Description
ESP8266 Serial WIFI Module Egypt
Product Description
This is a wifi solution based on IC ESP8266 from Espressif, very price competitive wifi module, and also great function. Bring your project to the internet of things easily!
Features:
- Very competitive price
- AP, STA, AP+STA modes available.
- Very simple AT commands, easy to use.
- internal LWIP interface.
- Only four pins interface, VCC-3V3, GND, TXD and RXD.
- Current firmware V091 for all stock, new reserved reset and CH_PD (for updating) pins available, you can refresh the firmware now.
- All using new ESP8266ex new chip, old chip is not available anymore.
- visit this wiki for more info about specs and usages
Module Pin Description
- Normal mode: Normal boot from flash, normal working mode
- Flash mode: Firmware flash mode
| Pin |
Working Mode |
Flash Mode |
Description |
| VCC, GND* |
|
|
power supply, better use a standalone, and share ground with uart port |
| TXD, RXD** |
|
|
uart interface |
| RST |
|
|
Restart on low TTL |
| CH_PD |
High TTL |
High TTL |
Chip select, constant High TTL for both mode |
| GPIO0 |
High TTL(optionally) |
Low TTL |
Switch Wroking/Flash Mode |
| GPIO 15 |
Low TTL |
Low TTL |
Constant Low TTL for both mode , N/A for ESP-01 |
| GPIO 2 |
High TTL |
High TTL |
Constant High TTL for both mode, maybe not necessary |
| Red LEDs |
|
|
constants on to show the power status |
| Blue LEDs |
|
|
blink when data come through |
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