Wemos D1 R1 WiFi ESP8266 Development Board
The Wemos D1 R1 WiFi ESP8266 Development Board is a versatile microcontroller board designed in the footprint of the Arduino UNO, yet powered by the highly capable ESP8266EX WiFi SoC. It allows developers and hobbyists to create powerful IoT and smart automation projects using Arduino IDE, without needing a separate WiFi shield.
This board integrates a CH340 USB-to-Serial chip for easy programming via a micro USB cable and comes with onboard power regulation to support 3.3V logic. Featuring multiple GPIO pins, PWM, I2C, SPI, and UART interfaces, it’s a perfect tool for prototyping wireless applications.
🔍 Key Technical Specifications:
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Microcontroller: ESP8266EX
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Operating Voltage: 3.3V (logic), 5V (via USB)
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Input Voltage: 7–12V (via Vin)
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USB Chipset: CH340
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Flash Memory: 4MB
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GPIO Pins: 11 digital I/O, 1 analog input
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Interfaces: I2C, SPI, UART, PWM
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WiFi: 802.11 b/g/n
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Dimensions: UNO compatible layout
⚠️ Precautions:
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Avoid supplying 5V directly to GPIO pins (ESP8266 is 3.3V logic).
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Always use level shifters when interfacing with 5V sensors.
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Ensure proper cooling when using in continuous load scenarios.
🎯 Applications:
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Home automation with WiFi connectivity
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IoT-based sensor networks
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Remote data logging and monitoring
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Smart farming and environmental sensing
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Educational electronics and STEM learning
🔗 Helpful Links & Related Products:
ESP8266 WiFi Modules
Arduino Boards
Microcontroller Accessories
Modules
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