off the Arduino by supplying 3.3V to the ESP

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