Grove – Uart Wifi

Grove - UART WiFi is a serial transceiver module featuring the ubiquitous ESP8266 IoT SoC. With integrated TCP/IP protocol stack, this module lets your microcontroller interact with WiFi networks with only a few lines of code. Each ESP8266 module comes pre-programmed with an AT command set firmware, meaning you can send simple text commands to control the device. The SoC features integrated WEP, WPA/WPA2, TKIP, AES, and WAPI engines, can act as an access point with DHCP, can join existing WiFi networks and has configurable MAC and IP addresses.

Features

• Grove 4-pin connector (RX,TX,VCC,GND)

• 802.11 b/g/n protocol (2.4GHz)

• WiFi Direct (P2P), soft-AP

• Supports three modes: AP, STA and AP+STA coexistence mode

• Integrated TCP/IP protocol stack

• LwIP (lightweight IP)

• Integrated low power 32-bit CPU could be reprogrammed as an application processor

• Integrated temperature sensor

• Serial UART Interface

• Multi-queue QoS management

• Wake up and transmit packets in < 2ms

• Metal shielding

• Onboard ceramic antenna

• Reset switch

Specification

• Input voltage: 3V / 5V

• Baud Rate: 115200

• Based on ESP8266 ESP-07 SoC

• AT Firmware: esp_iot_sdk_v1.1.0 + Seeed modifications:

• 2x additional AT commands to control blue Link LED.

• Register red WiFi LED to the ESP8266 wifi state LED.

• AT command set

• SDIO 1.1/2.0, SPI, UART

• Five power states: OFF, DEEP_SLEEP, SLEEP, WAKEUP and ON.

• Standby power consumption of < 1.0mW (DTIM=3)

• 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

• Hardware accelerators for CCMP (CBC-MAC, counter mode), TKIP (MIC, RC4), WAPI (SMS4), WEP (RC4), CRC

• WPA/WPA2 PSK, and WPS driver

• A-MPDU & A-MSDU aggregation & 0.4ms guard interval

• Dimensions: 25.43mm x 20.35mm

Technical Details

Part List

Documents

• Espressif Systems ESP8266 AT Instruction Set - v0.24
• http://www.esp8266.com
• Espressif Systems ESP8266
• ESP-06
• Schematic in Eagle
• Schematic in PDF
• ESP8266 on Hackaday
• https://nurdspace.nl/ESP8266