ESP8266 is a highly integrated chip designed for the needs of a new connected world. It offers a complete and self-contained Wi-Fi networking solution, allowing it to either host the application or to offload all Wi-Fi networking functions from another application processor.
Specifications:
Serial/UART baud rate: 115200 bps
Input power: 3.3V
I/O voltage tolerance: 3.6V Max
Flash Memory Size: 1MB (8Mbit)
WiFi security modes: WPA, WPA2
Package Including
4 * ESP8266 Wifi Transceiver Module
Version II—How to use??
Version II(All IO serial port version)
Note:The power supply will have to be 3.3v!!
about this version II,if you wish to enter into AT command by FLASH boot,just need connect CH-PD pin with VCC pin or pull up resistor to keep high-level.(Now and again without pulling up the resistor,there is not any data on the serial port)
The other three pins don’t want to connect anything,if you connect them with VCC pin and failed restart,you shouldn’t connect them.When GPIO0 is high-level,it means FLASH booting.
When GPIO0 is low-level,it means upgrading the system.At this moment,you’ll be able to upgrade the internal firmware by serial port. And RST(GPIO16)can be utilized to reset the external hardware.
P.S.Different test systems may use different connecting ways,so you want choose the best connecting ways by yourself.
Hereby we recommend one connecting way to connect esp01 module with serial port TTL tools.:After welding a 4.7k resistance between CH-PD pin and VCC pin. it needs connect UTXD,GND,VCC and URXD pin with USB-TTL(TXD and RXD need keep cross-linking)to test.
Make sure this fits by entering your model number.
Note: The item only supports 3.3V, please don’t use 5V!
Model: Esp-01.Compatible with Arduino. Give a boost to 3 modes: AP, STA, AP + STA
ESP8266 is a WiFi enabled Microcontroller – Arduino ready
Up to date version ESP-01,with stronger signal
Complete and self-contained Wi-Fi networking solution
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