WeMos ESP8266 D1 R2 WiFi Development Board

ESP8266 D1 R1 WiFi Processor with Uno Footprint The ESP8266 D1 R1 WiFi board utilizes the ESP8266 WiFi enabled processor, and puts it onto an Arduino Uno board footprint. It provides a way to work with the ESP8266 in a familiar setup and does not require a breadboard in order to make interconnections since it has the typical on-board female headers. It will also work with some Uno shields that have compatible I/O pin-outs. KEY FEATURES OF ESP8266 D1 R1: Microcontroller: ESP-8266 32-bit Clock Speed: 80MHz and up to 160MHz USB Converter: iFT232-S16 Operating Voltage: 3.3V Flash Memory: 4MB Digital I/O: 11 Analog Inputs: 1 Communications: I2C, Serial, SPI WiFi: Built-in Besides adding WiFi capability, the main claim to fame for the ESP8266 processor over the AVR processor of the standard Arduino is that it has a larger 4MB of Flash memory and runs at clock speeds of 80MHz and can sometimes optionally be overclocked to 160MHz and has a very fast processing speed. The Digital I/O except for D0 all support PWM and interrupts. In addition they can be configured to have pull-up or pull-down resistors On the down-side, it has only 1 analog input which is probably the most significant limitation. That can always be overcome by using an external Analog Mux module like our 16-channel 74HC4067, ADS1115 4-Channel 16-bit ADC or the MCP3008-I/P 8 channel A/D converter IC below if more analog I/O is desired. Per spec, the digital I/O is limited to 3.3V, but the ESP-8266 mfr has made statements that the digital pins are in fact 5V tolerant and there are many installations using the module directly connected to the logic lines of 5V peripherals. Note that when programming the board, you need to refer to the I/O using both the letter and number. With Arduino, output D3 would be referred to simply as ‘3’, but with the D1 board, you need to refer to the pin as ‘D3’. The board can be powered via the USB port or using an external 7-12V power supply via the DC Power Jack. The board runs at 3.3V, so keep that in mind when working with I/O. TECHNICAL SPECIFICATIONS Microcontroller ESP8266 32-bit Serial to USB Converter iFT232-S16 Operating Voltage 3.3V Input Voltage (recommended) 7-12V Digital I/O Pins 11 PWM I/O Pins (Shared with Digital I/O) 10 Analog Input Pins 1 (10-bit) DC Current per I/O Pin 12mA (Max) Hardware Serial Ports 1 Flash Memory 4 MBytes Instruction RAM 64 KBytes Data RAM 96 KBytes Clock Speed 80MHz Network IEEE 802.11 b/g/n WiFi Built-in LED Attached to digital pin 13 USB Connector Style Micro-B Female Board Dimensions (PCB) 69 x 53mm Pin Out Pin Function ESP-8266 Pin TX TXD TXD RX RXD RXD A0 Analog input, max 3.3V input A0 D0 IO GPIO16 D1 IO, SCL GPIO5 D2 IO, SDA GPIO4 D3 IO,Pull-up GPIO0 D4 IO,pull-up, BUILTIN_LED GPIO2 D5 IO, SCK GPIO14 D6 IO, MISO GPIO12 D7 IO, MOSI GPIO13 D8 IO,pull-down, SS GPIO15 G Gound GND 5V 5V – 3V3 3.3V 3.3V RST Reset RST *All IO have interrupt/pwm/I2C/one-wire supported(except D0) Note: All IO is work at 3.3V. Useful links iFT232-S16 Datasheet

WeMos ESP8266 D1 R2 WiFi Development Board This is WeMos ESP8266 D1 R2 WiFi Development Board. The WeMos D1 is an ESP8266 WiFi based board that uses the Arduino layout with an operating voltage of 3.3V. the board is controlled by the ESP8266 chip (a 32-Bit processor) and has a larger flash memory compared to an Arduino Uno. It consists of 11 digital I/O pins and 1 analog (input) pin. the board can be connected using a Micro-B type USB cable. The D1 R2 is a WiFi capable ESP8266EX based development board in the form of the Arduino UNO board format. This board is compatible with the Arduino IDE and with NodeMCU . The D1 R2 also features an onboard switching power supply which allows you to power the board from a power supply up to 12V. Features : Based on the ESP-8266EX. Arduino Compatible, you can use it on Arduino IDE. NodeMcu Compatible Package Includes : 1 x WeMos ESP8266 D1 R2 WiFi Development Board For more information read the following article, Getting started with the WeMos D1 ESP8266 WiFi Board Programming the ESP8266 WeMos-D1R2 Using Arduino Software/IDE Item Type: Dev. Board, WiFi Module Based On: ESP8266 Based Flash Memory (MB): 4MB Digital I/O Pins 11 Operating Voltage (VDC) 3.3 Analog I/O Pins 1 Dimensions (L x W x H) mm 68x54x12 Weight (g): 20 Shipping Weight 0.022 kg Shipping Dimensions 6 × 6 × 2 cm ESP8266EX Datashee: DOWNLOAD ESP8266 Technical Reference: DOWNLOAD ESP8266 AT Command Examples: DOWNLOAD ESP8266 AT Instruction Set: DOWNLOAD

Product Description The WeMos is a ESP8266 WiFi based board that uses the Arduino layout with operating voltage of 3.3V. Note that this is NOT an Arduino board, it only uses the Arduino Uno layout for the board design! In summary, the board is controlled by the ESP8266 chip (a 32-Bit processor) and has a larger flash memory compared to an Arduino Uno. It consists of 11 digital I/O pins and 1 analogue (input) pin. The board can be connected using a Micro-B type USB cable. Package Includes: 1x WeMos D1 WiFi UNO Based ESP8266 Relate Products: Sensors | Modules