I connected it to the power bank that I use to charge my phone. The blue LED on the ESP8266-12 module starts blinking.ĭisconnect the WeMos-D1R2 from your computer and connect an external 5V power source.

Compile and upload as instructed in the previous step. Replace all instances of pin 13 with pin 2 and save sketch. Replace all instances of pin 13 with pin 14 and save the sketch as WeMosBlink. On the WeMos-D1R2 the on board LED is connected to pin 14. The reason nothing happens is because the on board LED on the UNO is connected to pin 13.

To find it go to File | Examples | 01.Basics | Blink. In some cases I have copied and pasted the complete steps. You will find several similarities between this Instructable and my previous one - Programming the ESP8266-12E using Arduino software/IDE because of the fact that the ESP8266-12 is the foundation of the WeMos-D1R2 board. There are several older model WeMos-D1 being sold as WeMos-D1R2 to unsuspecting customers by several other vendors. The quality of the product is good and has a short delivery time, about two weeks to the US. I bought my WeMos-D1R2 from Banggood, I believe it is a Hong Kong based online retailer. You have to make sure you have the current version of the board WeMos-D1R2. If you are not careful you will end up with a D1 Board which is an older version.

There are two WeMos boards in the market. Apparently several shields, sensors and output devices that are manufactured for the Arduino platform will work on the WeMos-D1R2 with the added advantage of builtin WiFi. That means the board looks and works (in most cases) like an UNO. WeMos-D1R2 is an ESP8266-12 based WiFi enabled microprocessor unit on a Arduino-UNO footprint. In this Instructable I will guide you through the steps needed to install, configure and program the WeMos-D1R2 board using the Arduino IDE.

Wemos module library for proteus 8