Ai Thinker ESP-01M WiFi Module

Add compact, reliable WiFi connectivity to your IoT projects with the Ai Thinker ESP-01M - an ultra-small ESP8285-based module with onboard 1MB flash, integrated antenna, and full TCP/IP stack. Available at The Engineer Store, Bengaluru, with fast shipping, 7-day warranty on manufacturing defects, and dedicated technical support.

Specifications

Key Features

• Ultra-compact form factor: At just 18x20mm with castellated edge pads, the ESP-01M is one of the smallest WiFi modules available - ideal for space-constrained designs and direct PCB soldering
• Integrated ESP8285 SoC: Combines the proven ESP8266 core with built-in 1MB flash, eliminating the need for an external flash chip and reducing BOM cost
• Full WiFi connectivity: Supports 802.11 b/g/n with Station, SoftAP, and Station+SoftAP modes for flexible network configurations
• Multiple GPIO access: Exposes up to 8 GPIOs supporting UART, SPI, I2C, PWM, and a 10-bit ADC channel for versatile peripheral interfacing
• Low power modes: Deep sleep current as low as ~20uA, making it suitable for battery-powered and energy-harvesting IoT applications
• Broad firmware ecosystem: Program with Arduino IDE, MicroPython, NodeMCU Lua, or use built-in AT command firmware for UART-based control from any microcontroller
• Onboard PCB antenna: No external antenna required - simplifies design and keeps the total footprint minimal
• Industrial temperature range: Rated for -20 degreesC to +85 degreesC, suitable for embedded products deployed in demanding environments

Why Choose the ESP-01M?

• Smaller than ESP-01/ESP-01S: The castellated pad design and integrated flash make it significantly more compact, perfect for embedding directly onto custom PCBs
• 100% authentic Ai Thinker: Sourced from authorized distributors - guaranteed genuine modules with consistent RF performance
• Production-ready: Castellated pads enable automated pick-and-place assembly, bridging the gap between prototyping and mass production
• 1-5 day shipping, 7-8 day delivery: Ships from our Bengaluru warehouse to most locations across India; same-day delivery available in Bengaluru
• Expert technical support: Our engineering team helps with schematic integration, firmware flashing, and troubleshooting

Project Ideas

• Smart Home Sensors: Build WiFi-connected temperature, humidity, or motion sensors that report data to Home Assistant, Blynk, or custom dashboards
• IoT Data Loggers: Collect analog sensor readings via the onboard ADC and push data to ThingSpeak, MQTT brokers, or cloud databases over WiFi
• WiFi-Controlled Relays: Create smart switches and outlet controllers with a web server running directly on the ESP-01M - no separate microcontroller needed
• Wireless UART Bridge: Use AT command firmware to add transparent WiFi-to-serial communication to existing Arduino, STM32, or PIC-based designs
• Wearable & Portable Devices: The ultra-small size and low deep-sleep current make it viable for battery-powered wearables and portable monitoring gadgets
• OTA

Frequently Asked Questions

Buy Ai Thinker ESP-01M WiFi Module Online in India

Purchase the Ai Thinker ESP-01M WiFi Module online at The Engineer Store - India's most trusted electronics components store. We deliver across all major cities including Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat. Get the best price on Ai Thinker ESP-01M WiFi Module with fast 1-5 day shipping from our Bengaluru warehouse. All products are 100% authentic, sourced from authorized distributors with 7-day warranty on manufacturing defects.

Looking to buy Ai Thinker ESP-01M WiFi Module at the best price in India? The Engineer Store offers competitive pricing, bulk discounts for orders of 10+ units, and dedicated technical support via email and WhatsApp. Whether you are a hobbyist, student, or professional engineer, we have everything you need for your electronics projects.