The ESP8266 ESP-01 module is a Wi-Fi module that allows microcontrollers (like Arduino) to access a Wi-Fi network. The ESP8266 WiFi Module is a self contained SOC with integrated TCP/IP protocol stack that can give any microcontroller access to your WiFi network. The ESP8266 is capable of either hosting an application or offloading all Wi-Fi networking functions from another application processor.
This module has a powerful enough on-board processing and storage capability that allows it to be integrated with the sensors and other application specific devices through its GPIOs with minimal development up-front and minimal loading during runtime. Its high degree of on-chip integration allows for minimal external circuitry, including the front-end module, is designed to occupy minimal PCB area. This makes the ESP8266 very versatile, and it can save you on cost and space in your projects.
- The ESP8266 Module is not capable of 5-3V logic shifting and will require an external Logic Level Converter. Please do not power it directly from your 5V dev board.
- This new version of the ESP8266 WiFi Module has increased the flash disk size from 512k to 1MB.
- 802.11 b/g/n
- Wi-Fi Direct (P2P), soft-AP
- Integrated TCP/IP protocol stack
- Integrated TR switch, balun, LNA, power amplifier and matching network
- Integrated PLLs, regulators, DCXO and power management units
- +19.5dBm output power in 802.11b mode
- Power down leakage current of <10uA
- 1MB Flash Memory
- Integrated low power 32-bit CPU could be used as application processor
- SDIO 1.1 / 2.0, SPI, UART
- STBC, 1×1 MIMO, 2×1 MIMO
- A-MPDU & A-MSDU aggregation & 0.4ms guard interval
- Wake up and transmit packets in < 2ms
- Standby power consumption of < 1.0mW (DTIM3)
The module has a 2 x 4 Header on the assembly. See pic for layout as the boards may not have the pins labeled.
- GND = Ground. Connect to ground on MCU
- GPIO2 = General Purpose Digital I/O
- GPIO0 = General Purpose Digital I/O
- RX = Receive Data. Connects to RX on MCU
- TX = Transmit Data. Connects to TX on MCU
- CH_PD = Enable / Power Down. Must be pulled to 3.3V directly or via pull-up resistor to enable
- RST = Reset. Active low, must be pulled to 3.3V directly or via pull-up resistor
- VCC = 3.3V. Can draw up to 200mA worse case.
1x WIFI module ESP-01, ESP8266
Note: Product Images are shown for illustrative purposes only and may differ from the actual products.