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D1 R2 WiFi ESP8266 Development Board Compatible forUNO Program By IDE

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The D1 R2 is a mini wifi board based on ESP-8266EX.

11 digital input/output pins, all pins have interrupt/pwm/I2C/one-wire supported(except D0)
1 analog input(3.3V max input)
A Micro USB connection
A power jack, 9-24V power input.
Compatible with
Compatible with nodemcu

Technical specs:
MicrocontrollerESP-8266EX
Operating Voltage3.3V
Digital I/O Pins11
Analog Input Pins1
Clock Speed80MHz/160MHz
FLash4M bytes
Length68.6mm
Width53.4mm
Weight25g
PinFunctionESP-8266 Pin
TXTXDTXD
RXRXDRXD
A0Analog input, max 3.3V inputA0
D0IOGPIO16
D1IO, SCLGPIO5
D2IO, SDAGPIO4
D3IO,Pull-upGPIO0
D4IO,pull-up, BUILTIN_LEDGPIO2
D5IO, SCKGPIO14
D6IO, MISOGPIO12
D7IO,MOSlGPIO13
D8IO,pull-down, SSGPIO15
GGoundGND
5V5V-
3V33.3V3.3V
RSTResetRST
*All IO have interrupt/pwm/I2C/one-wire supported(except D0)
Programming:

The D1 R2 has a micro USB for auto programming.
Also you can programming it using OTA
Warnings: All IO is work at 3.3V.

Package included:
1 x D1 R2 WiFi ESP8266 Development Board


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D1 R2 WiFi ESP8266 Development Board Compatible forUNO Program By IDE

D1 R2 WiFi ESP8266 Development Board Compatible forUNO Program By IDE

D1 R2 WiFi ESP8266 Development Board Compatible forUNO Program By IDE

D1 R2 WiFi ESP8266 Development Board Compatible forUNO Program By IDE

D1 R2 WiFi ESP8266 Development Board Compatible forUNO Program By IDE

D1 R2 WiFi ESP8266 Development Board Compatible forUNO Program By IDE

D1 R2 WiFi ESP8266 Development Board Compatible forUNO Program By IDE

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  • 06/12/2015

    I am delighted with this little board, it is well made and very fast. Hardware wise a very high quality product.

    There is one caveat if you are using this with arduino you must install downlevel Arduino 1.6.5 ide as the Wemos libraries are not yet supporting the 1.6.6 ide. If you try to use this ide your code will refuse to compile with warnings like "Warning: platform.txt from core 'WeMos LGT Boards' contains deprecated tools.avrdude.cmd.path="

    Please keep in mind, the deprecated code will only stop you from developing with the latest IDE, it works very well with the last version! I feel certain that the Wemos developers will soon fix the library.

    Overall I think this is a valuable product for those that wish to go beyond the capabilities of a standard Arduino and considering the fact that it has built in WiFi one should conclude that this board is a bargain.


    See request at "http://webcache.googleusercontent.com/search?q=cache:zKBDmcwzwEsJ:https://github.com/wemos/WeMos_Boards/issues/4+&cd=1&hl=en&ct=clnk&gl=uk"

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  • 25/12/2015

    After configuring my IDE and downloading the relevant examples (takes about 15 mins to do this) I then had great success and managed to create a simple HTTP Web Server (see photo).

    Only restriction is one analogue input pin available so only one sensor can be connected. Perhaps I2C can get round this limitation (not yet tried).

    Also, all pins are 3.3v so watch out for 5v external boards which will damage this one without reducing that (easy to do with level converters or even a voltage divider with two resistors).

    I also connected this to a NTP (Timer Server) so no need to connect to a DS3231 RTC (Real Time Clock) module; time always up to date!

    Worth buying one just to experiment with and seeing what can be done once the wires are gone and you have wifi freedom.

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    • 0
      Q: Is the VIN pin supposed to receive 5V or 3.3V? Thanks
      A:
      The Vin pin should receive between 7 and 12 volts. It goes to a voltage regulator on board which cre Pleasure Catching Up With You.
      Answered by BG351738321 on 08/02/2022Helpful (0)
    • 0
      Q: what is the range this product. How much long it can transmit or receives signals.
      A:
      The best board
      Answered by Tonycv on 17/05/2023Helpful (0)
    • 0
      Q: is keyboard.h library available in this version?
      A:
      I do not see any info for keyboard.h library compiling on the D1 R2.
      Answered by georget on 20/11/2020Helpful (0)
    • 0
      Q: Where can I find the card's installation drives?
      A:
      *****
      Answered by Enchantedwas on 26/02/2020Helpful (0)
    • 0
      Q: What is plug in compatible display shield for IDE Geekcreit D1 R2 WiFi ESP8266
      A:
      Most LCD screens are compatible, just search with the keywords.
      Answered by CarpolQuirky on 20/02/2020Helpful (0)

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