ESP8266 WiFi Module - ESP-01

This small module with an ESP8266 connects projects to the internet via WiFi. It is compatible with the Arduino IDE and can be programmed with Arduino or controlled via the serial interface with AT commands. A programming adapter is required for programming.

Caution: the ESP8266 works at 3.3 V level; 5 V on a pin destroys the module. A logic level converter is always required on a 5 V board.

Recommended Accessories:

• ESP-01 CH340G Programmer
• Logic Level Converter 2-Channel 5V / 3.3V
• ESP-01 PCB Adapter
• Micro Voltage Regulator Linear AMS1117 800mA 3.3V

Features:

• No voltage regulator and no USB converter on the module: supply with 3.3 V from a sufficiently strong source
• GPIO0 on GND at startup puts the module into programming mode
• CH_PD must be at 3.3 V for operation
• Integrated antenna, WiFi as client or access point

Application Examples:

• WiFi for an Arduino via the serial interface
• Small IoT switches and sensors with few pins
• Control boards for LEDs and relays

Documentation:

• Getting started with the ESP8266 (Random Nerd Tutorials)
• Programming the ESP-01 (Renzo Mischianti)
• Installing the ESP8266 in the Arduino IDE (Arduino ESP8266 Core)
• ESP8266EX datasheet (Espressif, PDF)

Technical Data:

• Type: ESP-01 with ESP8266 from Espressif
• Operating voltage: 3.3 V (3.0 to 3.6 V)
• Pins: TX, CH_PD, RST, VCC, GND, GPIO2, GPIO0, RX
• GPIO: 2, plus TX and RX
• Current per pin: 12 mA at most
• WiFi: 802.11 b/g/n, Wi-Fi Direct (P2P), soft-AP
• Integrated TCP/IP stack, 32-bit RISC processor
• Output power: +19.5 dBm in 802.11b mode
• Deep sleep: 20 µA (chip)
• Standby: < 1.0 mA
• Wake-up time: < 2 ms
• Flash: 1 MB
• Control via UART at 115200 baud and AT commands possible
• Size: 14.5 × 24.8 mm
• Weight: 2 g

Scope of Delivery:

• 1× ESP8266 WiFi Module - ESP-01