The program structure corresponds to that of a regular microcontroller as known from the Arduino. The example project now lets the blue LED on the ESP8266 module blink.Īttention: This setup was unique for the first time usage and does not need to be repeated again! Connecting WeMos D1 to the Internet Now you can select an example project under File > Examples > 01.Basics > Blink and with a click on Upload the whole thing works. Now select in Tools > Board > ESP8266 Boards > LOLIN (WEMOS D1 R2 &mini): Then search for ESP8266 in Tools > Board > Board Manager and install the latest version: Insert the following link in Preferences > Board Manager: To be able to select the D1 the board manager for the ESP8266 must be added. The name of the selected board appears in the lower right corner of the IDE: The reason for this error is that the wrong board was selected. If you now select the appropriate COM port and upload an example sketch to the D1 you will probably get the following error message: “An error occurred while uploading the sketch avrdude: stk500_getsync() attempt 1 of 10: not in sync: resp=0x2e”. If the D1 is not recognized here, this is probably due to a missing driver. Select the appropriate COM port of the D1 under Tools > Port. Open the Arduino IDE and connect the D1 to the computer. In contrast to the Arduino, the D1 has the much more common Micro USB standard. Last but not least, the USB connector is also different. Please note: The designation of the D1 digital pins is also different from those of the Arduino and therefore must be adjusted in software. However, the digital pins of the D1 have more useful additional functions. The Arduino has 20 digital pins and the D1 only 16 digital pins. In addition, it should be noted that the D1, unlike the Arduino, has only one analog pin and additionally the number of digital pins is different. ![]() ![]() It is recommended to check the compatibility first! Because of the voltage differences on the pins you should not blindly plug an Arduino Shield on a D1. However, there is also a 5V output on the D1. On an Arduino UNO the voltage of the pins is 5V and on the D1 it is 3.3V. The pins of the D1 are arranged similarly to an Arduino UNO, but differ in the operating voltage. The Arduino has an 8 bit Atmel processor and the D1 a Wi-Fi capable ESP8266 processor with 32 bit clock frequency. However, you should note that the clock frequencies of the two processors are different. ![]() Roughly speaking, the D1 is a wifi-enabled Arduino! This gives you the possibility to connect the D1 to the internet. The main difference is that the D1 has an ESP2866 WIFI module integrated on its board. Example program to switch the OnBoard LED on and offĭifferences between the WeMos D1 R2 and the Arduino UNO R3Īn Arduino UNO R3 looks very similar to the WeMos D1.Differences between the WeMos D1 R2 and the Arduino UNO R3.Due to the several interfaces sensor data can be read in an get displayed via different ways (I2C, RS232, USB, WIFI/WLAN). The Arduino UNO R3 compatible development board is designed for a large variety of possible applications. The development board can be programmed using the Arduino IDE. In addition to that the popular ESP8266 Wifi/Wlan module was integrated. The Atmel Atmega328 basied and Arduino UNO compatible development board convinces with the small dimension whilst having a very powerful microcontroller with a large variety of interfaces for communication between the board and senosrs with low power consumption. Arduino compatible Development board / Programmable with Arduino IDE
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